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International Space Flight (ESA, Russia, China and others) => Indian Launchers => Topic started by: antriksh on 10/21/2012 11:01 pm

Title: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (1048UTC)
Post by: antriksh on 10/21/2012 11:01 pm
GSLV D5 is getting ready inside GSLV vehicle assembly facility at Sriharikota
(Source: ISRO Facebook)

For second - successful - launch attempt coverage, start here:
http://forum.nasaspaceflight.com/index.php?topic=30160.180 (http://forum.nasaspaceflight.com/index.php?topic=30160.180)
Title: Re: GSLV D5 (MkII) GSAT-14 February 2013
Post by: input~2 on 10/23/2012 02:52 pm
According to ISRO Chairman two crucial tests have still to be completed on the cryogenic stage:
  • testing in vacuum
  • endurance of the fuel booster turbo pump
    (source (http://www.thehindu.com/opinion/op-ed/looking-spaceward-feet-firmly-on-the-ground/article4023186.ece))
  • Title: Re: GSLV D5 (MkII) GSAT-14, February 2013
    Post by: Liryc on 12/04/2012 03:43 pm
    let's hope everything goes smoothly this time !

    By the way.. I was looking at a previous GSLV launch video (see at the end) and I realized they ignite the boosters 4sec before the S139 main stage.

    How do they prevent the launcher from moving, tilting or lifting-off during this phase ?

    With the mass of the launcher (402 t) and the thrust of the 4 Vikas (209t) (source wikipedia) they must have some sort of hold down mechanism or pyro bolts ?


    http://www.youtube.com/watch?v=KYirFgCd8RU
    Title: Re: GSLV D5 (MkII) GSAT-14, February 2013
    Post by: antriksh on 12/06/2012 11:46 pm
    GSLV's next launch in April: Veeraraghavan

    "Most tests have been completed except for the high altitude test, which validates the mission of our cryogenic engine. We hope to complete this and launch the GSLV mission by April 2013," Veeraraghavan said

    http://timesofindia.indiatimes.com/city/pune/GSLVs-next-launch-in-April-Veeraraghavan/articleshow/17513768.cms
    Title: Re: GSLV D5 (MkII) GSAT-14, 2013-H2
    Post by: input~2 on 03/24/2013 09:58 am
    According to ISRO annual report 2012-2013, launch is now planned for 2013-H2 (as per the planned launch date of GSAT-14)
    Title: Re: GSLV D5 (MkII) GSAT-14, 2013-H2
    Post by: input~2 on 03/26/2013 09:16 am
    Quote from:  ISRO annual report 2012-13
    The forthcoming GSLV-D5 vehicle carrying 2018 kg GSAT-14 will have
    the configuration (4 L40H+S139) + L37.5H + CUS-12 + 3.4 m diameter payload fairing
    Title: Re: GSLV D5 (MkII) GSAT-14, 2013-H2
    Post by: hornbill2007 on 03/28/2013 06:43 pm
    http://www.thehindu.com/sci-tech/science/successful-ignition-of-indigenous-cryogenic-engine/article4559154.ece (http://www.thehindu.com/sci-tech/science/successful-ignition-of-indigenous-cryogenic-engine/article4559154.ece)
    Successful ignition of indigenous cryogenic engine
    Title: Re: GSLV D5 (MkII) GSAT-14, July 15-31, 2013
    Post by: sanman on 04/24/2013 10:33 pm
    High Altitude Test of the cryogenic engine has been successful, and GSLV-D5 looks to be on track for launch in July:

    http://timesofindia.indiatimes.com/city/thiruvananthapuram/High-altitude-test-of-cryogenic-engine-successful-ISRO-to-launch-GSLV-D5-in-July/articleshow/19717697.cms
    Title: Re: GSLV D5 (MkII) GSAT-14, July 15-31, 2013
    Post by: sanman on 04/27/2013 11:12 pm
    GLSV will be moved to Sriharikota for July launch:

    http://www.thehindu.com/sci-tech/indigenous-gslv-to-be-moved-to-sriharikota-by-may-15/article4661053.ece
    Title: Re: GSLV D5 (MkII) GSAT-14, July 15-31, 2013
    Post by: input~2 on 04/28/2013 03:45 pm
    GLSV will be moved to Sriharikota for July launch:

    http://www.thehindu.com/sci-tech/indigenous-gslv-to-be-moved-to-sriharikota-by-may-15/article4661053.ece (http://www.thehindu.com/sci-tech/indigenous-gslv-to-be-moved-to-sriharikota-by-may-15/article4661053.ece)
    Well, this article hints at a launch date potentially drifting into August...
    (45 days are a minimum between 2 launches FLP/SLP)
    Title: Re: GSLV D5 (MkII) GSAT-14, end July or August, 2013
    Post by: Salo on 05/19/2013 08:50 pm
    GSLV D5 launch planned in July: Union Minister V Narayanasamy (http://www.dnaindia.com/scitech/1835683/report-gslv-d5-launch-planned-in-july-union-minister-v-narayanasamy)
    Title: Re: GSLV D5 (MkII) GSAT-14, August, 2013
    Post by: input~2 on 05/30/2013 06:28 am
    Since PSLV-C22 launch has been delayed to end June, GSLV D5 launch can't take place before August
    Title: Re: GSLV D5 (MkII) GSAT-14, August, 2013
    Post by: K210 on 05/30/2013 09:10 am
    Since PSLV-C22 launch has been delayed to end June, GSLV D5 launch can't take place before August

    can you provide a source to back up this claim? There are multiple reports on the web saying that PSLV C-22 will be launched as scheduled on June 12.
    Title: Re: GSLV D5 (MkII) GSAT-14, August, 2013
    Post by: input~2 on 05/30/2013 09:41 am
    Since PSLV-C22 launch has been delayed to end June, GSLV D5 launch can't take place before August

    can you provide a source to back up this claim? There are multiple reports on the web saying that PSLV C-22 will be launched as scheduled on June 12.
    Source (I hope you can read Telugu ;) ): http://www.andhrabhoomi.net/node/91579
    Title: Re: GSLV D5 (MkII) GSAT-14, August, 2013
    Post by: Star One on 05/30/2013 06:08 pm
    Since PSLV-C22 launch has been delayed to end June, GSLV D5 launch can't take place before August

    can you provide a source to back up this claim? There are multiple reports on the web saying that PSLV C-22 will be launched as scheduled on June 12.
    Source (I hope you can read Telugu ;) ): http://www.andhrabhoomi.net/node/91579

    This article from today is still saying the PSLV launch is set for June 12.

    http://www.pocketgpsworld.com/Indias-first-navigation-satellite-set-for-Jun-12-launch-8332.php
    Title: Re: GSLV D5 (MkII) GSAT-14, August, 2013
    Post by: input~2 on 05/31/2013 05:30 am
    See PSLV C22 thread (http://forum.nasaspaceflight.com/index.php?topic=30037.0) for more links pointing at a launch delay
    Title: Re: GSLV D5 (MkII) GSAT-14, August, 2013
    Post by: input~2 on 06/06/2013 11:50 am
    Confirmation of the launch delay from July to August by ISRO
    (source (http://zeenews.india.com/news/nation/june-rocket-launch-delay-not-to-affect-isro-plans_853263.html))
    Title: Re: GSLV D5 (MkII) GSAT-14, August, 2013
    Post by: antriksh on 06/12/2013 01:51 pm
    GSLV modifications for the D5 mission
    Title: Re: GSLV D5 (MkII) GSAT-14, August, 2013
    Post by: Salo on 06/13/2013 05:51 pm
    ISRO sources said preparations are on at the second launch pad at the spaceport of Sriharikota for the launch of GSLV-D5 (Geosynchronous Satellite Launch Vehicle-Development flight 5) in August.

    GSLV-D5 aerodynamic characterisation has been revisited following the back-to-back failure of GSLV flights - one with indigenous cryogenic engine and another with a Russian-made one in 2010.

    Force measurements, steady and unsteady pressure measurements and aero elastic tests have already been conducted using wind tunnel models at National Aerospace Laboratory, Bangalore and Glavkosmos, Russia.

    Computational fluid dynamics simulations have been carried out in-house for incremental effects on protrusion, overall aerodynamic load distribution and distribution on protrusions, according to ISRO.

    GSLV-D5 would carry GSAT-14 satellite with six extended C band and six Ku band transponders, envisaged to enhance communication transponder capacity.

    The satellite employs the standard 2,000 Kg class bus (I-2K) with a power handling capability of around 2.5 KW and a lift-off mass of 1,980 kg, the space agency added.

    http://www.business-standard.com/article/economy-policy/arianespace-to-launch-india-s-insat-3d-spacecraft-on-july-26-113061301104_1.html
    Title: Re: GSLV D5 (MkII) GSAT-14, August, 2013
    Post by: K210 on 06/15/2013 08:51 am
    Tentative launch window is between July 25th - August 10th. RLV-TD will fly from FLP in september. (http://www.defence.pk/forums/indian-defence/241849-rlv-airframe-under-construction.html (http://www.defence.pk/forums/indian-defence/241849-rlv-airframe-under-construction.html))
    Title: Re: GSLV D5 (MkII) GSAT-14, August, 2013
    Post by: antriksh on 06/15/2013 02:19 pm
    Tentative launch window is between July 25th - August 10th. RLV-TD will fly from FLP in september. (http://www.defence.pk/forums/indian-defence/241849-rlv-airframe-under-construction.html (http://www.defence.pk/forums/indian-defence/241849-rlv-airframe-under-construction.html))

    RLV-TD mission not possible before 1Q 2014
    Title: Re: GSLV D5 (MkII) GSAT-14, August 1-7, 2013
    Post by: input~2 on 06/26/2013 09:19 am
    An article in a Telugu newspaper points at a launch in the first week of August
    (source (http://www.andhrabhoomi.net/node/95456))
    Title: Re: GSLV D5 (MkII) GSAT-14, August 6, 2013
    Post by: input~2 on 07/01/2013 06:53 pm
    Tentative launch mentionned during the speeches by ISRO management after PSLV C22 successful launch was August 6
    Title: Re: GSLV D5 (MkII) GSAT-14, August 6, 2013
    Post by: input~2 on 07/02/2013 07:01 am
    ISRO’s GSLV Mk-2 Launcher Return to Flight Test in August (http://www.sawfnews.com/isros-gslv-mk-2-launcher-return-to-flight-test-in-august/)
    Title: Re: GSLV D5 (MkII) GSAT-14, August 6, 2013
    Post by: antriksh on 07/05/2013 03:07 am
    ISRO to mate cryogenic engine with its rocket on Friday

    http://www.dnaindia.com/scitech/1857086/report-isro-to-mate-cryogenic-engine-with-its-rocket-on-friday


    "The process of fixing our cryogenic engine with GSLV will begin tomorrow (Friday) afternoon. Then various tests will be carried out before the satellite is fixed with the rocket,"
    Title: Re: GSLV D5 (MkII) GSAT-14, August 6, 2013
    Post by: npuentes on 07/06/2013 02:22 am
    Note that GSAT-14 is actually the 13th GSAT, just as PSLV C-14 was really the the 13th: http://forum.nasaspaceflight.com/index.php?topic=1173.790.
    Too bad triskaidekaphobia has entered official circles, but maybe the psychology of enough people on the project is great enough to skip the designation "13" even if it is indeed the 13th.
    Title: Re: GSLV D5 (MkII) GSAT-14, August 7-11, 2013
    Post by: input~2 on 07/22/2013 10:12 am
    Launch planned in the second week of August (after August 6)
    (source (http://www.deccanherald.com/content/343608/isro-launch-gsat-4-august.html))
    Title: Re: GSLV D5 (MkII) GSAT-14, August 7-11, 2013
    Post by: chota on 07/23/2013 07:32 pm
    ISRO’s GSLV-D5 slated for August 19 launch

    http://zeenews.india.com/news/space/isros-gslv-d5-slated-for-august-19-launch_864162.html

    "“The moment we are talking about is August 19th, as a tentative schedule and the time is around 5 PM”
    Title: Re: GSLV D5 (MkII) GSAT-14, August 7-11, 2013
    Post by: chota on 07/24/2013 01:09 pm
    Is this protrusion odd in GSLV-D3?

    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (~1130UTC)
    Post by: K210 on 07/29/2013 10:18 am
    What is the mass of GSAT-14, some sites are saying it is 1980 kg while ISRO is saying it is 2050kg which is it?
    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (~1130UTC)
    Post by: sanman on 07/29/2013 09:44 pm
    Maybe that bulge in the picture is the missing 70 kg    ;)
    Title: Re: GSLV D5 (MkII) GSAT-14, August 7-11, 2013
    Post by: russianhalo117 on 07/30/2013 04:09 pm
    Is this protrusion odd in GSLV-D3?
    It looks like that it has a temporary protective cover. It also appears to be on the rockets umbilical side. So it is possibly an umbilical interface that has been covered.
    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (~1130UTC)
    Post by: antriksh on 08/02/2013 03:34 pm
    CUS-05!!
    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (~1130UTC)
    Post by: antriksh on 08/02/2013 03:42 pm
    GSAT-14!!
    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (~1130UTC)
    Post by: chota on 08/08/2013 01:09 pm
    The protrusion visible in CUS-05 image above.

    Meanwhile reconfirmation of launch date and time
    http://www.deccanherald.com/content/349848/space-agency-may-launch-gsat.html


    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (~1130UTC)
    Post by: antriksh on 08/08/2013 03:52 pm
    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (~1130UTC)
    Post by: antriksh on 08/08/2013 03:55 pm
    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (~1130UTC)
    Post by: Galactic Penguin SST on 08/09/2013 11:08 am
    http://www.isro.org/  (http://www.isro.org/) is giving the launch time as 16:50 local = 11:20 UTC.
    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: chota on 08/10/2013 06:25 am
    "The integration of the satellite with the launch vehicle has been completed. On August 11, we plan to move the vehicle to the launch pad"

    http://www.thehindu.com/sci-tech/indigenous-cryogenic-engine-to-power-gslvd5-on-aug-19/article5008029.ece?homepage=true
    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: input~2 on 08/10/2013 06:48 am
    A1615/13 -  GSLV-D5 ROCKET LAUNCH FM SHAR RANGE, SRIHARIKOTA WILL TAKE PLACE AS PER FLW DETAILS. THE LAUNCH WILL BE ON ANY ONE OF THE DAY DRG THIS PERIOD. ACTUAL DATE OF LAUNCH WILL BE INTIMATED 24HRS IN ADVANCE THROUGH A SEPARATE NOTAM. LAUNCH PAD COORD: 1343.2N08013.8E NO FLT IS PERMITTED OVER THE DNG ZONE.
    I. DNG ZONE-1 IS A CIRCLE OF 15NM RADIUS AROUND THE LAUNCHER
    II.DNG ZONE-2 IS A RECTANGULAR AREA BOUNDED BY:    1115N08510E   1115N 08655E    1245N 08655E   1245N 08510E III.DNG ZONE-3 IS A RECTANGULAR AREA BOUNDED BY:    1020N 08830E   1020N09030E     1150N 09030E   1150N 08830E
    IV.DNG ZONE-4 IS A RECTANGULAR AREA BOUNDED BY     0815N 09500E   0815N 09600E     0945N 09600E   0945N 09500E
     [...]
    DLY 1045-1345, 19 AUG 10:45 2013 UNTIL 05 SEP 13:45 2013. CREATED: 06 AUG 07:03 2013
    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: sanman on 08/11/2013 12:35 am
    Aug 19 launch date:

    http://www.thehindu.com/sci-tech/indigenous-cryogenic-engine-to-power-gslvd5-on-aug-19/article5008029.ece
    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: kanaka on 08/11/2013 06:23 am
    Aug 19 launch date:

    http://www.thehindu.com/sci-tech/indigenous-cryogenic-engine-to-power-gslvd5-on-aug-19/article5008029.ece

    A 72 Hour count down has already begun [info from unidentified source].
    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: seshagirib on 08/11/2013 08:41 am
    Aug 19 launch date:

    http://www.thehindu.com/sci-tech/indigenous-cryogenic-engine-to-power-gslvd5-on-aug-19/article5008029.ece

    A 72 Hour count down has already begun [info from unidentified source].

    Countdown even before vehicle rollolut from VAB to launch pad !! ? This is unlikely as the launch is still a week away.
    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: kanaka on 08/11/2013 01:44 pm
    Aug 19 launch date:

    http://www.thehindu.com/sci-tech/indigenous-cryogenic-engine-to-power-gslvd5-on-aug-19/article5008029.ece

    A 72 Hour count down has already begun [info from unidentified source].

    Countdown even before vehicle rollolut from VAB to launch pad !! ? This is unlikely as the launch is still a week away.


    Might be a mock drill count down
    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: antriksh on 08/14/2013 05:50 am
    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: antriksh on 08/14/2013 05:51 am
    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: antriksh on 08/14/2013 05:52 am
    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: antriksh on 08/14/2013 05:58 am
    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: antriksh on 08/14/2013 06:46 am
    Are they gonna use Acoustic suppression system in this launch??

    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: kanaka on 08/14/2013 08:25 am


    How magestically does it stand waiting to succeed? All eyes of the whole world is on that white vehicle standing with dignity on the launch pad.
    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: chota on 08/14/2013 01:24 pm
    Quote from: antriksh
    Are they gonna use Acoustic suppression system in this launch??

    Great photos!!

    "ASS is realized for servicing GSLV Mk-III launch where water from a new Overhead Tank is programmed to be injected onto the flumes of rocket exhaust during lift-off from T-2 seconds to T+13 seconds."
    Title: Countdown for launching GSLV-D5 to commence on August 18
    Post by: kanaka on 08/16/2013 06:05 am

    http://articles.economictimes.indiatimes.com/2013-08-14/news/41409909_1_anomalous-stopping-failure-analysis-committee-gslv-d5
    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (~1130UTC)
    Post by: chota on 08/16/2013 07:24 am
    What is the mass of GSAT-14, some sites are saying it is 1980 kg while ISRO is saying it is 2050kg which is it?

    1985 1982Kgs.
    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: antriksh on 08/16/2013 01:17 pm
    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: antriksh on 08/16/2013 01:25 pm
    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: antriksh on 08/16/2013 01:29 pm
    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: antriksh on 08/16/2013 01:38 pm
    Video Imaging system is installed on the the vehicle. Hope they telecast the video and not just use it internally.
    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: Satori on 08/16/2013 06:49 pm


    Brochure available in pdf format.
    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: sanman on 08/16/2013 09:19 pm
    Video Imaging system is installed on the the vehicle. Hope they telecast the video and not just use it internally.

    Gee, so hopefully this time we'll get to see some onboard footage from the rocket's perspective, as it takes off from the ground and ascends to orbit?

    That's certainly one thing I've been missing while watching ISRO launches, in comparison to NASA and SpaceX launches. Seeing onboard video showing the progress of the flight is a lot better than watching ISRO's typical boring plotgraphs. This is long overdue.
    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: K210 on 08/17/2013 06:51 am
    T-48 hours...the anxiety is starting to kick in. i really hope this launch is successful because if it isn't it will set back chnadraayan-2 and a potential mars follow on mission.
    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: antriksh on 08/17/2013 09:34 am
    The Coolest Hot Engine!!!!!


    http://www.youtube.com/watch?v=lbaOU6CNmSk&feature=youtu.be (http://www.youtube.com/watch?v=lbaOU6CNmSk&feature=youtu.be)

    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: antriksh on 08/17/2013 09:36 am
    GSLV D5 Integration


    http://www.youtube.com/watch?v=YpS8KhaVMB8 (http://www.youtube.com/watch?v=YpS8KhaVMB8)
    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: kanaka on 08/17/2013 02:49 pm
    A very serious security breach has happened. Without the knowledge of ISRO officials some one has secretly intruded into the ISRO premises and shot the videos using spy cams. What is the ISRO security department doing  ? Who is responsible for these serious security breach? Also how come the composition and working of Cryogenic has been made public? We strictly need explanation for these things.
    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: Silmfeanor on 08/17/2013 04:00 pm
    A very serious security breach has happened. Without the knowledge of ISRO officials some one has secretly intruded into the ISRO premises and shot the videos using spy cams. What is the ISRO security department doing  ? Who is responsible for these serious security breach? Also how come the composition and working of Cryogenic has been made public? We strictly need explanation for these things.

    Huh? why are these security breaches? they are very clearly made to broadcast and contain no special information that would be secret -anyone who reads a few wikipedia pages would have had the same information.
    Also, These videos are clearly made to be published. Stacking of stages is nothing special - you see that all the time. Look at some Ariane thread updates, they have lots of stacking videos.
    Cryogenic engine composition and working is also not very special - you can find the same information everywhere on the net. The real hard parts, such as turbopump impeller blades and specific metallurgic techniques are not in these videos...
    I can assure you that this is not a security breach, these are made by the PR department.
    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: baldusi on 08/17/2013 04:13 pm
    Technically, the coolest engine was the RD-0120, since it used subcooled H2 on the Energyia.  :P
    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: input~2 on 08/17/2013 07:22 pm
    Quote
    A1669/13 -  REF VOMM NOTAM A1615/13, WMKK NOTAM A1825/13 AND VCBI NOTAM A0395/13.  GSLV-D5 ROCKET LAUNCH FM SHAR RANGE, SRIHARIKOTA, INDIA IS SCHEDULED ON 19TH AUGUST 2013 BTN 1045-1345 UTC.  ATC MAY   RE-ROUTE TRAFFIC DURING THE PERIOD AS PER ROUTINGS GIVEN IN THE  ABOVE NOTAMS.  LAUNCH WINDOW FOR THE REMAINING PERIOD FROM 20TH AUGUST TO 5TH SEPT 2013 SHALL BE KEPT ALIVE FOR RESCHEDULING  OF LAUNCH IF REQUIRED. GND - UNL, 19 AUG 10:45 2013 UNTIL 19 AUG 13:45 2013. CREATED: 17 AUG 09:40 2013
    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: AJA on 08/17/2013 07:27 pm
    Video Imaging system is installed on the the vehicle. Hope they telecast the video and not just use it internally.

    Gee, so hopefully this time we'll get to see some onboard footage from the rocket's perspective, as it takes off from the ground and ascends to orbit?

    That's certainly one thing I've been missing while watching ISRO launches, in comparison to NASA and SpaceX launches. Seeing onboard video showing the progress of the flight is a lot better than watching ISRO's typical boring plotgraphs. This is long overdue.

    Well, you'll have to wait for a while longer because I don't think the video's going to come down in real time. I don't think they've got the RF hardware that can offer the bandwidth for real-time video. From the brochure:

    Quote
    S-band telemetry and C-band transponders enable GSLV-D5 performance monitoring, tracking, range safety / flight safety and Preliminary Orbit Determination (POD).

    From shuttle and ISS coverage, I'm guessing that they need a Ku pipeline to be able to stream video. GSAT-14 has the Ku hardware, but even if they did have some kind of power/data-connection from the vehicle to the satellite, you'd have to wait until fairing jettison and link acquisition to start getting video. By which time, the atmospheric phase would've been over. This is exactly as crazy as it sounds.

    And given that none of the rocket's recoverable, I assume that the camera's on one of the orbital stages, and that the recorded data will be downlinked over several passes as they did with ATV-4 and Sterex. Even then, I'm not convinced that the camera is for launch imagery, and would look downward. It might just be to monitor the infamous shroud area (at the interface of the payload and the third stages) nearest to the flight-computer connectors.

    Btw, Antriksh, where did you get the info from? If it was a personal contact, did you ask him/her if it was for engineering analysis of the CUS?
    EDIT: Just read it in the brochure. So the imaging system is for monitoring this.

    While it's definitely good design practice, I don't know what to make of the fact that they've got one onboard now, as opposed to the previous flights - where a camera would've had stronger justification given that those flights would've been even more 'developmental' rather than operational.

    TL;DR - Fingers crossed that the presence of the camera doesn't correlate with the egghead's lack of confidence in the stage.
    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1100UTC)
    Post by: input~2 on 08/17/2013 07:29 pm
    Launch time rescheduled at 1100UTC
    Countdown for communication satellite GSLV-D5 launch to begin at 11.50am on Sunday (http://timesofindia.indiatimes.com/home/science/Countdown-for-communication-satellite-GSLV-D5-launch-to-begin-at-11-50am-on-Sunday/articleshow/21883474.cms)
    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1100UTC)
    Post by: sanman on 08/17/2013 09:32 pm
    Regarding the assembly of the launch vehicle in the Vehicle Assembly Building and its subsequent transport to the launchpad on that slow crawler -- is this all necessary?

    Why not just mount the building and launchpad on rail tracks to shift them in or out of the way, while leaving the launch vehicle stationary? Seems to me that these large structures are less critical than the launch vehicle itself, and so they could be shifted more rapidly and less gingerly without having to use a slow crawler type of pedestal.

    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: K210 on 08/18/2013 06:37 am
    A very serious security breach has happened. Without the knowledge of ISRO officials some one has secretly intruded into the ISRO premises and shot the videos using spy cams. What is the ISRO security department doing  ? Who is responsible for these serious security breach? Also how come the composition and working of Cryogenic has been made public? We strictly need explanation for these things.

    huh? It's made by ISRO how is it a security breech? One could get the same info by doing a google search
    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1100UTC)
    Post by: Galactic Penguin SST on 08/18/2013 07:26 am
    Launch time rescheduled at 1100UTC
    Countdown for communication satellite GSLV-D5 launch to begin at 11.50am on Sunday (http://timesofindia.indiatimes.com/home/science/Countdown-for-communication-satellite-GSLV-D5-launch-to-begin-at-11-50am-on-Sunday/articleshow/21883474.cms)


    I don't think the launch time has moved - in fact the ISRO main page (http://www.isro.org) is now showing that the 29 hour countdown has commenced at 06:20 UTC.
    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1100UTC)
    Post by: seshagirib on 08/18/2013 07:41 am
    status update ( http://isro.org/ ) : propellant loading of 2nd stage in progress.
    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: input~2 on 08/18/2013 08:05 am
    Launch time rescheduled at 1100UTC
    Countdown for communication satellite GSLV-D5 launch to begin at 11.50am on Sunday (http://timesofindia.indiatimes.com/home/science/Countdown-for-communication-satellite-GSLV-D5-launch-to-begin-at-11-50am-on-Sunday/articleshow/21883474.cms)


    I don't think the launch time has moved - in fact the ISRO main page (http://www.isro.org) is now showing that the 29 hour countdown has commenced at 06:20 UTC.
    Yes, Times of India is now also quoting a 4:50pm (IST) launch time ::)
    Indian space science at threshold of a new age as GSLV-D5 countdown begins (http://timesofindia.indiatimes.com/india/Indian-space-science-at-threshold-of-a-new-age-as-GSLV-D5-countdown-begins/articleshow/21892852.cms)
    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: seshagirib on 08/18/2013 09:43 am
    ^11:00 UTC should translate to 4:30 PM. IST not 4:50 PM. IST ??
    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: input~2 on 08/18/2013 11:54 am
    ^11:00 UTC should translate to 4:30 PM. IST not 4:50 PM. IST ??
    4:30pm (IST) /11:00UTC launch time was apparently a misunderstanding from the press (PTI) and has now been reverted to the original 4:50pm (IST)/11:20UTC
    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1100UTC)
    Post by: seshagirib on 08/18/2013 04:41 pm
    status update ( http://isro.org/ ) : propellant loading of 2nd stage in progress.

     status update:

    - 2nd stage propellant loading completed.
    - strap on propellant loading in progress.
    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: AJA on 08/18/2013 07:21 pm
    Regarding the assembly of the launch vehicle in the Vehicle Assembly Building and its subsequent transport to the launchpad on that slow crawler -- is this all necessary?

    Why not just mount the building and launchpad on rail tracks to shift them in or out of the way, while leaving the launch vehicle stationary? Seems to me that these large structures are less critical than the launch vehicle itself, and so they could be shifted more rapidly and less gingerly without having to use a slow crawler type of pedestal

    They do that for the PSLV don't they? I don't think the pad-roll out is on the critical path. As in shaving time off there probably wouldn't enable faster launch processing. Moreover, I don't think it's less critical than the LV. If you break the VAB while moving it, that's going to cause delays and disrupt the next launch. And possibly even scrub the existing launch, since they don't want to risk further damage.

    On the same topic however, SpaceX do highlight the horizontal integration facility they have for the Falcon 9 - pointing out how having everything on the same floor allows concurrent access to all stages within the same facility, and eliminates hoisting operations making stuff safer, and easier to move around. One drawback is increased susceptibility for radial creep (more so for a solid stage perhaps), depending on how long the stage is horizontal. But given that aerodynamic loads during ascent are probably stronger than self-weight, this shouldn't be a show-stopper. Further, it can be countered by a clinostat mount for all the stages. Then, there's the difficulty of erecting a heavy vehicle, without putting too much stress on any one part. But I think they SpaceX learnt from Soyuz, and we can too - given the similar classes of the launch vehicles.

    I mention this because a horizontally integrated rocket, would have a higher 'safe' speed limit - although, again, I don't think roll-out is on the critical path.
    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: William Graham on 08/18/2013 10:02 pm
    Regarding the assembly of the launch vehicle in the Vehicle Assembly Building and its subsequent transport to the launchpad on that slow crawler -- is this all necessary?

    Why not just mount the building and launchpad on rail tracks to shift them in or out of the way, while leaving the launch vehicle stationary? Seems to me that these large structures are less critical than the launch vehicle itself, and so they could be shifted more rapidly and less gingerly without having to use a slow crawler type of pedestal

    They do that for the PSLV don't they? I don't think the pad-roll out is on the critical path. As in shaving time off there probably wouldn't enable faster launch processing. Moreover, I don't think it's less critical than the LV. If you break the VAB while moving it, that's going to cause delays and disrupt the next launch. And possibly even scrub the existing launch, since they don't want to risk further damage.

    There are two active orbital launch complexes at SDSC, the PSLV and GSLV can both launch from either, although the GSLV hasn't flown from the First pad since the Second one was completed. This launch is from the Second pad.

    Rockets launched from the First pad are assembled on the pad, rockets launched from the Second pad are assembled vertically and then rolled to the pad.
    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: sanman on 08/19/2013 12:16 am
    But so that sort of makes it sound like the crawler thing is an evolutionary improvement over the pad assembly. Why is doing it the crawler way better than the old way?
    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: antriksh on 08/19/2013 03:02 am
    But so that sort of makes it sound like the crawler thing is an evolutionary improvement over the pad assembly. Why is doing it the crawler way better than the old way?

    Launch pad occupancy time reduces. Multiple VABs can share a single launch pad. 
    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1100UTC)
    Post by: antriksh on 08/19/2013 03:13 am
    Regarding the assembly of the launch vehicle in the Vehicle Assembly Building and its subsequent transport to the launchpad on that slow crawler -- is this all necessary?

    Why not just mount the building and launchpad on rail tracks to shift them in or out of the way, while leaving the launch vehicle stationary? Seems to me that these large structures are less critical than the launch vehicle itself, and so they could be shifted more rapidly and less gingerly without having to use a slow crawler type of pedestal.



    Thats what the FLP is ,i.e., Integration on Pad. This limits the use of pad by one VAB only. SLP is Integrate Transfer and Launch (ITL) and will allow
    VAB and SVAB to share the SLP and the upcoming TLP.
    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1100UTC)
    Post by: seshagirib on 08/19/2013 03:49 am
    status update ( http://isro.org/ ) : propellant loading of 2nd stage in progress.

     status update:

    - 2nd stage propellant loading completed.
    - strap on propellant loading in progress.

     update:

    - 2nd stage propellant loading completed.
    - strap on propellant loading completed.
    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: input~2 on 08/19/2013 04:46 am
    Live webcast from 1045UTC on http://webcast.gov.in/live
    (also tentatively on http://216.185.104.74/isro (http://216.185.104.74/isro))
    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1100UTC)
    Post by: seshagirib on 08/19/2013 08:22 am
    status update ( http://isro.org/ ) : propellant loading of 2nd stage in progress.

     status update:

    - 2nd stage propellant loading completed.
    - strap on propellant loading in progress.

     update:

    - 2nd stage propellant loading completed.
    - strap on propellant loading completed.

    update:

    cryogenic propellants loading in progress.
    Title: Re: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1100UTC)
    Post by: vyoma on 08/19/2013 08:25 am
    status update ( http://isro.org/ ) : propellant loading of 2nd stage in progress.

     status update:

    - 2nd stage propellant loading completed.
    - strap on propellant loading in progress.

     update:

    - 2nd stage propellant loading completed.
    - strap on propellant loading completed.

    update:
    - Third Stage Cryogenic Propellant filling operation is in progress.
    - Propellant filling operation of First Stage Strap-Ons is completed.
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: AJA on 08/19/2013 08:46 am
    In before this becomes an update thread for the day.

    The Coolest Hot Engine!!!!!

    OK.. so from the video, and the brochure, this is what I've managed to corral about the CUS.

    Length: 8.7 m
    Diameter: 2.8 m
    Prop: LH2/LOX (Typical Isp of combination - 450 s (http://en.wikipedia.org/wiki/Specific_impulse))
    Propellant Mass: 12.8 tonnes

    Max Thrust: 75 kN

    Nominal thrust: 73.55 kN - including thrust from the 2 gimballed steering engines on the stage (Separate engines, or is the gas generator exhaust being used for this a la Merlin? The fact that the brochure says that the Main engine has 200s of test time and the steering has 100s makes me think these are hypergolic verniers. If it was the GG exhaust, the steering would've had ATLEAST the same run time as the main. Having said that, the animation shows a separate off axis gas generator exhaust, so that's probably used too.)

    Nominal Burn time: 720 s

    Ballpark Cricket-stadium Isp  (assuming uniform mass flow rate for 720s) : 430.2 seconds (http://www.wolframalpha.com/input/?i=75+kN%2F%2812.800+tonnes*g%2F720+seconds%29&a=UnitClash_*g.*StandardAccelerationOfGravity--&a=UnitClash_*seconds.*Seconds.dflt--&a=UnitClash_*tonnes.*MetricTons.dflt--) ...Hmm.. (http://cdn.memegenerator.net/instances/250x250/38416444.jpg)

    The nozzle has a jacket for cooling, and propellant (LH2/LOX?) pre-heating. The stage also has a bell extension. Pretty standard.

    Individual booster pumps for LH2 and LOX, feeding a main turbo-pump running at 40,000 rpm. Thrust control and mixture ratio control possible through two regulators.

    I've got a few questions:

    1) Thrust control through mixture control? As opposed to throttling both flow rates up/down proportionally to maintain optimum combustion ratio (and conserve propellant)? Does this optimum ratio change through the course of the flight (I'm thinking residual atmospheric oxygen - thinning out with height)

    2) The Mahendragiri test video grabs showed a orange/red/yellow flame... Hydrogen burning produces a blue flame doesn't it - regardless of mixture ratio? I mean it's not like there's a partial combustion product for the reaction? The flame was fidgety too.. now I'm not saying they don't have stable combustion - we might have been seeing transients - but it definitely was dancing.

    3) What the heck is happening at 7:58 in the video (http://youtu.be/lbaOU6CNmSk?t=7m58s)? Something's inflating?

    4) Like most modern cryogenic stages, the LH2 tank is physically removed from the LOX tank, with an air-gap present between them. Can someone explain why? I thought the second stage of the Saturn V implemented a great solution in realising a common bulkhead (http://www.youtube.com/watch?v=dB-jdTPLdKA - PS: 1:35 is AWESOME :D) The video explicitly mentions it for good measure, but I would've thought anyway - that the steeper thermal gradient would've been between either fluid and the ambient air. Also surprisingly for something that's meant to be kept cool, the tanks are painted black!

    5) The video showed the cryo prop-depot enclosure, but the shots of the launch pad don't seem to. How far away is it from the pad? I guess it would be desirable but is it even feasible to have a mobile cryogenic tanker? Related: has anybody here ever been to SDSC? Does ISRO conduct a guided public tour – for students/educational institutions atleast? (Or do they share Kanaka's paranoia? :P)
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: Chris Bergin on 08/19/2013 09:48 am
    Here's William Graham's excellent launch overview/preview:

    http://www.nasaspaceflight.com/2013/08/indian-gslv-launch-gsat-14-communications-satellite/
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: Chris Bergin on 08/19/2013 10:15 am
    L-65 mins. Best webcast link would be appreciated.
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: seshagirib on 08/19/2013 10:29 am
    L-65 mins. Best webcast link would be appreciated.

    government news channel:

     http://webcast.gov.in/live/

    is likely to carry the launch webcast, but cannot say much about the quality.
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: tehwkd on 08/19/2013 10:33 am
    L-65 mins. Best webcast link would be appreciated.

    With ISRO launches, the best one is usually whichever opens for you :P

    http://webcast.gov.in/live/
    http://ibnlive.in.com/livetv/ 
    http://live.indiatimes.com/ 
    http://www.ndtv.com/video/live/channel/ndtv24x7
    http://216.185.104.74/isro
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: input~2 on 08/19/2013 10:40 am
    Hindustan Times     ‏@htTweets                          Isro halts countdown of GSLV rockets due to a leak: TV reports #ht
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: tehwkd on 08/19/2013 10:40 am
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: AJA on 08/19/2013 10:41 am
    SCRUB! Reporter said "Hold"

    The news ticker's showing: "ISRO calls off scheduled GSLV-D5 launch due to technical reasons"

    Smoke emanating from the 2nd stage, during the cryo-tanking.
    A press meet (with the chairman of the review board) is scheduled in a short while from now apparently, which makes me think it's a scrub.
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: Galactic Penguin SST on 08/19/2013 10:43 am
    Was it a scrub for the day?
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: tehwkd on 08/19/2013 10:44 am
    Title: Re: SCRUB: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: Chris Bergin on 08/19/2013 10:44 am
    Well that's a scrub then.
    Title: Re: SCRUB: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: input~2 on 08/19/2013 10:44 am
    Title: Re: SCRUB: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: albatros68 on 08/19/2013 10:46 am
    Was a new launch date scheduled?
    Title: Re: SCRUB: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: input~2 on 08/19/2013 10:47 am
    Quote
    LAUNCH WINDOW FOR THE REMAINING PERIOD FROM 20TH AUGUST TO 5TH SEPT  2013 SHALL BE KEPT ALIVE FOR RESCHEDULING  OF LAUNCH IF REQUIRED.
    Title: Re: SCRUB: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: AJA on 08/19/2013 10:50 am
    Right, there's a press meet on with the ISRO Chairman - as soon as the room settles down.

    "Countdown progressed well, and a few minutes ago, we observed a leak in the fuel system of the second stage of the vehicle, and because of this we are calling off the launch"

    "Our teams have been put on action to drain out the liquid propellants from the 2nd stage, the four L-40 strap-ons and the Cryogenic stage. Soon after that, we will move the vehicle to the VAB, and we need to make an assessment of the cause of the leak, and what are the actions that we need to take before further preparations for the launch."

    No launch today.

    Says they need to meet with the team to review the data, and then decide on a new date.

    EDIT -caught this on a replay of the interview: In response to a question, ISRO Chairman the leak was detected "just 2 hours before liftoff."

    Inaudible question : Someone replied that the problem was detected after LOX loading was complete, and just as they were starting LH2 filling. He also clarifies that this has nothing to do with the leak in the 2nd stage.
    Title: Re: SCRUB: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: input~2 on 08/19/2013 10:52 am
    Title: Re: SCRUB: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: input~2 on 08/19/2013 10:55 am
    Scrub confirmed by ISRO chairman
    Title: Re: SCRUB: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: Galactic Penguin SST on 08/19/2013 11:09 am
    Apparently launch will be delayed >1 week as the rocket will be rolled back and de-stacked.
    Title: Re: SCRUB: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: input~2 on 08/19/2013 12:27 pm

    ISRO press release

    August 19, 2013                                                               
                                                                             
    GSLV-D5 Launch Called-Off
                 The Launch of the GSLV-D5 scheduled for 1650 hrs today (August 19, 2013)  is called off, as a leak is observed in the UH25 fuel system of the  liquid second stage during the pre-launch pressurisation phase on the  vehicle just two hours before the scheduled lift-off.

     The propellants are being drained from the Cryogenic Stage, Liquid  Second Stage and the four liquid Strap-ons of GSLV-D5. The vehicle will  be moved back to the Vehicle Assembly Building for further actions.

     The revised launch date will be announced after a detailed assessment.     
    Title: Re: SCRUB: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: xm11 on 08/19/2013 06:57 pm
    if it delay to one week
    will be two launch one of gsat 14 and gsat 7 from arianespace
    Title: Re: SCRUB: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: isro-watch on 08/20/2013 12:51 am
    Something really unusual in GSLV...at least, I have never seen !!!

    http://www.ndtv.com/video/player/news/india-s-200-crore-space-mission-delayed-after-leak-in-rocket/287475

    Look closely at 21 seconds to 24 seconds in the video...You see a liquid gushing out !!!

    Not sure if this has anything to do with the leak
    Title: Re: SCRUB: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: ozspace on 08/20/2013 01:47 am
    Something really unusual in GSLV...at least, I have never seen !!!

    http://www.ndtv.com/video/player/news/india-s-200-crore-space-mission-delayed-after-leak-in-rocket/287475

    Look closely at 21 seconds to 24 seconds in the video...You see a liquid gushing out !!!

    Not sure if this has anything to do with the leak

    I believe you are seeing water sprayed onto the pad from the tower, possibly for acoustic, fire or thermal control to minimise damage.
    Title: Re: SCRUB: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: isro-watch on 08/20/2013 01:55 am
    I believe it will take them quite long to fix this problem. The last time when there was an issue with PS2 stage in PSLV-C10, they took many months...

    This time, the problem seems more serious. Clearing out propellants, bringing the rocket back to the pad, dismantling and re-assembly !!!
    Title: Re: SCRUB: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: AJA on 08/20/2013 10:15 am
    Something really unusual in GSLV...at least, I have never seen !!!

    http://www.ndtv.com/video/player/news/india-s-200-crore-space-mission-delayed-after-leak-in-rocket/287475

    Look closely at 21 seconds to 24 seconds in the video...You see a liquid gushing out !!!

    Not sure if this has anything to do with the leak

    I believe you are seeing water sprayed onto the pad from the tower, possibly for acoustic, fire or thermal control to minimise damage.

    Look at the top right. The jet's seen at a time of L-1:14:20 (and the clock isn't counting)  - so this was after they stopped the countdown. (At 00:32 in the news report, there's a shot from earlier in the countdown, only showing what I assume is condensation around some cool plumbing in the tower).

    <speculation follows. Begs pardons :P>

    I don't know what the detox process is for hypergols, but given that the jet was aimed at the bottom of the second stage (between the bottom of the engine shroud and the interstage), I'm assuming that the epicentre of the leak was somewhere there, and the water was used to possibly dissolve the toxic UH25 and wash it down - rather than it volatilise, and have vapours hang around the pad.

    Also, going through this thread, I found that the second stage propellant loading was completed (latest) by 0919 hrs IST (http://forum.nasaspaceflight.com/index.php?topic=30160.msg1085819#msg1085819) on launch day. (L-07:31:00). From the ISRO Chairman's statement, we know they detected the leak at L-2:00:00. Interestingly, cryogenic propellant loading (LOX first) commenced (no later than) 1352 hours (http://forum.nasaspaceflight.com/index.php?topic=30160.msg1085848#msg1085848) (L-2:58:00).

    So that's a gap of ~5.5 hours between completion of 2nd stage prop loading to first leak detection; or, a gap of 58 minutes between cryo loading and the same[1]. (Another 46 min before they stopped countdown) - presumably to rule out instrumentation fault, and to confirm a leak via appreciable change in tank pressures/levels (Media reports of "smoke" were post-hoc).

    [1] After reading this in the brochure:
    Quote
    Modified design of the Fuel Booster Turbo Pump (FBTP), taking care of the expansion and contraction of the bearings and casing at cryogenic temperatures
    - I was tempted to blame similar 'unexpected' contraction for the 2nd stage counterparts, for the leak, but the cold stuff is whole stage apart. So, I'm leaning toward some contamination/corrosion/manufacturing defect as a cause.
    Title: Re: SCRUB: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: chota on 08/20/2013 12:49 pm
    ISRO may use a standby engine to launch GSLV after further tests

    http://economictimes.indiatimes.com/news/politics-and-nation/isro-may-use-standby-engine-to-launch-gslv/articleshow/21935355.cms
    Title: Re: SCRUB: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: chota on 08/20/2013 01:08 pm
    Isro scientists have remotely drained the fuels from the second stage and the indigenous cryogenic engine

    GSLV to be moved to VAB on Sunday or Monday to ascertain the damage and further investigation

    http://timesofindia.indiatimes.com/india/GSLV-D5-safe-after-fuel-is-drained-to-be-moved-out-of-launch-pad-on-August-25/articleshow/21934982.cms
    Title: Re: SCRUB: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: akaash on 08/23/2013 05:47 am
    GSLV relaunch will take several months. Even if the defect is found to be a minor one, it would take at least two months. If it’s a major problem, it might take longer,

    http://newindianexpress.com/states/kerala/GSLV-relaunch-will-take-several-months/2013/08/23/article1747479.ece (http://newindianexpress.com/states/kerala/GSLV-relaunch-will-take-several-months/2013/08/23/article1747479.ece)
    Title: Re: SCRUB: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: input~2 on 08/27/2013 11:17 am
    ISRO to assemble another engine for aborted GSLV (http://www.newstrackindia.com/newsdetails/2013/08/27/269--ISRO-to-assemble-another-engine-for-aborted-GSLV-.html)
    Title: Re: SCRUB: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: Chris Bergin on 08/27/2013 01:33 pm
    Wow, months.

    But as with all rockets, that's good news when they find the issue on the ground and not half way uphill!
    Title: Re: SCRUB: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: antriksh on 08/27/2013 04:12 pm

    What stopped India's rocket launch? 750 kg of leaking fuel

    NDTV has now learnt that scientists discovered that 750 kilograms of highly inflammable and explosive fuel had leaked from the engine.


    "There is no generic problem with the rocket," Mr Radhakrishnan told NDTV. The launch will be attempted again in December.

    http://www.ndtv.com/article/india/what-stopped-india-s-rocket-launch-750-kg-of-leaking-fuel-411152?pfrom=home-lateststories
    Title: Re: SCRUB: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: robertross on 08/27/2013 10:59 pm
    Wow, months.

    But as with all rockets, that's good news when they find the issue on the ground and not half way uphill!

    How true.
    Title: Re: SCRUB: GSLV D5 (MkII) GSAT-14, August 19, 2013 (now December 2013)
    Post by: sanman on 08/28/2013 03:30 am
    ISRO to assemble another engine for aborted GSLV:

    http://zeenews.india.com/news/space/isro-to-assemble-another-engine-for-aborted-gslv_872172.html

    Title: Re: SCRUB: GSLV D5 (MkII) GSAT-14, August 19, 2013 (now December 2013)
    Post by: chota on 08/28/2013 12:34 pm
    "Next flight in December for which first and third stages are preserved. Second stage is being prepared"

    "ISRO used an old tank delivered 4 years ago in the second stage which might be prone to cracks"

    http://www.thehindu.com/sci-tech/science/gslv-flight-with-indigenous-cryogenic-engine-only-in-dec-isro/article5068115.ece
    Title: Re: SCRUB: GSLV D5 (MkII) GSAT-14, August 19, 2013 (now December 2013)
    Post by: Star One on 08/28/2013 12:49 pm
    "Next flight in December for which first and third stages are preserved. Second stage is being prepared"

    "ISRO used an old tank delivered 4 years ago in the second stage which might be prone to cracks"

    http://www.thehindu.com/sci-tech/science/gslv-flight-with-indigenous-cryogenic-engine-only-in-dec-isro/article5068115.ece

    Seems a little odd to be using a tank that had been in storage for four years on your flagship launcher on arguably its most important launch?
    Title: Re: SCRUB: GSLV D5 (MkII) GSAT-14, August 19, 2013 (now December 2013)
    Post by: seshagirib on 08/28/2013 02:55 pm
    Time to move back this thread to Indian launchers section.....we are not going to see a launch attempt any time soon.
    Title: Re: SCRUB: GSLV D5 (MkII) GSAT-14, August 19, 2013 (now December 2013)
    Post by: chota on 08/29/2013 04:54 pm
    "The leak is suspected to be in the lower portion of the propellant tank or the fluid lines between the tank and fuel filling system of the Second stage"

    "A new Liquid Second Stage (GS-2) is being assembled to replace the leaked-stage"

    "All the four Liquid Strap-on Stages are being replaced with new ones"

    "Cryogenic Stage will be preserved"

    "GSLV Vehicle assembly and checkout is expected to be completed by first week of Dec'13 and launch in same month"

    http://www.isro.org/pressrelease/scripts/pressreleasein.aspx?Aug29_2013

    Title: Re: SCRUB: GSLV D5 (MkII) GSAT-14, August 19, 2013 (now December 2013)
    Post by: AJA on 08/30/2013 08:17 pm
    So what happens to these 'wetted' strapons - especially the engines, and the plumbing that was isolated from direct contact by closed valves? And the second stage engine? Discarded as toxic waste? Are they even going to bother inspecting them for salvage potential?

    It'd be nice if we had 4 sub-orbital/sounding rocket payloads and some "world-famous-in-India" JugaaD mounting mechanism  ;D
    Title: Re: SCRUB: GSLV D5 (MkII) GSAT-14, August 19, 2013 (now December 2013)
    Post by: chota on 08/31/2013 03:44 pm
    http://www.thehindu.com/todays-paper/tp-national/questions-over-fuel-leak-in-gslv/article5077608.ece
    Title: Re: SCRUB: GSLV D5 (MkII) GSAT-14, August 19, 2013 (now December 2013)
    Post by: chota on 09/04/2013 11:15 am
    The second stage has a single tank to store both UDMH and N204 both of which are seperated by a common bulkhead
    Title: Re: SCRUB: GSLV D5 (MkII) GSAT-14, August 19, 2013 (now December 2013)
    Post by: sanman on 09/14/2013 03:35 am
    ISRO to assemble new stage for GSLV flight:

    http://www.deccanherald.com/content/356989/isro-make-stage-gslv.html
    Title: Re: SCRUB: GSLV D5 (MkII) GSAT-14, August 19, 2013 (now December 2013)
    Post by: Stan Black on 09/15/2013 07:39 am
    ISRO to assemble new stage for GSLV flight:

    http://www.deccanherald.com/content/356989/isro-make-stage-gslv.html

    So the designation D5 is more a mission identifier than the actual rocket serial number. And where are they sourcing all these spare rocket stages; from F03 and F05, or from D4 (or was that F06)?
    Title: Re: SCRUB: GSLV D5 (MkII) GSAT-14, August 19, 2013 (now December 2013)
    Post by: sanman on 09/27/2013 08:01 pm
    ISRO Chairman: GSLV D5 ready for launch on December 15

    http://www.indianexpress.com/news/gslv-d5-ready-for-launch-on-december-15-isro-chairman/1175296/

    Title: Re: GSLV D5 (MkII) GSAT-14, December 15, 2013
    Post by: input~2 on 11/05/2013 11:08 am
    Preparations in full swing for December 15 GSLV mission (http://www.deccanchronicle.com/131105/news-current-affairs/article/preparations-full-swing-december-15-gslv-mission)
    Title: Re: GSLV D5 (MkII) GSAT-14, December 15, 2013
    Post by: Star One on 11/05/2013 11:53 am

    Preparations in full swing for December 15 GSLV mission (http://www.deccanchronicle.com/131105/news-current-affairs/article/preparations-full-swing-december-15-gslv-mission)

    Thanks for that article. It mentions its performance to a variety of orbits, is it known what it can launch to the Moon or Mars as I know it will also be fulfilling India's further ambitions in interplanetary missions?
    Title: Re: GSLV D5 (MkII) GSAT-14, December 15, 2013
    Post by: sanman on 11/05/2013 02:37 pm
    Thanks for that article. It mentions its performance to a variety of orbits, is it known what it can launch to the Moon or Mars as I know it will also be fulfilling India's further ambitions in interplanetary missions?

    They wanted to use it for this Mars mission, but it wasn't ready in time with an adequate reliability track record.

    They'll be using it on the next Chandrayaan-2 mission to the Moon, which will land an Indian rover on the surface.

    Probably it could get used for further missions to Mars too, since it will be able to send significantly more payload.
    Title: Re: GSLV D5 (MkII) GSAT-14, December 15, 2013
    Post by: baldusi on 11/05/2013 06:44 pm
    PSLV is a four stages rocket. GSLV is a three stage with an H2 third but a very inefficient first (the boosters actually carry the empty weight of the first stage for almost a minute!). For GTO, the GSLV Mk.II should do about twice than the PSLV. I wonder, if they would use the extra performance for direct injection.
    Title: Re: GSLV D5 (MkII) GSAT-14, December 15, 2013
    Post by: chota on 11/06/2013 12:14 pm
    Quote
    PSLV is a four stages rocket. GSLV is a three stage with an H2 third but a very inefficient first (the boosters actually carry the empty weight of the first stage for almost a minute!).

    The 4 boosters burn longer than the Core Stage and remain attached to the middle core.

    Though PSLV and GSLV share the same solid first stage, PSLV uses SITVC whereas GSLV uses EGC on each of the 4 L40 strapons for stabilization. SITVC on S139 solid motor is a backup. L40 also has fins for stability and can be started and stopped.
    Title: Re: GSLV D5 (MkII) GSAT-14, December 15, 2013
    Post by: AJA on 11/06/2013 05:03 pm
    Yeah, but what baldusi said still holds. The rocket's carrying an empty stage. Having said that, the empty core isn't dead-weight - given that it acts as the thrust transfer structure from the strap-ons to the rest of the stack. It'd be interesting to read about why they didn't reverse the solid/liquid config. i.e. solid strap-on boosters, and liquid core, with the same burn times for both types.


    Would that not offer an additional abort-to-LEO mode? i.e. if something was wrong with the solid boosters, you could cut them loose prematurely, and they'd rocket off (provided they don't crash into the rest of the stack. The pyro motors used to jettison could possibly give them enough of a kick and a 'point-away'?). If something was wrong with the liquid stage, then you'd shut it down, and do only a solid burn for the first stage.


    There'd be an IMMENSE performance hit, but if you could still make orbit with it, then the payload could possibly still reach its intended orbit, albeit by spending its own fuel, and shortening its own lifetime. Even if it couldn't, something could be done with it in a rudimentary orbit - as opposed to writing it off?


    Did/do any launch vehicles offer this? The flight control software would have to be amazingly nimble, to say nothing of the rest of the stack being strong enough to not break up under aero-acoustic & aero-structural loads of a drastic change in flight direction, and being exposed to booster exhaust/buffeting.
    Title: Re: GSLV D5 (MkII) GSAT-14, December 15, 2013
    Post by: sanman on 11/06/2013 08:00 pm
    But what you've all said applies to GSLV-Mk2 only, and that vehicle seems like it was really meant as just a stepping stone to validate the technologies for GSLV-Mk3  (Yes, I see a bunch of Mk2 missions on the roadmap, but I'd always assumed that's because Mk2's hardware is cheaper to use for those missions than the Mk3)

    Once the Mk3 gets rolling, I'd thought that the roadmap might be significantly revised, especially if ISRO takes on more paying customers.
    Title: Re: SCRUB: GSLV D5 (MkII) GSAT-14, August 19, 2013 (ETD 1120UTC)
    Post by: akula2 on 11/07/2013 11:13 am
    Wow, months.

    But as with all rockets, that's good news when they find the issue on the ground and not half way uphill!
    My initial reaction was: oh no! how much money will be lost (high taxpayers, ISRO & to Govt/businesses who can't lease/buy) because of this leak disaster and the impending delay  :-X

    I've made plans to build my own Satellites by 2020 (three).
    Title: Re: GSLV D5 (MkII) GSAT-14, December 15, 2013
    Post by: chota on 11/18/2013 05:55 am
    Tomorrow 19-Nov,  the exact GSLV launch date will be confirmed. It might get delayed to end of December.

    http://newindianexpress.com/states/kerala/Meet-on-GSLV-mission-launch-set-for-19th-November/2013/11/18/article1897001.ece
     
    Title: Re: GSLV D5 (MkII) GSAT-14, December 15, 2013
    Post by: vyoma on 11/20/2013 04:23 am
    GSLV D5 (MkII) launch December end; no dates yet.
    http://www.deccanchronicle.com/131120/news-current-affairs/article/gslv-launch-december-end
    Quote
    Speaking to reporters at the city airport, Dr K. Radha­krishnan, chairman of the Indian Space Res­earch Organisation (IS­RO) said that scientists identified problem in the cryogenic stage of the GSLV and had rectified the issue. “The lau­nch vehicle is ready for lau­nch and we plan to lau­nch it in December,” he said.
    Title: Re: GSLV D5 (MkII) GSAT-14, December 15, 2013
    Post by: vyoma on 11/20/2013 01:27 pm
    This interview has some info about GSLV rebuilding and launch preparation (last question):
    http://thehindu.com/opinion/interview/mars-orbiter-tests-have-shown-our-ability-to-predict-isro-chairman/article5372129.ece

    Mission Readiness Review on Dec 3rd.
    Title: Re: GSLV D5 (MkII) GSAT-14, December end, 2013
    Post by: ss1_3 on 11/27/2013 12:29 pm
    This article places the launch in third week of December:

    http://bit.ly/18nN6DD

    Quote
    The indigenous cryogenic third stage engine is ready. The mission readiness meet will be held on December 3 and the GSLV-D5 will be launched by December third week from Sriharikota

    Article also contains updates on upcoming MkIII launches.
    Title: Re: GSLV D5 (MkII) GSAT-14, December end, 2013
    Post by: AJA on 11/28/2013 03:13 am
    This article places the launch in third week of December:
    http://bit.ly/18nN6DD (http://bit.ly/18nN6DD)

    I. have. no. words. No words. Yes, it's ToI, but this is a new low - even for them.

    Quote
    " ... The GSLV Mark III variant, initial launch planned by April next year is a sub-orbital flight test having the first and second stage active solid and liquid propellants, its cryogenic stage will be passive," said Vikram Sarabhai Space Centre (VSSC) director S Ramakrishnan.

    (Emphasis mine)
    What. in. the. HELL. does that mean? Testing a rocket with an upper stage mass simulator is simply not the same as saying 'Yeah, we'll launch the rocket in the final operational flight configuration - with a fully fuelled, and fully operational upper (and most expensive) stage; but we won't start it' - which is what that quote seems to imply. Unbelievably, that seems to be a direct quote from the VSSC director. If I were him, I'd call back and clarify - but I doubt ToI'll run errata.

    But wait.. that's not it.

    Quote
    "An advanced heavy cryogenic engine C-25 is being designed with 25 ton propellant loading with 20 tonnes of engine thrust for the GSLV Mk-3 D-1 mission in early 2017," he said. "The huge cryogenic engine is slated for completion and testing by 2015."
    (Emphasis mine)
    WHAT? 25 ton propellant loading, with 20 tonnes of thrust (yes, I noticed the inconsistency in spelling of 'tonne' in the same sentence) is not an engine... on the contrary, it's a very heavy piece of equipment that's going to fall out of the sky! Again, these figures might be accurate, if the stage has 25 tonnes of prop, and has 2 x 20 tonne thrust engines. (But that's quite an acceleration for the upper stage and payload, unless the engines are capable of deep throttling).

    It might even be possible to have a 25 tonne upper stage (and this is prop weight only, and not engine weight) that is already orbital prior to its ignition. But I seriously doubt that - especially since the same 'article' has said that the GSLV-Mk III's first developmental flight is going to be sub-orbital.

    Finally,

    Quote
    Oxygen remains a liquid only at temperatures below minus 1830 Celsius and Hydrogen at minus 2530 Celsius, developing a cryogenic engine from such propellants is a crucial test.

    <Shaking head>

    I swear all it takes to get the degree symbol into any commonly used text editor is googling "degree symbol" and copy pasting it. Like so.  °


    Don't tell me the typesetting software for the newspaper doesn't support it. They were extremely quick to chest-thump and use the rupee symbol (which still doesn't have a unicode character assigned to it) as soon as it was adopted (EDIT: before unicode support) - but they can't use "°" ? ESPECIALLY when, you know, being the country that's credited with the invention of 'zero' (atleast in the same chest thumping vein of popular culture), we should really understand place value. Screw that, you should really understand place value if you're literate. Forget country of origin.

    Yeah, there's a vanishingly small chance that the 'reporter' was aware of research in negative absolute temperatures (http://www.youtube.com/watch?v=yTeBUpR17Rw), but that still doesn't change the boiling points of LOX and LH2.

    Oh, and yes... I also noticed the use of a comma instead of a semicolon, and the telling lack of a conjunction.

    </rant>

    PS : I've sent feedback with the permalink to this message
    Title: Re: GSLV D5 (MkII) GSAT-14, December end, 2013
    Post by: input~2 on 11/30/2013 06:31 am
    Please post GSLV MkIII related posts in the dedicated thread for GSLV MkIII (http://forum.nasaspaceflight.com/index.php?topic=15187.0)
    Title: Re: GSLV D5 (MkII) GSAT-14, December end, 2013
    Post by: ss1_3 on 12/03/2013 06:00 am
    Launch pushed to January first week

    http://economictimes.indiatimes.com/news/politics-and-nation/isros-gslv-d5-launch-likely-early-next-month/articleshow/26780715.cms
    Title: Re: GSLV D5 (MkII) GSAT-14, January 5, 2014
    Post by: input~2 on 12/03/2013 07:43 pm
    Local newspaper in Telugu says launch set for January 5 (LT)
    (source (http://www.andhrabhoomi.net/node/119377))
    Title: Re: GSLV D5 (MkII) GSAT-14, January 5, 2014
    Post by: input~2 on 12/13/2013 08:37 pm
    Thailand has been warned of potential debris falling close to its territory from GSLV D5 launch "between December 15 to January 14"
    (source (http://www.nationmultimedia.com/national/Falling-satellite-carrier-expected-to-land-in-sea--30222068.html))
    Title: Re: GSLV D5 (MkII) GSAT-14, January 5, 2014
    Post by: kanaka on 12/15/2013 12:57 pm
    Thailand has been warned of potential debris falling close to its territory from GSLV D5 launch "between December 15 to January 14"
    (source (http://www.nationmultimedia.com/national/Falling-satellite-carrier-expected-to-land-in-sea--30222068.html))


    Thailand has been warned!!!! Does this mean that our scientists are not confident of successful launch :(?
    Title: Re: GSLV D5 (MkII) GSAT-14, January 5, 2014
    Post by: AJA on 12/15/2013 01:59 pm
    Thailand has been warned!!!! Does this mean that our scientists are not confident of successful launch :( ?

    Yup. Sujata Singh is due to make an announcement in the next week... if the Thai government doesn't invite the protesters for talks, then we're going to drop the GSLV D-5 near their islands and scare them into it.
    </sarcasm> :P

    This does beg the question though... If we're going to go ahead with launches even when, as in this case, there's a chance of spent stages falling near/on populated areas... if we're going to deem pre-launch warnings as sufficient mitigating steps to avoid damage - then why did/do they even factor launch groundtracks into a selection of the launch site/azimuth?

    In other words, why aren't we considering the very tip of India, or a straight south (or even North) trajectory for the PSLV etc.? We can just warn Sri Lanka (or parts of India) like we've warned Thailand prior to a launch.

    The subjective nature, and arbitrariness of the line dividing acceptable and not acceptable is always confounding.
    Title: Re: GSLV D5 (MkII) GSAT-14, January 5, 2014
    Post by: William Graham on 12/15/2013 07:50 pm
    In other words, why aren't we considering the very tip of India, or a straight south (or even North) trajectory for the PSLV etc.? We can just warn Sri Lanka (or parts of India) like we've warned Thailand prior to a launch.

    It is possible that this could have something to do with reliability - or in the GSLV's case, lack thereof. To date, more GSLVs have ended up in the Indian Ocean than the correct orbit, its success rate is less than 30%, and it hasn't had a successful launch in the last four attempts. The PSLV by contrast has had 21 consecutive successful launches with around a 90% success rate overall. So maybe they just realise this one is more likely to fail.
    Title: Re: GSLV D5 (MkII) GSAT-14, January 5, 2014
    Post by: input~2 on 12/15/2013 08:39 pm
    Thailand has been warned of potential debris falling close to its territory from GSLV D5 launch "between December 15 to January 14"
    (source (http://www.nationmultimedia.com/national/Falling-satellite-carrier-expected-to-land-in-sea--30222068.html))

    Thailand has been warned!!!! Does this mean that our scientists are not confident of successful launch :( ?

    Thailand has just been warned that the 2nd stage debris from GSLV D5 "will fall about 260 kilometres off Phang Nga's coast ". This will be published later in a NOTAM and is normal practice. No relation to a lack of confidence of ISRO! ;D
    Here are the NOTAMed zones for GSLV F6 for the failed December 25, 2010 launch , the closest to Thailand was about 260 km from the coast
    Title: Re: GSLV D5 (MkII) GSAT-14, January 5, 2014
    Post by: AJA on 12/16/2013 06:53 am
    Firstly, 260 km off the coast is international waters, so I think all our discussion below's moot. I think ISRO's just being nice. Mea culpa.. I should have clicked through and read the link posted by input~2.

    Having said that though..

    It is possible that this could have something to do with reliability - or in the GSLV's case, lack thereof. To date, more GSLVs have ended up in the Indian Ocean than the correct orbit, its success rate is less than 30%, and it hasn't had a successful launch in the last four attempts. The PSLV by contrast has had 21 consecutive successful launches with around a 90% success rate overall. So maybe they just realise this one is more likely to fail.

    I thought the launch azimuth was decided and corresponding NOTAMs detailing ZOEs were issued regardless of predicted launch vehicle success or failure... and even assuming an FTS malfunction[2], preventing destruction..
    i.e. if you're outside the boxes, you're always safe[1] - whether the rocket breaks up or not... (the cross range dimensions of the box are calculated based on the maximum deviation that the rocket can make - pitch and yaw without aero-structural loads ripping it to shreds, as well as the total burn time of the propellant).

    And in any case, that doesn't answer the PSLV question. It's proven its reliability, so we shouldn't hesitate from sending it over Sri Lanka. That's more mass to polar orbit, almost for free! No design changes.. nothing..
    Of course, this might still not be desirable if the spent stage would fall on to the Sri Lankan land mass (or even their offshore - useful EEA) in the course of a nominal launch. If it would require us to clean up the surrounding area, it would probably nullify the cost advantage (but we still keep the greater mass to orbit advantage).

    Now it's a question of numbers. How much does the launch angle and the subsequent yaw manoeuvre cost us in terms of mass penalty? Would it open up a new market segment?

    [1] To the same extent that people around the launch pad itself are safe...
    [2] On its own, and assuming the guidance input is all fine, this is probably ok to analyse. But if you couple a software error - like mixing up East and West... it gets ridiculous real fast.. lol
    Title: Re: GSLV D5 (MkII) GSAT-14, January 5, 2014
    Post by: vyoma on 12/16/2013 07:38 am
    Now it's a question of numbers. How much does the launch angle and the subsequent yaw manoeuvre cost us in terms of mass penalty? Would it open up a new market segment?



    I remember reading sometime ago about performance penalty on PSLV due to dogleg maneuver, to avoid flying over Sri Lanka:
    Seems like this might be one of the more dramatic examples of course shaping among world-wide launch sites?  I suppose that imposes some performance penalty, as would trying to shoot for the poles from anywhere this close to the equator?

    Performance penalty is close to 500 Kgs of payload loss. ISRO is considering  second  spaceport that will not require such course shaping.

    ISRO is working on third launch pad in SHAR and considering a new launch site that will improve the payload capacity of current launch vehicles by 500 kgs. Currently, a launch blocks the launch pad for 60 days. With the third launch pad, ISRO is hoping to reduce the gap to 30 days. We need more frequent PSLV launches that will boost commercial activities.

    I guess proposed Kulasekarapattinam space port should eliminate this performance penalty:
    http://www.deccanchronicle.com/131113/news-current-affairs/article/kulasekarapattinam%E2%80%99s-ideal-launch-pad
    Title: Re: GSLV D5 (MkII) GSAT-14, January 5, 2014
    Post by: vyoma on 12/16/2013 09:13 am
    This just in! Exact launch date will be decided/announced on Dec 27th.
    Quote
    "The GSLV launch will be in January. The exact date will be decided Dec 27 at a meeting," M.Y.S.Prasad, director, Satish Dhawan Space Centre (SDSC), told IANS over phone from Sriharikota in Andhra Pradesh.

    http://www.business-standard.com/article/news-ians/isro-to-decide-dec-27-on-gsat-14-launch-date-113121600343_1.html
    Title: Re: GSLV D5 (MkII) GSAT-14, NET January 7, 2014
    Post by: input~2 on 12/16/2013 09:26 am
    Thanks for the reference
    Quote from:  IANS
    ISRO officials told IANS that the rocket would be moved to the launch pad Dec 28 or 29 and after that around 10 days would be needed to ready the rocket for its flight.
    So launch not earlier than January 7
    Title: Re: GSLV D5 (MkII) GSAT-14, NET January 7, 2014
    Post by: chota on 12/19/2013 10:52 am
    Quote
    GSLV-D5 is all set to soar the skies off Sriharikota space-port. The launch is targeted on 1618 hrs of January 5, 2014

    https://www.facebook.com/isroofficial

    https://twitter.com/isroofficial
    Title: Re: GSLV D5 (MkII) GSAT-14, NET January 7, 2014
    Post by: Galactic Penguin SST on 12/19/2013 11:53 am
    Quote
    GSLV-D5 is all set to soar the skies off Sriharikota space-port. The launch is targeted on 1618 hrs of January 5, 2014

    https://www.facebook.com/isroofficial

    https://twitter.com/isroofficial

    = 10:48 UTC
    Title: Re: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: chota on 12/23/2013 12:13 am
    Details on the restoration flight.

    http://www.thehindu.com/news/national/gslvd5-to-lift-off-on-january-5/article5487536.ece
    Title: Re: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: chota on 12/23/2013 12:10 pm
    Out now, the lauch vechicle integration photos and old brochure

    http://www.isro.org/gslv-d5/pdf/brochure.pdf

    http://www.isro.org/gslv-d5/Imagegallery/launchvehicle.aspx
    Title: Re: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: AJA on 12/23/2013 08:00 pm
    http://www.thehindu.com/news/national/gslvd5-to-lift-off-on-january-5/article5487536.ece

    Quote
    The leak was blamed on the fuel tank made of aluminium alloy called Afnor 7020 which tended to develop cracks over a period of time. The GSLV-D5 was dismantled and the “restoration process” done under the guidance of K. Narayana, former Director, Satish Dhawan Space Centre, Sriharikota. The GSAT-14 communication satellite, which was encapsulated in the heat shield, was preserved and tested periodically.

    Since the liquid fuel leaked from the second stage tank made of aluminium alloy Afnor 7020, the Liquid Propulsion Systems Centre (LPSC), ISRO, Mahendragiri, Tamil Nadu, came up with a new second stage with its propellant tank made of aluminium alloy 2219. The four strap-on booster motors were refurbished. The rocket’s first stage, which uses solid propellants, has been replaced with a new one. The restored vehicle has new electronic components because the components in the four strap-on motors in the earlier vehicle had become wet from the fuel leak.

    ....

    The GSLV-D5’s cryogenic stage had been stored for the past three months-and-a-half. Mr. Dathan added: “The cryogenic stage’s critical components and valves have been tested, and found in good condition. There are three levels of checks on the vehicle. Phase III, level I checks have been done. This means all the fluid lines and electrical circuits have been checked. Everything is giving results as expected. We are ready to go ahead with the launch.”


    Given that they've gone for new "dry" units of all the liquid stages...

    Any word on whether they will/have changed out the prop tanks on GSAT-14? Or if not, if they've atleast drained it of all its propellant, and will be filling it again? I would think that it'd offer a benefit from the the corrosion resistance perspective? Or does it not matter/make it worse if you drain once the tanks have been "wetted"?

    Also, is this corrosion resistance greater or lesser in orbit? Thinking about solute diffusion, and relative densities...
    Title: Re: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: input~2 on 12/26/2013 08:38 pm
    GSLV-D5 integrated with GSAT 14 satellite (http://economictimes.indiatimes.com/news/politics-and-nation/gslv-d5-integrated-with-gsat-14-satellite/articleshow/27983635.cms)
    Title: Re: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: vyoma on 12/27/2013 01:15 pm
    ISRO’s Launch Authorisation Board approves GSLV-D5 Jan 5 launch. 29-hour countdown to begin on Jan 4th.
    http://www.thehindubusinessline.com/news/science/lab-clears-gslv-d5-launch-countdown-from-jan-4/article5508570.ece
    Title: Re: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: AJA on 12/28/2013 06:38 pm
    On the launch pad. (https://twitter.com/ISROOFFICIAL/status/416922892329185280)
     (Attached large version of the same pic)

    In the VAB prior to MLP rollout (http://www.isro.org/gslv-d5/Imagegallery/launchvehicle_images/gslv-d5-13.jpg) ...
    Nice shot of the payload air-conditioning duct. I assume all these white wire-ties(?) (http://www.isro.org/gslv-d5/Imagegallery/launchvehicle_images/gslv-d5-9.jpg) are to hold this duct in place, during tanking, and cryo-filling etc?

    Transporting the cryo stage into the VAB (horizontally) (http://www.isro.org/ gslv-d5/Imagegallery/launchvehicle_images/gslv-d5-10.jpg) for stacking and integration..
    I'm asking again... but could somebody explain why the coldest stage is painted black? Sure, it may not be paint, and it may just be the colour of the insulation material, but what good insulators are coloured black?
    Title: Re: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: vyoma on 01/02/2014 03:54 am
    Quote
    Dr. Radhakrishnan said: “We got a new S139 solid first stage. Its four liquid strap-on stages have a lot of avionics, so we refurbished them at Mahendragiri and Hindustan Aeronautics Ltd. We also made a new second stage. When the launch was called off in August, the liquid stage had to be drained of fuel and washed with much water. This might have affected the electronics systems, so we replaced them, too.”

    Quote
    More importantly, the fuel tank material has been changed, fully phasing out the traditional but corrosion-prone aluminium-zinc combine, called AFNOR 7020. The new alternative, aluminium-copper alloy called AA2219, is now the material for all PSLV and GSLV tanks.

    http://www.thehindu.com/news/national/will-2014-place-isro-in-cryo-club/article5527391.ece
    Title: Re: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: vyoma on 01/02/2014 01:36 pm
    From https://www.facebook.com/isroofficial:
    Quote
    Mission Status: GSLV-D5/GSAT-14
    We are all set for the launch, the launch rehearsal has been successfully completed a few hours back, all results are apparently normal.
    Title: Re: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: input~2 on 01/02/2014 09:41 pm
    GSLV at a glance (https://www.facebook.com/photo.php?fbid=1452855474937810&set=a.1448404935382864.1073741828.1448364408720250&type=1&theater)
    Title: Re: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: Danderman on 01/02/2014 09:43 pm
    GSLV at a glance (https://www.facebook.com/photo.php?fbid=1452855474937810&set=a.1448404935382864.1073741828.1448364408720250&type=1&theater)

    Apparently, the strapons carry the core stage for 48 seconds after the core burns out.

    Title: Re: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: input~2 on 01/02/2014 09:48 pm
    Quote
    300832 Z / DEC
    INDIAN OCEAN – BAY OF BENGAL (.) CHARTS 32 33 41 356 INT 71 INT 70 INT 72 INT
    706 (.) GSLV-D5-II ROCKET LAUNCHING SCHEDULED FROM LAUNCH PAD 13-43.2N 080-14.8E
    BETWEEN 1000 UTC AND 1330 UTC FROM 05 JAN TO 07 JAN 14
    2. DANGER AREAS ARE AS FOLLOWS
    (A) DANGER ZONE–1
    CIRCLE OF 15 NM AROUND THE LAUNCHER
    (B) DANGER ZONE –2
    (I) 11-15N 085-10E (II) 11-15N 086-55E
    (III) 12-45N 086-55E (IV) 12-45N 085-10E
    (C) DANGER ZONE –3
    (I) 10-20N 088-30E (II) 10-20N 090-30E
    (III) 11-50N 090-30E (IV) 11-50N 088-30E
    (D) DANGER ZONE – 4
    (I) 08-15N 095-00E (II) 08-15N 096-00E
    (III) 09-45N 096-00E (IV) 09-45N 095-00E
    3. CAUTION ADVISED
    4. CANCEL THIS MSG 071430 UTC JAN 14
    Title: Re: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: William Graham on 01/03/2014 12:01 am
    GSLV at a glance (https://www.facebook.com/photo.php?fbid=1452855474937810&set=a.1448404935382864.1073741828.1448364408720250&type=1&theater)

    Apparently, the strapons carry the core stage for 48 seconds after the core burns out.


    Normal for GSLV
    Title: Re: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: antriksh on 01/03/2014 01:45 am
    Quote
    Others included video imaging of lower shroud movement during various flight phases;

    Hope we get to see the live feed!!

    Read more at: http://indiatoday.intoday.in/story/gslv-rocket-launch-isro-gsat-14-india-cryogenic-engine/1/334073.html
    Title: Re: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: chota on 01/03/2014 02:53 am
    GSLV at a glance (https://www.facebook.com/photo.php?fbid=1452855474937810&set=a.1448404935382864.1073741828.1448364408720250&type=1&theater)

    Apparently, the strapons carry the core stage for 48 seconds after the core burns out.


    Normal for GSLV

    I presume the 4 L40 stages remain attached to the core solid booster for pitch and yaw control (using gimbal controls on L40).

    S139 in GSLV does seem to have SITVC control but is more for a backup if gimbal control on L40 fails. The L40 also has fins for aero dynamic stability.

    I think its better to see the 4 L40 + S139 as a "one single" clustered engine for propulsion.

    Of the 48 seconds difference between S139 burnout and first stage separation, you need to subtract 4 sec as L40 is lit at T-4 seconds before liftoff.

    ISRO might have felt that adding a jettison system on each of the 4 L40 might add to weight penalty and complexity. So it remains attached to the S139 stage for pitch and yaw control probably to handle the open loop first stage guidance and incorporates the day-of-launch wind biasing algorithm .

    I suspect also that the dip in propulsion power when S139 burnsout while L40 is still burning will in a small way help in the subsequent first stage separation where the stage 2 gases are vented out through the inter-stage thus avoiding the need for additional retro motors as in the case of PSLV

    What if S139 become may be S140 and burn-out of S139 and L40 timing are synced?
    Title: Re: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: antriksh on 01/03/2014 04:10 am


    I think its better to see the 4 L40 + S139 as a "one single" clustered engine for propulsion.


    Yes, ISRO considers 4 liquid boosters and the solid stage as a single first stage.
    Title: Re: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: chota on 01/03/2014 04:37 am
    On the launch pad. (https://twitter.com/ISROOFFICIAL/status/416922892329185280)
     (Attached large version of the same pic)

    In the VAB prior to MLP rollout (http://www.isro.org/gslv-d5/Imagegallery/launchvehicle_images/gslv-d5-13.jpg) ...
    Nice shot of the payload air-conditioning duct. I assume all these white wire-ties(?) (http://www.isro.org/gslv-d5/Imagegallery/launchvehicle_images/gslv-d5-9.jpg) are to hold this duct in place, during tanking, and cryo-filling etc?

    Transporting the cryo stage into the VAB (horizontally) (http://www.isro.org/ gslv-d5/Imagegallery/launchvehicle_images/gslv-d5-10.jpg) for stacking and integration..
    I'm asking again... but could somebody explain why the coldest stage is painted black? Sure, it may not be paint, and it may just be the colour of the insulation material, but what good insulators are coloured black?

    It is not a black paint but I guess its a "Multilayer Insulation blanket" wrapped manually. It came in all colors.

    For the first 4 GSLV flights, it was light grey in color. For the fifth flight, it was white in color and the last 2 and the current took the current black color.

    Title: Re: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: vyoma on 01/03/2014 11:02 am
    Doordarshan telecast and ISRO webcast start from 3:52 PM IST, Jan 5.

    Quote
    Live Telecast of the GSLV D5 launch on Doordarshan and Webcast through http://www.isro.gov.in/ (http://www.isro.gov.in/) will be available from 3:52 PM (IST) onwards on Sunday afternoon.
    We will keep you posted on this page and also on our official twitter handle https://twitter.com/isroofficial (https://twitter.com/isroofficial)

    edit by mod: i.e. from 1022UTC
    Title: Re: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: Danderman on 01/03/2014 03:15 pm

    I presume the 4 L40 stages remain attached to the core solid booster for pitch and yaw control (using gimbal controls on L40).


    The 4 L40 boosters remain attached to the core to provide thrust for the entire stack after the core burns out. For some reason, ISRO decided on a system where the core burns out 40 seconds before the strap-on boosters.

    Title: Re: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: abhishek on 01/03/2014 03:30 pm

    I presume the 4 L40 stages remain attached to the core solid booster for pitch and yaw control (using gimbal controls on L40).


    The 4 L40 boosters remain attached to the core to provide thrust for the entire stack after the core burns out. For some reason, ISRO decided on a system where the core burns out 40 seconds before the strap-on boosters.

    Isn't that a bad thing ? the 4 strap on boosters propelling an entire rocket with an emptied 20,000 kg first stage.

    I think GSLV is a flawed design and was basically build to test the Russian Cryogenic engine.
    Title: Re: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: baldusi on 01/03/2014 03:33 pm

    I presume the 4 L40 stages remain attached to the core solid booster for pitch and yaw control (using gimbal controls on L40).


    The 4 L40 boosters remain attached to the core to provide thrust for the entire stack after the core burns out. For some reason, ISRO decided on a system where the core burns out 40 seconds before the strap-on boosters.
    I understand that the reason is to reuse the PSLV first stage. The GSLV MkI/II was a short term solution for GTO until the MkIII was ready. Thus, they based it off the PSLV, and tried to do the minimum additions to get the desired performance. Thus, the rocket is not exactly very efficient, but it was done that way due to budget and schedule restrictions. Now, given all the failures, were attributed to the new elements, it was not a bad idea to use already developed parts with minimum mods.
    Title: Re: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: kanaka on 01/03/2014 11:13 pm

    I presume the 4 L40 stages remain attached to the core solid booster for pitch and yaw control (using gimbal controls on L40).


    The 4 L40 boosters remain attached to the core to provide thrust for the entire stack after the core burns out. For some reason, ISRO decided on a system where the core burns out 40 seconds before the strap-on boosters.

    Can we consider this opportunity as more a test for Indigenous Cryogenic Engine than the complete rocket itself? If Cryogenic Engine Succeeds then this can be incorporated into other rockets under development with minimal changes to suit the new rocket design. Might be ISRO thought to make utmost utilization of efforts and technology by adopting re usability where ever applicable  keeping the budget and schedule constraints in mind. If this is the case then we can see progressive elaboration through incremental developments in rocket technology. 
    Title: Re: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: isro-watch on 01/04/2014 05:01 am
    ISRO Website reports that the countdown has commenced for GSLV-D5 launch

    http://isro.org/gslv-d5/d5-updates.aspx
    Title: Re: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: Galactic Penguin SST on 01/04/2014 09:05 am
    Can anyone here confirms that all the photos and videos currently on the ISRO website are from the second launch attempt and not from the one last August? Thanks!
    Title: Re: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: Galactic Penguin SST on 01/04/2014 09:14 am
    Quote
    Dr. Radhakrishnan said: “We got a new S139 solid first stage. Its four liquid strap-on stages have a lot of avionics, so we refurbished them at Mahendragiri and Hindustan Aeronautics Ltd. We also made a new second stage. When the launch was called off in August, the liquid stage had to be drained of fuel and washed with much water. This might have affected the electronics systems, so we replaced them, too.”

    Quote
    More importantly, the fuel tank material has been changed, fully phasing out the traditional but corrosion-prone aluminium-zinc combine, called AFNOR 7020. The new alternative, aluminium-copper alloy called AA2219, is now the material for all PSLV and GSLV tanks.

    http://www.thehindu.com/news/national/will-2014-place-isro-in-cryo-club/article5527391.ece

    So let me get it straight - everything on the boosters, the first and second stages are completely new with respect to the rocket on the pad last August?
    Title: Re: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: Steven Pietrobon on 01/04/2014 09:22 am
    The core and second stage are new. The boosters were refurbished.
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: input~2 on 01/04/2014 10:19 am
    Webcast will be available on January 5 from 10:22 UTC on
    http://216.185.104.74/isro
    also on http://webcast.gov.in/live
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: AJA on 01/04/2014 04:23 pm
    L-40's have been filed with UH -25 (2150 IST). (https://twitter.com/ISROOFFICIAL/status/419503698125938688)
    The second stage GS-2 (whose predecessor leaked) was filled by 1800 IST - after prep commenced at 1148 IST (http://isro.gov.in/gslv-d5/d5-updates.aspx). (N2O4 completed by 1423 IST (https://twitter.com/ISROOFFICIAL/status/419391151930478592), UH25 started at 1618 IST (https://twitter.com/ISROOFFICIAL/status/419420096629469184))Seems a bit odd - a) given that it's so early, and that the last time round, they did the tanking ~7 hrs prior to launch IIRC b) It's taken ~6 hours to fill the second stage. I guess they deliberately slowed it up, and had leak checks periodically.


    Can anyone here confirms that all the photos and videos currently on the ISRO website are from the second launch attempt and not from the one last August? Thanks!


    The ones in my post earlier (http://forum.nasaspaceflight.com/index.php?topic=30160.msg1139839#msg1139839) are all from the January campaign, as are the pictures posted today... (It's a guess...given that these photos weren't posted for the previous launch campaign).

    Sure, it may not be paint, and it may just be the colour of the insulation material, but what good insulators are coloured black?
    It is not a black paint but I guess its a "Multilayer Insulation blanket" wrapped manually. It came in all colors.

    It strikes me now that quite a few of the shuttle's tiles were great insulators and they were black too. Do we know what insulating material they're using for the cryo-stage? Some carbon composite?
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: Launch Fan on 01/04/2014 05:02 pm
    Thanks for the coverage, but in summary, was this vehicle leaking and they rolled back, fixed and rolled back out again? That was the interim delay?
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: Terry Rocket on 01/04/2014 05:32 pm
    Did they replace the booster or just repair it?
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: Kryten on 01/04/2014 05:35 pm
    Did they replace the booster or just repair it?
    The stage that leaked was replaced with a new one made from an alloy less susceptible to cracking; the first stage is also new, and the boosters were refurbished.
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: Chris Bergin on 01/04/2014 07:10 pm
    And a reminder, we're going with this thread for this next attempt. A link to the first live coverage post will be added to the opening post.
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: chota on 01/04/2014 11:19 pm
    GSLV getting ready !!

    (https://fbcdn-sphotos-f-a.akamaihd.net/hphotos-ak-prn1/p403x403/1536470_1453571851532839_883470192_n.jpg)

    Photo Source (ISRO): https://www.facebook.com/isroofficial

    A new acoustic suppression system has come up on this launch pad(Behind the ISRO logo). This will be used for GSLV-MK3 launches

    Love it or hate it !!

    (https://fbcdn-sphotos-b-a.akamaihd.net/hphotos-ak-ash3/p320x320/1521280_1453064074916950_2060008338_n.jpg)


    Targeted orbit of GSLV-D5

    Perigee : 180 ± 5 km
    Apogee : 35975 ± 675 km
    Inclination : 19.3 ± 0.1 deg

    Today flight plan
    http://www.isro.org/gslv-d5/pdf/brochure.pdf
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: Chris Bergin on 01/04/2014 11:51 pm
    I've realigned and updated William's launch overview article:

    http://www.nasaspaceflight.com/2014/01/indian-gslv-launch-gsat-14-communications-satellite/
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: AJA on 01/05/2014 03:53 am
    L-40 N2O4 filling completed as of 2344 IST last night. (https://www.facebook.com/isroofficial/posts/1453540731535951)

    Preparations on for Cryo stage filling. (http://isro.gov.in/gslv-d5/d5-updates.aspx)


    LOX filling commenced @ ~1147 IST (https://twitter.com/ISROOFFICIAL/status/419714367316164608)

    GSLV getting ready !!

    That is a fantastic shot.

    A new acoustic suppression system has come up on this launch pad(Behind the ISRO logo). This will be used for GSLV-MK3 launches

    Interesting. A similar pic in the brochure has a white panel hosting the ISRO logo, so I guess they have changed it. Source/details?


    Also, looking at the EOC-EIRP diagrams for the Ku and the Extended C band transponders - does anyone know how the perimeter has come to be defined by straight edges for these two sets (6 transponders each)? The Ka band (going to be used for attenuation studies, 2 operating frequencies, one transponder each I think) zones of coverage are delineated by a more intuitive ~circle..


    Btw, here's a shot of the cryo-stage mounted in the diffuser at the LPSC Mahendragiri High Altitude Test Facility : https://twitter.com/ISROOFFICIAL/status/419135493884768256 (https://twitter.com/ISROOFFICIAL/status/419135493884768256)
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: hop on 01/05/2014 07:53 am
    Webcast information from https://twitter.com/ISROOFFICIAL/status/419702040948789248

    Quote
    Links for live webcast: 3:52 PM onwards today.http://webcast.isro.gov.in/  & http://www.24framesdigital.com/isro/webcast/050114/ … We will keep tweeting right here as well

    3:52 IST = 10:22 GMT

    Also reporting LH2 fueling has started https://twitter.com/ISROOFFICIAL/status/419748637162229760
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: Artyom. on 01/05/2014 08:49 am
    T-1 hour

    Quote
    ISRO ‏@ISROOFFICIAL
    Filling of Liquid Hydrogen (fuel) into the cryogenic stage of GSLV D5 completed.
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: Zaran on 01/05/2014 09:14 am
    Webcast is showing live images from mission control and of the pad but keeps cutting back to the bluescreen intermittently.
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: ss1_3 on 01/05/2014 09:17 am
    Watch it on National TV live Youtube channel:

    https://www.youtube.com/watch?v=Y7HIvfhoFHM
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: Artyom. on 01/05/2014 09:17 am
    ISRO webcast started  :) !
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: Zaran on 01/05/2014 09:21 am
    The ISRO Webcast, while lower video quality has English commentary along side the Indian for those wondering what is being talked about.
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: Artyom. on 01/05/2014 09:22 am
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: Zaran on 01/05/2014 09:26 am
    India Cryogenic stage being shown (second image)!
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: antriksh on 01/05/2014 09:29 am
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: Artyom. on 01/05/2014 09:32 am
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: Chris Bergin on 01/05/2014 09:33 am
    T-15 mins.
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: Artyom. on 01/05/2014 09:38 am
    T-10 mins.
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: Chris Bergin on 01/05/2014 09:42 am
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: cave_dweller on 01/05/2014 09:44 am
    T-5 mins
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: Chris Bergin on 01/05/2014 09:46 am
    T-180 seconds.
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: Chris Bergin on 01/05/2014 09:47 am
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: Chris Bergin on 01/05/2014 09:47 am
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: cave_dweller on 01/05/2014 09:49 am
    Lift Off!!!
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: Artyom. on 01/05/2014 09:49 am
    LAUNCH!!!
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: Chris Bergin on 01/05/2014 09:49 am
    LAUNCH!!
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: Chris Bergin on 01/05/2014 09:49 am
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: Chris Bergin on 01/05/2014 09:50 am
    Interesting camera angle, but nominal!
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: Chris Bergin on 01/05/2014 09:50 am
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: cave_dweller on 01/05/2014 09:51 am
    Stage 1 burn out!
    Stage 2 Ignited!!
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: Chris Bergin on 01/05/2014 09:51 am
    Staging! 1-2 Sep.
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: Artyom. on 01/05/2014 09:51 am
    Second stage of GSLV D5 ignited
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: Chris Bergin on 01/05/2014 09:52 am
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: Artyom. on 01/05/2014 09:52 am
    Second stage performance normal
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: Chris Bergin on 01/05/2014 09:52 am
    This GSLV is performing very well so far!

    Payload Fairing Sep.
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: cave_dweller on 01/05/2014 09:53 am
    Stage 2 Separated.
    ICE (Indian Cryogenic Engine) Ignited!!!
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: Zaran on 01/05/2014 09:53 am
    Third stage ignition confirmed!
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: Chris Bergin on 01/05/2014 09:54 am
    Staging. 2-3 Sep. On the Upper Stage.
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: Artyom. on 01/05/2014 09:54 am
    Cryogenic stage of GSLV D5 ignited!
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: antriksh on 01/05/2014 09:54 am
     ;D yeah!!
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: Chris Bergin on 01/05/2014 09:54 am
    Lots of excitement for that milestone and rightly so. Performance nominal on their own Upper Stage.
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: antriksh on 01/05/2014 09:55 am
    Normal Performance!!!!! ;D
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: Chris Bergin on 01/05/2014 09:55 am
    T+400 seconds. 100 seconds into the Upper Stage burn
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: cave_dweller on 01/05/2014 09:56 am
    400 Secs of flight.
    Flight path tracking predicted flight path
    Flight performance normal!!!
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: Chris Bergin on 01/05/2014 09:56 am
    Nice trajectory profile.
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: antriksh on 01/05/2014 09:56 am
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: antriksh on 01/05/2014 09:57 am
    Normal Performance !!!
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: antriksh on 01/05/2014 09:58 am
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: Chris Bergin on 01/05/2014 09:58 am
    Coming up on T+600 seconds.
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: cave_dweller on 01/05/2014 09:58 am
    600 Secs of flight.
    Performance Normal
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: Chris Bergin on 01/05/2014 10:05 am
    Now making the Ariane style final push uphill.
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: cave_dweller on 01/05/2014 10:05 am
    1000 secs of flight
    _____________________________
    Cryogenic Stage Shut OFF
    Vehicle Performance Normal
    Thrust Performance Profile Nominal
    Flight Acceleration Profile Nominal
    _____________________________

     ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: Artyom. on 01/05/2014 10:05 am
    Cryogenic stage burn out.
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: Chris Bergin on 01/05/2014 10:06 am
    There we go! S/C Sep.

    GSLV and a new upper stage - successful flight! Well done to all concerned :)
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: Artyom. on 01/05/2014 10:06 am
    GSAT-14 Separated!!!!
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: plutogno on 01/05/2014 10:06 am
    congrats to India! looking forward to Chandrayaan-2 now!
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: sanman on 01/05/2014 10:07 am
    Heard someone say both panels deployed (on GSAT-14)

    Great launch - performance seems to have been nominal
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: cave_dweller on 01/05/2014 10:07 am
    Satellite Injection!
    Satellite Panels Deployed

    Flight is SUCCESSFUL
    Landmark Achievement for India!
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: Artyom. on 01/05/2014 10:07 am
    "GSLV D5 mission successfully accomplished"
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: johnxx9 on 01/05/2014 10:10 am
    Success! A big step for the Indian Space program! Mastering cryogenic tech is the first step among the many ambitious ones that India will be looking to take!  :)
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: William Graham on 01/05/2014 10:11 am
    First successful GSLV launch in almost a decade. Congratulations to ISRO.
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: Chris Bergin on 01/05/2014 10:12 am
    William Graham's article updated for post launch.

    http://www.nasaspaceflight.com/2014/01/indian-gslv-launch-gsat-14-communications-satellite/
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: albatros68 on 01/05/2014 10:13 am
    Congrats to ISRO and its Cryogenic engine
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: isro-watch on 01/05/2014 10:13 am
    congratulations...What were the final parameters ?
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: Artyom. on 01/05/2014 10:15 am
    Quote
    ISRO ‏@ISROOFFICIAL
    GSLV D5 takes GSAT-14 to Geostationary Transfer Orbit and India into 'cryo club' !
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: Chris Bergin on 01/05/2014 10:15 am
    I think you can assume they are rather pleased about the mission ;)
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: Artyom. on 01/05/2014 10:23 am
    http://www.youtube.com/watch?v=811zi2_i7KE
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: hornbill2007 on 01/05/2014 10:26 am
    I think you can assume they are rather pleased about the mission ;)

    Speaks volumes about the importance of the project for ISRO!!
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: cave_dweller on 01/05/2014 10:27 am
    The naughty boy of ISRO GLSV finally behaves!!!

    Meticulous Injection.
    Perigee deviation from predicted position: 40 meters
    Apogee deviation from predicted position: 50 KMs

    Turbo Pump RPM Performance
    Predicted Performance: 40,000 RPM
    Actual Performance: 39,800 RPM

    Booster Turbo Pump RPM Performance
    Predicted Performance: 34500 RPM
    Actual Performance: 34553 RPM

    India becomes 6th nation to develop indigenous cryogenic technology!
    Onto GSLV MK-III, Chandrayaan-2 & Semi-Cryogenic Engine

    !!!!!Grand Success!!!!!
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: antriksh on 01/05/2014 10:27 am
    Cryo thrust change :

    7.5 to 9.5 to 8 and back to 7.5 tons!!!!
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: johnxx9 on 01/05/2014 10:29 am
    congratulations...What were the final parameters ?

    It was almost a textbook launch. The targeted apogee was 36000 km, the actual apogee is just 50km within this value. Even the achieved perigee is within 0.5% of the desired distance. 
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: hornbill2007 on 01/05/2014 10:41 am
    congratulations...What were the final parameters ?

    It was almost a textbook launch. The targeted apogee was 36000 km, the actual apogee is just 50km within this value. Even the achieved perigee is within 0.5% of the desired distance. 

    I remember that in the few successful GSLV launches using Russian cryo prior to this one the GTO achieved was well short of the intended one because the Russion cryo failed to provide requisite thrust. But today the cryo performed as required delivering the requisite thrust.
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: antriksh on 01/05/2014 11:02 am
    India has mastered the cryogenic staged combustion cycle!!! next stop is 2000 kn semi-cryo staged combustion engine.
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: Galactic Penguin SST on 01/05/2014 12:58 pm
    The launch as seen from a few kilometers away, all the way till core stage burn out:
    http://www.youtube.com/watch?v=3hJYAExJv9g
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: boldz on 01/05/2014 01:12 pm
    Hi...new here...The second stage seems to have ignited for a short time. Was it possible to remove the second stage altogether and use the cryogenic stage all the way.
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: input~2 on 01/05/2014 01:29 pm
    USSTRATCOM has catalogued a first object (presumably the 3rd stage)
    2014-001A/39498 in 160 x 35710 km x 19.41°

    (The target injection orbit for GSAT-14 was:
    perigee 180+/- 5 km
    apogee 35975 +/- 675 km
    inclination 19.3 +/- 0.1°)
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (1048UTC)
    Post by: vyoma on 01/05/2014 01:52 pm
    Amazing! Congrats to ISRO. I was at Sriharikota today to witness the historic launch. Electrifying excitement all over :) Looking forward to more successful GSLV launches.
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (1048UTC)
    Post by: Artyom. on 01/05/2014 01:56 pm
    Launch photo
    http://www.isro.org/gslv-d5/Imagegallery/launchvehicle.aspx (http://www.isro.org/gslv-d5/Imagegallery/launchvehicle.aspx)
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (1048UTC)
    Post by: Star One on 01/05/2014 02:10 pm
    Congratulations to all at ISRO on this successful launch.
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
    Post by: Phillip Clark on 01/05/2014 04:17 pm
    USSTRATCOM has catalogued a first object (presumably the 3rd stage)
    2014-001A/39498 in 160 x 35710 km x 19.41°
    (The target injection orbit for GSAT-14 was:
    perigee 180+/- 5 km
    apogee 35975 +/- 675 km
    inclination 19.3 +/- 0.1°)

    To actually compare the orbits for accuracy we need to know what "Earth model" ISRO is using compared with the one used by USSTRATCOM.
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (1048UTC)
    Post by: input~2 on 01/05/2014 05:05 pm
    Quote
    The GSLV-D5 placed the GSAT-14 communication satellite in an orbit with an apogee (nearest distance to earth) of 179 km, against a targeted 180 km with a plus or minus 5 km margin for error, and a perigee (furthest distance from earth) of 36,025 km against a target of 35,975 km with a 675 km margin of error.
    http://www.indianexpress.com/news/isros-mission-successful-gslv-d5-completes-flight-gsat14-satellite-separates/1215701/

    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (1048UTC)
    Post by: Adonis1 on 01/05/2014 05:17 pm
    http://www.youtube.com/watch?v=gvugEodJ5PQ&feature=youtu.be

    my uploaded video .
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (1048UTC)
    Post by: AJA on 01/05/2014 05:45 pm
    Superb launch :) Very enthusiastic celebrations in the control room for this one too :D

    Watch it on National TV live Youtube channel:

    This now links to the entire 1h:27m webcast
    https://www.youtube.com/watch?v=Y7HIvfhoFHM

    Does anyone know if a) they did have an onboard camera and b) if there was a live downlink of this engineering camera view (pointed at the shroud), or if it was received later? There was some mention of it up-thread.

    Amazing! Congrats to ISRO. I was at Sriharikota today to witness the historic launch. Electrifying excitement all over :) Looking forward to more successful GSLV launches.

    Were you in SHAR? Is there an ISRO designated viewing area for the public - either inside or outside? Or is everyone scampering to get to the terrace of the tallest building nearest to the complex? Did you make it a point to tell them to start selling tickets for tours - for the revenue generation (small though it may be) and outreach? :D
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (1048UTC)
    Post by: isro-watch on 01/05/2014 07:12 pm
    Superb launch :) Very enthusiastic celebrations in the control room for this one too :D

    Were you in SHAR? Is there an ISRO designated viewing area for the public - either inside or outside? Or is everyone scampering to get to the terrace of the tallest building nearest to the complex? Did you make it a point to tell them to start selling tickets for tours - for the revenue generation (small though it may be) and outreach? :D


    ISRO does have a theater/hall to display the launch. The launch is projected onto a screen live from the MCC. This has been for years. The tickets (known as entry pass) are not sold and rather given on a first come first serve basis to employees and their families/relatives..etc

    There is also a walky-talky system which announces critical launch event from the MCC. This system is setup in many public areas especially in residential colonies(I am not sure of how many of these are setup)

    Apart from these, people generally crowd places like water tanks, tall buildings etc in SHAR and also in the nearby town Sullurpeta
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (1048UTC)
    Post by: edkyle99 on 01/05/2014 08:46 pm
    The CE-7.5 indigenous cryogenic upper stage engine has a claimed 454 second specific impulse, better than the Ariane 5 ESC-A stage HM7B engine, better than the Atlas 5 Centaur RL10A-4-1 engine, better than the Long March YF75 engine, better than Japan's LE-5B-2 engine, and so on.   

     - Ed Kyle
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (1048UTC)
    Post by: sdsds on 01/05/2014 09:28 pm
    USSTRATCOM has catalogued a first object (presumably the 3rd stage)
    2014-001A/39498 in 160 x 35710 km x 19.41°

    (The target injection orbit for GSAT-14 was:
    perigee 180+/- 5 km
    apogee 35975 +/- 675 km
    inclination 19.3 +/- 0.1°)

    Nominally the target orbit was "super-synchronous" with apogee higher than GEO; the achieved orbit was just slightly lower than GEO.

    My pessimistic calculation method shows the target had a delta-v to GEO of less than 1,654 m/s; the actual has a delta-v to GEO of less than 1,662 m/s.

    YMMV.

    (Congrats to all involved; particularly those whose work made the cryogenic third stage a success!)
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (1048UTC)
    Post by: kanaka on 01/05/2014 10:58 pm
    Superb launch :) Very enthusiastic celebrations in the control room for this one too :D

    Were you in SHAR? Is there an ISRO designated viewing area for the public - either inside or outside? Or is everyone scampering to get to the terrace of the tallest building nearest to the complex? Did you make it a point to tell them to start selling tickets for tours - for the revenue generation (small though it may be) and outreach? :D


    ISRO does have a theater/hall to display the launch. The launch is projected onto a screen live from the MCC. This has been for years. The tickets (known as entry pass) are not sold and rather given on a first come first serve basis to employees and their families/relatives..etc

    There is also a walky-talky system which announces critical launch event from the MCC. This system is setup in many public areas especially in residential colonies(I am not sure of how many of these are setup)

    Apart from these, people generally crowd places like water tanks, tall buildings etc in SHAR and also in the nearby town Sullurpeta



    Apart from these outer world filled with young scientists, especially contributing to this section might have glued to television sets to cross check their own calculations. Its not only a success for ISRO or INDIA but also success story of guys residing in this section who have been virtually and parallel working on calculations and doubts. Thank You and congrats to all of you.
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (1048UTC)
    Post by: antriksh on 01/06/2014 01:36 am
    The CE-7.5 indigenous cryogenic upper stage engine has a claimed 454 second specific impulse, better than the Ariane 5 ESC-A stage HM7B engine, better than the Atlas 5 Centaur RL10A-4-1 engine, better than the Long March YF75 engine, better than Japan's LE-5B-2 engine, and so on.   

     - Ed Kyle

    may be because CE7.5 is staged combustion and others are either gas generator or expander cycles
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (1048UTC)
    Post by: seshagirib on 01/06/2014 04:37 am
    Question:

    Why was the CUS/ICE restart capability not tested by restarting the engine after releasing the S/C ?

    Can this still be done, or is it too late to try it?


    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (1048UTC)
    Post by: Lars_J on 01/06/2014 04:48 am
    They keep referring to the cryogenic stage... I assume this is a HydroLox stage?
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (1048UTC)
    Post by: input~2 on 01/06/2014 05:03 am
    Nominally the target orbit was "super-synchronous" with apogee higher than GEO; the achieved orbit was just slightly lower than GEO.
    The target orbit was not super synchronous.
    The achieved orbit is what it was intended to be.
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (1048UTC)
    Post by: cave_dweller on 01/06/2014 05:52 am
    They keep referring to the cryogenic stage... I assume this is a HydroLox stage?

    Aren't they both the same?

    Cyrogenic because Hydrogen and Oxygen need to be liquified at cryogenic temperatures (below −150 °C) so they can deliver the required mass flow rate.


    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (1048UTC)
    Post by: input~2 on 01/06/2014 07:15 am
    New observations from USSTRATCOM

    Epoch: January 5 at 1630UTC (about 5.5 hours after S/C separation)

    Object A which could be the spacecraft:
    2014-001A/39498 in 183 x 35756 km x 19.40°

    Object B which could be GSLV 3rd stage:
    2014-001B/39499 in 180 x 35623 km x 19.44°
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (1048UTC)
    Post by: vyoma on 01/06/2014 08:42 am
    GSAT-14 first orbit raising operation successfully completed.
    Quote
    The first orbit raising operation of GSAT-14 is planned at 0758 hrs IST on January 6, 2014. The remaining two orbit raising operations are planned on January 7 and 9, 2014 to place the satellite in geostationary orbit.
    http://isro.gov.in/pressrelease/scripts/pressreleasein.aspx?Jan06_2014


    By the way, ISRO GSLV D5 happens to be first orbital launch of 2014 :)
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (1048UTC)
    Post by: input~2 on 01/06/2014 09:01 am
    GSAT-14 first orbit raising operation successfully completed.

    Confirmed via ISRO post launch update:
    "First orbit raising operation of GSAT-14 is successfully completed by firing the Apogee Motor for 3,134 seconds on Jan 06, 2014. Realised orbit is 8,966 km (Perigee) by 35,744 km (Apogee). "

    http://isro.gov.in/gslv-d5/d5-post-updates.aspx
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (1048UTC)
    Post by: AJA on 01/06/2014 09:12 am
    The spacecraft's LAM performed a 3134 second burn this morning (Jan 6) at 0758 IST (http://isro.gov.in/pressrelease/scripts/pressreleasein.aspx?Jan06_2014) raising GSAT-14's orbit to 8843 km x 35745 km, with an inclination of 7.44 deg. (https://www.facebook.com/isroofficial/posts/1454026884820669) Two manoeuvres remain (https://twitter.com/ISROOFFICIAL/status/419810313446256641), one scheduled tomorrow (Jan 7), and another on Jan 9.


    may be because CE7.5 is staged combustion and others are either gas generator or expander cycles
    Asking again: would you provide your source? (http://forum.nasaspaceflight.com/index.php?topic=15187.msg1143127#msg1143127)
    EDIT: Found a source (http://forum.nasaspaceflight.com/index.php?topic=15187.msg1143363#msg1143363)

    ISRO does have a theater/hall to display the launch. The launch is projected onto a screen live from the MCC. This has been for years. The tickets (known as entry pass) are not sold and rather given on a first come first serve basis to employees and their families/relatives..etc

    There is also a walky-talky system which announces critical launch event from the MCC. This system is setup in many public areas especially in residential colonies(I am not sure of how many of these are setup)

    Apart from these, people generally crowd places like water tanks, tall buildings etc in SHAR and also in the nearby town Sullurpeta

    There's nothing ISRO specific about that theatre/hall. Any movie-theater in Sullurpeta (or anyone in any of those residential colonies) with a digital projector, a good sound system and an internet connection would be able to stream it - with the ISRO commentary. You say it's for family members/relatives of ISRO employees (as opposed to interested public) -- which is an outreach opportunity going abegging. Preaching to the choir and all that.

    I'm talking about tours of SDSC facilities for the general public, or a "closest"/"official" viewing area. With ISRO people around to talk to them. Make a day long event of it - like the Tweetups: public lectures/an exhibition area. I'm sure they've thought about it. I'm wondering why they haven't acted on it. If someone says "security", I might become livid.

    Low scientific literacy, among society as well as policy makers elected by such a society - has ALWAYS been, and still is THE security threat - to socio-economic prosperity, and consequently to life and property.
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (1048UTC)
    Post by: vyoma on 01/07/2014 09:23 am
    http://isro.gov.in/gslv-d5/d5-post-updates.aspx
    Quote
    Jan 07, 2014
    Second orbit raising operation of GSAT-14 is successfully completed by firing the Apogee Motor for 2,629 seconds on Jan 07, 2014. Realised orbit is 32,160 km (Perigee) by 35,745 km (Apogee) with an inclination of 0.6 deg.

    One more is planned on Jan 9th.
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (1048UTC)
    Post by: input~2 on 01/07/2014 01:01 pm
    I have moved posts not directly linked to this launch to the discussion thread
    GSLV D5 (MkII) & cryo stage discussion thread (http://forum.nasaspaceflight.com/index.php?topic=33622.0)
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (1048UTC)
    Post by: input~2 on 01/08/2014 12:02 pm
    "First orbit raising operation of GSAT-14 is successfully completed by firing the Apogee Motor for 3,134 seconds on Jan 06, 2014. Realised orbit is 8,966 km (Perigee) by 35,744 km (Apogee). "

    http://isro.gov.in/gslv-d5/d5-post-updates.aspx
    Confirming this, USSTRATCOM has tracked the satellite, after the first orbit raising maneuver, in the following orbit:
    2014-001A/39498 in 8943 x 35767 km x 7.60° (epoch Jan 6, 1401UTC)
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (1048UTC)
    Post by: vyoma on 01/09/2014 04:48 am
    From https://twitter.com/ISROOFFICIAL:
    Quote
    The Third Orbit Raising Maneuver of GSAT-14,successfully completed. Initial data:35,462 km Perigee/35, 741 km Apogee/0.25 degree inclination
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (1048UTC)
    Post by: input~2 on 01/09/2014 07:09 am
    Quote
    ISRO@ISROOFFICIAL   7 Jan  The MEASURED orbital parameters after the second Orbit raising maneuver is 32,544 km (Perigee) by 35,742 km (Apogee); 0.6 degree inclination
    Confirming this, USSTRATCOM has tracked the satellite, after the second orbit raising maneuver, in the following orbit:
    2014-001A/39498 in 32544 x 35741 km x 0.67° (epoch Jan 7, 0609UTC)
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (1048UTC)
    Post by: input~2 on 01/09/2014 04:26 pm
    Quote from: ISRO Facebook
    Mission Status: GSLV-D5/GSAT-14 mission:
     
     All orbit raising maneuvers for GSAT-14 satellite have been successfully completed. Both the reflectors of the satellite have been deployed. Satellite has been put under the three axes stabilized mode. The satellite is slowly being drifted to its designated orbital slot of 74 deg E. It will reach there on January 18, 2014 ...
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (1048UTC)
    Post by: vyoma on 01/11/2014 05:18 am
    GSLV D5 pic taken from an airplane, at an altitude of 20,000 ft:
    (https://pbs.twimg.com/media/Bdmrzv7CEAAK2rU.jpg)

    Source: https://twitter.com/Mangalyaan1/status/421556945653207040/photo/1
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (1048UTC)
    Post by: ss1_3 on 01/17/2014 06:19 pm
    Nice article on geostationary orbit supplemented with pictures and simulation to explain GSLV/GSAT trajectory:

    http://www.planetary.org/blogs/jason-davis/20140116-how-to-get-a-satellite-to-gto.html
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (1048UTC)
    Post by: ss1_3 on 01/18/2014 04:55 pm
    Final station acquisition manoeuvre completed. GSAT-14 placed in designated orbit.

    http://www.isro.org/gslv-d5/d5-post-updates.aspx

    http://n2yo.com/?s=39498

    To be commissioned by 5th Feb:

    http://www.thehindu.com/news/national/gsat14-reaches-its-final-geostationary-home/article5591436.ece
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (1048UTC)
    Post by: ss1_3 on 02/01/2014 05:32 am
    ISRO chief reflects on the success of GSLV, says that the payload injection was so precise that satellite could save some fuel for orbit correction, thereby gaining extra 1.5 yr life.

    https://www.youtube.com/watch?v=8W11BmIymAA
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (1048UTC)
    Post by: johnxx9 on 02/03/2014 06:28 pm
    ISRO chief reflects on the success of GSLV, says that the payload injection was so precise that satellite could save some fuel for orbit correction, thereby gaining extra 1.5 yr life.

    https://www.youtube.com/watch?v=8W11BmIymAA

    The politician says something about Kulasekarapattinam at the end. I've heard ISRO is considering this location seriously for the 2nd spaceport.
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (1048UTC)
    Post by: vyoma on 02/04/2014 12:35 am
    The politician says something about Kulasekarapattinam at the end. I've heard ISRO is considering this location seriously for the 2nd spaceport.

    Here's a snippet from that interview. It seems it's still under "review" and not confirmed yet:
    Quote
    Meanwhile, minister of state in Prime Minister's Office V Narayanasamy said on Friday that the third rocket launching pad is being considered in Kulasekaranpattinam of Tuticorin district by the central government. Talking to reporters at Mahendragiri, the minister said that there has been a demand for setting up the launching pad in Kulasekaranpattinam, as it is found to be a vantage point.
    http://articles.timesofindia.indiatimes.com/2014-02-01/science/46897203_1_mahendragiri-vikram-sarabhai-space-centre-gslv
    Title: Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (1048UTC)
    Post by: vyoma on 02/08/2016 02:24 pm
    Attaching GSLV Mk2 D5 brochure by VSSC. This is more detailed than that of ISRO.

    (Thanks to Ohsin, /r/isro)



    Quote
    The Cryogenic Engine develops a nominal thrust of 73.6 kN (vacuum) with a specific impulse of 452 seconds. The engine works on Stage Combustion Cycle in the pump-fed mode with an integrated turbopump running at around 40,000 rpm. The steering engine with the thrust of 2.2 kN provides three-axis control of the vehicle during thrusting phase. During coast phase, the OSS provides the required control to the vehicle. The unique feature of this engine is the closed loop control of both thrust and mixture rati os, which ensures optimum propellant management during the mission. The overall stage length is 8469 mm and the stage dry mass is 2548 kg.