Author Topic: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (1048UTC)  (Read 178787 times)

Offline Star One

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Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (1048UTC)
« Reply #260 on: 01/05/2014 02:10 pm »
Congratulations to all at ISRO on this successful launch.

Offline Phillip Clark

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Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (ETD 1048UTC)
« Reply #261 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.
I've always been crazy but it's kept me from going insane - WJ.

Offline input~2

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Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (1048UTC)
« Reply #262 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/

« Last Edit: 01/05/2014 06:31 pm by input~2 »

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Offline AJA

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Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (1048UTC)
« Reply #264 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


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

Offline isro-watch

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Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (1048UTC)
« Reply #265 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
« Last Edit: 01/05/2014 07:14 pm by isro-watch »

Online edkyle99

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Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (1048UTC)
« Reply #266 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

Offline sdsds

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Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (1048UTC)
« Reply #267 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!)
« Last Edit: 01/06/2014 05:19 pm by sdsds »
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Offline kanaka

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Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (1048UTC)
« Reply #268 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.

Offline antriksh

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Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (1048UTC)
« Reply #269 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
Nasadiya Sukta:
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Offline seshagirib

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Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (1048UTC)
« Reply #270 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?


astronaut on space ship earth

Offline Lars_J

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Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (1048UTC)
« Reply #271 on: 01/06/2014 04:48 am »
They keep referring to the cryogenic stage... I assume this is a HydroLox stage?

Offline input~2

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Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (1048UTC)
« Reply #272 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.

Offline cave_dweller

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Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (1048UTC)
« Reply #273 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.



Offline input~2

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Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (1048UTC)
« Reply #274 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°

Offline vyoma

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Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (1048UTC)
« Reply #275 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 :)

Offline input~2

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Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (1048UTC)
« Reply #276 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

Offline AJA

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Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (1048UTC)
« Reply #277 on: 01/06/2014 09:12 am »
The spacecraft's LAM performed a 3134 second burn this morning (Jan 6) at 0758 IST raising GSAT-14's orbit to 8843 km x 35745 km, with an inclination of 7.44 deg. Two manoeuvres remain, 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?
EDIT: Found a source

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.
« Last Edit: 01/06/2014 11:21 am by AJA »

Offline vyoma

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Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (1048UTC)
« Reply #278 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.

Offline input~2

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Re: LIVE: GSLV D5 (MkII) GSAT-14, January 5, 2014 (1048UTC)
« Reply #279 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

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