LIVE: GSLV F05, INSAT 3DR, SLP, September 8, 2016 (11:20 UTC)

[sanjaykumar]

http://isro.gov.in/launcher/gslv-f05-insat-3dr

Second Stage (GS2) N2O4 filling completed by 13:30 hr IST. Preparations for Second Stage (GS2) UH25 filling are under progress

Second Stage (GS2) UH25 filling under progress

Second Stage (GS2) UH25 filling completed by 17:40 hr IST

[russianhalo117]

http://www.isro.gov.in/update/05-sep-2016/mission-readiness-review-mrr-committee-and-launch-authorization-board-lab-have


Mission Readiness Review (MRR) committee and Launch Authorization Board (LAB) have cleared the 29 hr countdown starting at 11.10 hr IST on Wednsday,September 7, 2016 and the launch of GSLV-F05/INSAT-3DR Mission for Thursday , September 8, 2016 at 16.10 hr

IIRC , PSLV coutdown = 48 hrs.

Count down of GSLV (~29 hrs ) << PSLV count down (~48 hrs).

Is this because the GSLV has one less stage ?

partly do to GSLV being a newer launcher amongst other reasons

[Chris Bergin]

Just to check, this is the first GSLV since the GSAT-6 launch a year ago?

Oh and moved for live coverage.

[edkyle99]

Just to check, this is the first GSLV since the GSAT-6 launch a year ago?

Oh and moved for live coverage.

Yes.

Here are Gunter's and my GSLV logs.
http://space.skyrocket.de/doc_lau/gslv.htm
http://www.spacelaunchreport.com/gslv.html#gslvlog

 - Ed Kyle

[Stan Black]

Just to check, this is the first GSLV since the GSAT-6 launch a year ago?

Oh and moved for live coverage.

Yes.

Here are Gunter's and my GSLV logs.
http://space.skyrocket.de/doc_lau/gslv.htm
http://www.spacelaunchreport.com/gslv.html#gslvlog

 - Ed Kyle

There was also an attempt to launch a GSLV in August 2013:-

The launch attempt of GSLV-D5 on August 19, 2013, was aborted due to a leak observed in the UH25 fuel system of the Liquid Second Stage (GS2) during the final phase of the countdown at 1:30 hrs before lift-off (T0). The Failure analysis board (FAB) concluded that a crack, attributed to Stress Corrosion Cracking (SCC), in the parent metal region of UH25 tank (material: Aluminium alloy AA7020) was the cause for the leak during the preflight pressurization of tank at T0-1:47 hr. Based on the impact assessment of the UH25 spillage on the vehicle systems, the GSLV-D5 vehicle for the next mission was prepared with new stages of GS2, L40 and GS1 (including core base shroud, interstages IS1/2V and IS1/2M). The Cryo stage, Payload fairing, Equipment bay and the GSAT-14 spacecraft were preserved and reused.

http://www.vssc.gov.in/VSSC_V4/images/Launchers_Brochures/GSLV-D5GSAT-14MISSION.pdf

[sanjaykumar]

http://isro.gov.in/update/07-sep-2016/uh25-filling-four-l40-strap-stages-completed-2100hr-ist
UH25 filling into four L40 Strap-On Stages completed by 21:00hr IST

[William Graham]

There was also an attempt to launch a GSLV in August 2013:

That would normally be classed as a scrub rather than an unsuccessful launch attempt although as you quoted they changed most of the rocket before it successfully launched in January 2014.


If this launch is successful it will be the first time the GSLV has completed three consecutive launches without a failure.

[sanman]

I used to hope that GSLV would go on to become as successful a workhorse as PSLV - but now I just hope that ISRO moves past it and keeps on iteratively improving LVM3 to better and better platforms, like an HLV

[vyoma]

Sep 08, 2016
Real Time System simulation checks Completed by 08:15 hr IST. Countdown is progressing

Sep 08, 2016
N2O4 filling into four L40 Strap-On Stages completed by 03:00 hr IST

[vineethgk]

I used to hope that GSLV would go on to become as successful a workhorse as PSLV - but now I just hope that ISRO moves past it and keeps on iteratively improving LVM3 to better and better platforms, like an HLV

I like to see GSLV more as a test bed where ISRO really learnt the trade of rocket design. All the difficulties they encountered in the realization of the cryogenic upper stage (and a staged combustion cycle one at that ! ) and the liquid strapons would have given them a rock-solid base and confidence in growing towards LVM3 and ULV.

[isro-watch]

Very true, I think, GSLV-MKII used as a test-bed, most probably will be discontinued and replaced with LVM3 and versions of ULV/HLV

[tehwkd]

One of the webcasts:

[tehwkd]

another:

[Steven Pietrobon]

Livestream is starting soon. The time shown in the frame grab is my local time.

[tehwkd]

40min delay https://www.reddit.com/r/ISRO/comments/50s0un/gslvf05_insat3dr_mission_updates_and_discussion/d7e029d

[seshagirib]

This one says streaming in about 20mins:

[seshagirib]

Looks like launch delay by about 40mins.

[tehwkd]

@isro announces a 40 minute delay in launch of GSLV now lift off at 4.50 pm, Cryogenic fuel filling led to delays. Countdown has resumed.

https://twitter.com/pallavabagla/status/773827023651217410

[seshagirib]

Launch of GSLV-F05 carrying INSAT-3DR, an advanced weather satellite, powered by indigenous delayed roughly 40 minutes as scientists are rechecking observations made during propellant filling

source: http://timesofindia.indiatimes.com/home/science/isro-gslv-launch/liveblog/54168997.cms

[worldtimedate]

10 minute delay in launching the satellite.

Launch is rescheduled to 16:50 hr IST Countdown is progressing normally

Source :
Launch is rescheduled to 16:50 hr IST Countdown is progressing normally

worldtimedate [ http://www.world-timedate.com/ ]