Author Topic: GSAT 11 satellite  (Read 10342 times)

Offline worldtimedate

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Re: GSAT 11 satellite
« Reply #20 on: 08/11/2018 08:27 pm »
So, the communication loss problem of the GSAT-6A has got to do with the deployment of the solar panel

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GSAT-11 had the same set of power system configuration that two older satellites had. RISAT-1 died prematurely and GSAT-6A lost communication contact soon after launch on March 29 because of suspected power system failure, harnesses etc...

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Checks found that the provision or “margin” for the deployment of the solar panel was much smaller than was required. “Had it gone in that configuration, the panel [which generates power for the 15-year life] would not have deployed in space. The satellite would have been a failure. We had a chance to improve a major system. We are also confident that the failure issue has been overcome.”

Source : We averted a possible debacle: ISRO chairman
« Last Edit: 10/09/2018 05:59 am by worldtimedate »

Offline worldtimedate

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Re: GSAT 11 satellite
« Reply #21 on: 10/09/2018 05:58 am »
The elephant in Isro's room: the inside story of jumbo satellite's recall

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The Isro decision to bring the satellite back was then attributed to prudent precaution, especially since the space agency had lost contact with another satellite - the GSAT6A - on April 1. Documents now available with The Telegraph have thrown up new information and offered an insight into what transpired at two meetings in April, following which the decision to bring the satellite was finalised at another level. The Standing Spacecraft Authorisation Board had met on April 2 and April 16, including over video conference that linked up officials and project teams at several Isro facilities. By April 24, word was out that GSAT11 was being recalled.

edit/gongora: excessive quoting of news article trimmed
edit/gongora: "news article" may be too kind, it's more conspiracy theory
« Last Edit: 10/09/2018 03:15 pm by gongora »

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Offline Jajar

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Re: GSAT 11 satellite
« Reply #23 on: 10/30/2018 11:00 am »
Brilliant! This would be a HUGE boost as far as ISRO is concerned. When would launch take place ? 1st half of December ?

Online eeergo

Re: GSAT 11 satellite
« Reply #24 on: 10/30/2018 11:18 am »
Brilliant! This would be a HUGE boost as far as ISRO is concerned. When would launch take place ? 1st half of December ?

Further updates now that the satellite's woes appear to be over should be carried over to the launch thread: https://forum.nasaspaceflight.com/index.php?topic=46430.0


There you can see the launch date has been set for a while now on December 4th.
« Last Edit: 10/30/2018 11:19 am by eeergo »
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Offline Jajar

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Re: GSAT 11 satellite
« Reply #25 on: 11/22/2018 11:41 am »
Guys any time set for the December 4th launch of Gsat-11 ?

Offline ZachS09

Re: GSAT 11 satellite
« Reply #26 on: 11/22/2018 02:56 pm »
Guys any time set for the December 4th launch of Gsat-11 ?

Right now, the launch time for GSat 11 and its co-passenger is 21:34 UTC.
Because the Falcon Heavy Test Flight was successful, it has inspired thousands of people to consider changing the future of space travel.

Offline worldtimedate

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Re: GSAT 11 satellite
« Reply #27 on: 11/26/2018 06:20 am »
GSAT-11 and along with its co-passenger will be launched by Ariane-5 on December 5th, according to the following report by the TimesOfIndia

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Soon after the HySIS launch on November 29, Isro will shift its eye to the European spaceport as its heaviest commercial satellite Gsat-11 weighing 5.7 tonnes will be launched from French Guiana on December 5 (December 4 evening according to Indian standard time). The high-throughput satellite, which carries 40 transponders in the Ku-band and Ka-band frequencies, is capable of "providing high bandwidth connectivity" with up to 14 gigabit per second (GBPS) data transfer speed

Source : Isro to launch hyperspectral imaging sat with 30 foreign satellites on Nov 29
« Last Edit: 11/26/2018 06:23 am by worldtimedate »

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Re: GSAT 11 satellite
« Reply #28 on: 11/26/2018 08:38 am »
From the Arianespace launch schedule thread:

VA246 is currently planned for 4th of December at 17:37 local with a 1h16min window
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Offline TheVarun

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Re: GSAT 11 satellite
« Reply #29 on: 11/27/2018 03:43 pm »
https://www.isro.gov.in/gsat-11-mission/gsat-11-press-kit

ISRO has a small write up about the upcoming GSAT-11 launch. What was immediately striking was the weight of the satellite- 5854kg, more than 140kg heavier than originally stated.

Online russianhalo117

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Re: GSAT 11 satellite
« Reply #30 on: 11/27/2018 05:30 pm »
https://www.isro.gov.in/gsat-11-mission/gsat-11-press-kit

ISRO has a small write up about the upcoming GSAT-11 launch. What was immediately striking was the weight of the satellite- 5854kg, more than 140kg heavier than originally stated.
Additional prop most likely

Offline Jajar

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Re: GSAT 11 satellite
« Reply #31 on: 11/29/2018 10:10 am »
Folks, is it my understanding that after GSAT-11 is launched in early December, the next satellite would be GSAT-31, by January end 2019 ?

Offline maint1234

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Re: GSAT 11 satellite
« Reply #32 on: 11/29/2018 11:29 am »
Folks, is it my understanding that after GSAT-11 is launched in early December, the next satellite would be GSAT-31, by January end 2019 ?
No. He said another domestic launch in 3 weeks.

Offline worldtimedate

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Re: GSAT 11 satellite
« Reply #33 on: 12/02/2018 06:22 am »
Today's launch readiness review has cleared Ariane5 for its December 4 liftoff with GSAT-11 and GEO-KOMPSAT-2A. The launch will be Arianespace's 10th so far in 2018, and the sixth this year using a heavy-lift, tweed by ArianeSpace CEO

https://twitter.com/arianespaceceo/status/1068557586159538186?p=v

Offline sanman

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Re: GSAT 11 satellite
« Reply #34 on: 12/04/2018 12:17 pm »
ISRO's curtain-raiser video is up for the GSAT-11 mission:

https://www.isro.gov.in/gsat-11-mission/gsat-11-curtain-raiser-video-english

Offline TheVarun

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Re: GSAT 11 satellite
« Reply #35 on: 12/04/2018 06:11 pm »
  Launch must be a few hours away, hoping everything goes well!  I wonder if the GSAT-11 has the same 440N LAM, or a new more powerful LAM. It is certain that the Chandrayaan-2 will have a 800N engine.

Offline worldtimedate

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Re: GSAT 11 satellite
« Reply #36 on: 12/04/2018 07:20 pm »
Arianespace Flight VA246 - GSAT-11 - ISRO



« Last Edit: 12/04/2018 07:20 pm by worldtimedate »

Offline worldtimedate

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Re: GSAT 11 satellite
« Reply #37 on: 12/04/2018 07:27 pm »
Live Webcast has started.

Arianespace Flight VA246– GSAT-11 and GEO-KOMPSAT-2A (EN)


Offline Jajar

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Re: GSAT 11 satellite
« Reply #38 on: 12/06/2018 04:33 am »
Guys, no news of the orbit raising which normally ISRO communicates. Hope the satellite is in good health ?

Offline maint1234

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Re: GSAT 11 satellite
« Reply #39 on: 12/06/2018 11:35 am »
Guys, no news of the orbit raising which normally ISRO communicates. Hope the satellite is in good health ?
N2y0 site not showing anything.
For comparison the GSAT 15 was launched at 10 pm on the 10th and the first orbit raising was done at approx 11.30 pm on the 11th. Around 24 hrs after launch.
This was launched at 10 am IST on the 5th, so about time some news came.
Edit- as per communique it will be in geo by end of month? So long.?
« Last Edit: 12/06/2018 11:42 am by maint1234 »

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