Author Topic: GSAT 11 satellite  (Read 9067 times)

Offline seshagirib

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Re: GSAT 11 satellite
« Reply #40 on: 12/06/2018 12:36 PM »
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.?

I am guessing, that they will  wait until the satellite is visible to MCF  at Hassan, when it is at Apogee, to issues the boost orbit command.

Offline Jajar

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Re: GSAT 11 satellite
« Reply #41 on: 12/08/2018 06:35 AM »
Still no news ? 🤔🤔🤔

Offline maint1234

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Re: GSAT 11 satellite
« Reply #42 on: 12/08/2018 06:41 AM »
Still no news ? 🤔🤔🤔

From n2yo - seems 1st firing was OK.
"NORAD ID: 43824 
Int'l Code: 2018-100B 
Perigee: 13,657.8 km 
Apogee: 35,799.1 km 
Inclination: 1.0 ° 
Period: 909.7 minutes 
Semi major axis: 31099 km 
RCS: Unknown 
Launch date: December 4, 2018
Source: India (IND)
Launch site: FRENCH GUIANA (FRGUI) "

Don't know why isro has not tweeted.

Offline srikanthr124

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Re: GSAT 11 satellite
« Reply #43 on: 12/08/2018 02:12 PM »
I think they wanted to keep it low profile until final orbit raising maneuver is successfully completed.They may don't want the mainstream media to pickup these orbit raising  maneuver news and compare it with the failed one and create unnecessary fear and negative PR ....

Offline wasu

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Re: GSAT 11 satellite
« Reply #44 on: 12/08/2018 04:54 PM »
https://www.isro.gov.in/update/08-dec-2018/orbit-raising-manoeuvres-have-been-performed-gsat-11

After the successful launch of GSAT-11 into a Geosynchronous Transfer Orbit by Ariane 5 VA246 vehicle on December 05, 2018, three orbit raising manoeuvres have been performed by firing the satellite’s onboard propulsion system for a cumulative duration of more than four hours.  Consequently, the orbit of GSAT-11 with a perigee (nearest point to earth) of 32,657 km and an apogee (farthest point to earth) of 35,850 km, is very close to its designated Orbit.  One more manoeuvre will be performed tomorrow (December 09, 2018) to achieve the operational circular geostationary orbit of 35,786 km.

Offline worldtimedate

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Re: GSAT 11 satellite
« Reply #45 on: 12/08/2018 08:26 PM »
Tracking GSAT 11 through n2yo :
https://www.n2yo.com/satellite/?s=43824

Offline worldtimedate

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Re: GSAT 11 satellite
« Reply #46 on: 12/09/2018 11:21 PM »
Next, GSAT-11 awaits 200 crore ground system

It is really a matter of great disappointment that the ground system needed to use the GSAT 11 satellite will be set up by external agencies, maintained and operated by them as well. Isn’t there any Indian company that is capable of doint all these ?

Quote
Now that GSAT-11, the third and latest Internet-boosting communication satellite, is up in space, the Indian Space Research Organisation (ISRO) says it is in the process of readying a 150-200-crore ground infrastructure across cities to use it. A Ka-band hub or gateway each is being set up in Delhi, Bengaluru, Ahmedabad and Ranchi to deliver high-speed broadband services via the giant satellite.

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Along with its older HTS mates - GSAT-19 and GSAT-29 - it forms an Indian quartet of high-throughput satellites (HTSs). Each of them has a different space location over India and must have its own ground systems. The ground systems are being put up by external agencies chosen through competitive bidding. They will also be operated and maintained by them for five to seven years. Dr. Sivan admitted that there were "procedural delays" in completing the system with outside support.

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The use of the Ka band will be new in the country. In 2017, ISRO's payload developing unit, the Space Applications Centre (SAC) in Ahmedabad, had put out a search or RFP (request for proposal) for companies that could set up GSAT-11's Ka-band ground systems. About the HTSs, Dr. Sivan said, "Our target is to deliver close to [a Net data speed at the rate of] 100 Gbps through them. We have planned a fourth one, too - the GSAT-20. It will be a four-tonne-class HTS and will be launched towards the second half of 2019 on our GSLV Mark III vehicle. With that, our current national requirement should be met." The fleet is designed to mainly serve the remote and hilly northeastern States, and Jammu & Kashmir, which are starved of reliable Net services. "Our concentration is on those areas, where it is not possible to establish terrestrial cables as in cities," Dr. Sivan said.

Offline Olaf

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Offline TheVarun

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Re: GSAT 11 satellite
« Reply #48 on: Today at 01:42 PM »
 Yes, that's startling, apart from being disappointing- that the ground systems for GSAT-11 will be set up and maintained for some time, by external agencies.   Could this be part payment for the launch of the satellite. Is there precedence for this,  non-Indians( presumably) setting up and maintaining ground systems for a time?

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