Author Topic: GSLV MK-III D2 - GSAT-29 - November 14, 2018 (11:38 UTC) (Read 94048 times)

worldtimedate · « **Reply #1 on:** 12/20/2017 07:06 am »

ISRO Chairman confirms the launch of GSLV MK-III in 2018 with the heaviest ever payload of nearly 4 tonne

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Meanwhile, ISRO chairman AS Kiran Kumar said the space agency is facing the busiest year ahead with a cluster of launches lined up, which include Chandrayaan-2 in March. ISRO also plans to launch the second flight of GSLV MkIII, carrying the heaviest payload ever. The last successful GSLV MkIII launch was carried out on June 5, carrying a 3.2 tonne GSAT-19 communication satellite.

"This time, we are looking to launch a communication satellite of GSAT series which will be close to the 4-tonne class. It will carry new versions of optical communication and high frequency Q&V band." he said.

Source : Improved PSLV on track to blast off next month

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sojoner · « **Reply #2 on:** 02/27/2018 04:44 am »

I don't really think these schedule launch times really mean anything now. ISRO really need to work on their PR
anyone says anything randomly stating we will do x in y month which later slips.From Agugst 31 till now ISRO done
one launch i,e PSLV C40. If heat shield separation failure can put any space agency that much on back foot this is highly unlikely that international customers are really going to be pleased with this approach.

Steven Pietrobon · « **Reply #3 on:** 02/27/2018 06:39 am »

Quote from: sojoner on 02/27/2018 04:44 am

I don't really think these schedule launch times really mean anything now.

These types of delays are completely normal, especially as GSLV Mk.III is still in the development phase.

Jajar · « **Reply #4 on:** 03/30/2018 07:48 pm »

Are we looking at a launch during the month of June ?

russianhalo117 · « **Reply #5 on:** 03/31/2018 05:31 pm »

Will this flight employ the standard Vikas or HTVE??

vineethgk · « **Reply #6 on:** 03/31/2018 06:02 pm »

Quote from: russianhalo117 on 03/31/2018 05:31 pm

Will this flight employ the standard Vikas or HTVE??

No word yet on that, though they have made statements that they do intend to raise the thrust of L-110 stage in future missions.

Jajar · « **Reply #7 on:** 04/12/2018 05:55 am »

Congrats to team ISRO on placing IRNSS-I in orbit. Is now the next launch from SHAR, the GSLV MKIII with GSAT-29 ? Could someone tell me what is the purpose of this satellite, GSAT-29 ? Is it for telecommunications? Television broadcasting ? DTH ? Thanks.

vineethgk · « **Reply #8 on:** 04/12/2018 06:51 am »

Quote from: Jajar on 04/12/2018 05:55 am

Congrats to team ISRO on placing IRNSS-I in orbit. Is now the next launch from SHAR, the GSLV MKIII with GSAT-29 ? Could someone tell me what is the purpose of this satellite, GSAT-29 ? Is it for telecommunications? Television broadcasting ? DTH ? Thanks.

From what is known from DoS Annual Report, GSAT-29 is an experimental satellite that has a payload for optical communication, communication transponders in Q/V and Ku/Ka bands, as well as a high-resolution GEO imaging camera (GHRC).

The optical communication payload would likely be experimental in nature and maybe of domestic or Israeli origin. The latter is a possibility as ISRO had signed an agreement with the Israeli Space Agency last year that included optical communications as an area of interest. GHRC might be meant to test GEO high resolution imaging ahead of GISAT launch next year, or it may serve some strategic purpose like the Chinese Gaofen-4. These are just my guesses. So take it with a pinch of salt..

vineethgk · « **Reply #9 on:** 04/13/2018 12:19 am »

The following ToI article mention GSLV MkIII D2 with GSAT-29 in June

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The second demonstration flight of GSLV-Mk III - D2 by June will be to place the 3.5 ton GSAT-29 special communication satellite in orbit

https://m.timesofindia.com/india/after-successful-irnss-1i-launch-isro-centres-focus-on-next-pslv-c42/articleshow/63736788.cms

Jajar · « **Reply #10 on:** 04/13/2018 01:42 pm »

And it says that GSAT-29 is a special communication satellite which will find is application in telecommunications, television broadcasting and disaster warning...

Jajar · « **Reply #11 on:** 04/26/2018 11:45 am »

Now that GSAT-11 is being called back, one can expect more delays as far as GSAT-29 is concerned. I guess they might want to check on this before sending it up...

vineethgk · « **Reply #12 on:** 05/13/2018 11:23 pm »

GSLV MkIII D2/GSAT-29 launch likely in 'June or July' says K Sivan

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The chairman said, "Isro is simultaneously working on its next communication satellite Gsat-29. Its launch is due in June or July."

Perhaps this indicates a slip to July.
Source

vineethgk · « **Reply #13 on:** 05/16/2018 11:26 pm »

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About progress on the GSAT-29 communication satellite, Misra said, “I can only tell you is that GSAT-29 will have an assortment of communication technologies that will be cutting-edge.” A few days ago, the crucial Q and V Band communication payload developed at SAC was flagged off from the campus to be integrated with the GSAT-29 satellite assembled at an Isro centre in south India. “The GSAT-29 will be a boon for our Village Resource Centres (VRC), to bridge the digital divide,” a senior Isro official said.

Source

TheVarun · « **Reply #14 on:** 05/26/2018 05:17 pm »

Is the 4 tonne satellite weight/mass for the GSLV Mark 3 D-2, confirmed? If so, excellent! It would show that ISRO is quite confident of the vehicle, and satisfied with the result of the D-1 mission, that they could raise the satellite weight by 900kgs or more.

worldtimedate · « **Reply #15 on:** 05/31/2018 06:45 am »

Quote from: K210 on 05/24/2018 08:18 pm

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The GSLV-MK III mission, planned in July for launch of 4.4 ton satellite will be powered by a liquid core stage L110 stage, which uses two high pressure Vikas engine for combined high thrust

Slip to July is confirmed

Also GTO payload capacity of GSLV MK-3 will be increased to 4.4 tons from D2 mission onwards. The LEO payload capacity should also be increased to around 8.8 tons.

Source: https://timesofindia.indiatimes.com/home/science/lpsc-to-propel-isro-in-developing-light-craft-and-rlv/articleshow/64293342.cms

Had there been no PSLV fiasco last August 31, this satellite - scheduled to be launched in January, this year - would have been launched by now. But what is attributed to further delay in launching this satellite ? Hasn't the High Thrust Vikas Engine been tested in the GSLV- MK-II mission last March ? Or is it the power supply problem that is holding ISRO from launching it timely ? One launch failure has caused further delay in launching the next mission.

ZachS09 · « **Reply #16 on:** 05/31/2018 06:30 pm »

Only the vacuum version of HTVE has been tested. The sea level version has yet to be flown.

russianhalo117 · « **Reply #17 on:** 05/31/2018 11:28 pm »

Quote from: ZachS09 on 05/31/2018 06:30 pm

Only the vacuum version of HTVE has been tested. The sea level version has yet to be flown.

As mentioned upthread GSAT-29 is undergoing additional tests like GSAT-11 and other satellites awaiting launch due to the satellite anomaly earlier this year.

worldtimedate · « **Reply #18 on:** 06/09/2018 06:34 am »

Notwithstanding the setback in the PSLV Launch on August 31, 2017 and the snapping up of communication with the GSAT-6 satellite, the silver lining is that the forthcoming launch of GSLV-MK-III D2 will have a payload capacity of 3.7 ton - as confirmed by Dr. K. Sivan - which is an increase by 600 kg from the prior GSLV-MK-III D1 mission launched on June 5, 2017. Probably in one or two more launches, GSLV-MKIII will reach its peak capability of 4.4 ton, thus making India completely independent of the launching by Arianespace of its heavy communication satellites weighing 4 ton.

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He said, "The first launch of Isro's heaviest rocket GSLV Mk III DI last year carried 3.1 tonne weight. The second launch of Mk III D2, scheduled in July this year and which will carry Gsat-29 satellite, will have the load capability of 3.7 tonnes. We can easily raise the weight up to 4 tonne. With the semicryogenic stage, the same rocket will be able to carry the load up to five tonne. With the increased capability, we don’t have to depend on foreign spaceports to launch our satellites weighing over 5 tonnes."

Source : Isro gets nod for semi-cryogenic engine, will boost GSLV’s lift capability by 1 tonne

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Jajar · « **Reply #19 on:** 06/11/2018 03:11 pm »

Any news with regards to a tentative launch date ?