Bharat Rakshak

Why did they use a four year old engine for a mission as important as GSLV D-5?

All the arm chair rocket scientists on this thread should take a chill pill and desist from getting on their high horses and being unfairly critical of ISRO. ISRO along with a few of the DRDO labs (working on the missile programs), DAE are the only govt entities in India that have really delivered ...

"It would be at least two months before the Geosynchronous Satellite Launch Vehicle D5 (GSLV D5) blasts off from Sriharikota despite a dismayed Indian Space Research Organisation (ISRO) working overtime to figure out what went wrong last Monday. “Even if the defect is found to be a minor one, ...

have they begun leak analysis? No they cant even go near the rocket for about a week because of poisonous fuel in the air. It's sad to think they had 3 years to prepare for this and they still couldn't get a gslv off the ground, my hope for ISRO is getting less and less, they are all bark and no bi...

PSLV C-25 with Mangalyaan-1 is schdueled for launch from october 21st to november 7th from the first launch pad. PSLV C-25 will be the 25th flight of pslv,it will be a "XL" variant.

GSLV relaunch will take several months It would be at least two months before the Geosynchronous Satellite Launch Vehicle D5 (GSLV D5) blasts off from Sriharikota despite a dismayed Indian Space Research Organisation (ISRO) working overtime to figure out what went wrong last Monday. “Even if the de...

...great...everytime gslv is set to launch there is always something that goes wrong, well hopefully in time ISRO will master this technology and we can finally end our dependence on french rockets. Does anyone know what the new launch date is?

The diameter of D-3's shroud was 3.4m, the F-06 mission in december 2010 was the first GSLV (and maybe the last) to use the 4m shroud.

Heres some info about the C-12.5 stage: http://www.isro.org/gslv-d3/pdf/GSLV-D3 ... ochure.pdf

There's some info about the C-15 stage on wikipedia, other than that you won't find any other info about it unless you look at ISRO's annual reports or budget papers. These are made publicly available every year and shouldn't be too hard to track down with a google search.

As Neela above said there are two cryogenic engines and two cryogenic stages. A cryogenic stage is what holds engine together, it contains fuel tanks and other hardware. ISRO has 2 cryogenic stages - C-12.5 and C-25. C-12.5 is the cryogenic stage for the GSLV MK-2's upper stage. C-25 is the cryo sta...

govt approves GSAT-15 and GSAT-16, GSAT-15 will be based on GSAT-8 and GSAT-16 will be based on GSAT-10, both satelites will be launched by ariane-5. India will launch two satellites over the next two years to augment transponder capacity and make contingency arrangements to support services like VS...

Future upgrades for GSLV-3 include: - Replacing the L110 stage with a more efficient and powerful semi-cryo stage, this increase LEO capablity to about 15 tons - Using a lighter case on the S-200 motors (500kg LEO increase max) - Modifying the upper stage to be restartable (payload increase depends ...

Krish C, excuse the ignorance, but are the C-20 engine and C-25 'stage' referring to two distinct engines or entities? If they are 2 engines being developed, that is very good. One must be for the initial flights, and the other for later flights. Or it's possible that there are two teams working on...

Current status of GSLV MK-3:

some info on modifications made on GSLV MK-2 for upcoming GSLV D-5 mission

Relating to a specific case of sat failure, they probably were trying to conserve the sat weight and use key electrical components from foreign sources that are lighter weight, however for some odd reason they fail before their design life. ISRO has to get the GSLV right yet if they are building a ...

ISRO is building a replacement for GSAT-10 called GSAT-16, its planned for launch in 5 years aboard GSLV MK-3. Check under future missions on ISRO's site for more details. The fact that they are building a identical replacement satellite pretty much confirms there is something wrong with GSAT-10. wh...

CE-60 and CE-100 will only be needed if ISRO decides to build a rocket that can launch 20+ tons to LEO, such a capability would only be needed if their going to build a space station or offer a large commercial launch vehicle for other countries to launch their satellites on. This is only a concept ...

ULV rocket family possible variants by space blogger antriksh:




Antriksh's blog: http://antariksh-space.blogspot.com.au/

He also posts info about ISRO's programs on nasaspaceflight forums.

@vic Two more strap ons can be attached to GSLV mk-3 to increase GTO payload from 4.5 ton to 5 ton. ISRO will be unable to launch 6-7 ton com sats until ULV rocket comes online sometime in the next decade. ULV is speculated to have a GTO capability of 10-16 tons and LEO capability of 25-40 tons. Yo...

@vic Two more strap ons can be attached to GSLV mk-3 to increase GTO payload from 4.5 ton to 5 ton. ISRO will be unable to launch 6-7 ton com sats until ULV rocket comes online sometime in the next decade. ULV is speculated to have a GTO capability of 10-16 tons and LEO capability of 25-40 tons. Th...

@vic

Two more strap ons can be attached to GSLV mk-3 to increase GTO payload from 4.5 ton to 5 ton. ISRO will be unable to launch 6-7 ton com sats until ULV rocket comes online sometime in the next decade. ULV is speculated to have a GTO capability of 10-16 tons and LEO capability of 25-40 tons.

ISRO space suit for manned missions:



source: isro facebook page

@merlin I done some research and found out that GSAT-10 is in it's orbit and functioning however the transponders appear to be dead, a powerful failure might have happened killing the transponders or the satellite could be having problems getting a earth lock. Or ISRO could be leaving the satellite ...

More updates from ISRO's outcome budget: Second vehicle assembly building for second launch pad: The construction of Second VAB for Second launch pad has started. When completed it will reduce the launch turnaround from 3 months to 2 months for the Second launch pad. This will increase the maximum l...

isro outcome budget for 2013 is out: http://www.isro.org/pdf/Outcome%20budget2013-14.pdf Interesting updates: GSLV MK-3 test flight - Scheduled during April 2014 and will carry a prototype model of ISRO crew capsule, crew capsule will weigh 2500kg Third static test of S200 motor - ISRO is preparing ...

PSLV C-22 launch from may has slipped into June: http://www.indiatimes.com/technology/science/india-gears-up-to-launch-first-navigational-satellite-66743.html So this changes isro's schedule to one GSLV launch in may and a PSLV in June. This looks more feasible than two launches in one month as they...

It is highly unlikely that ISRO will do 2 launches in one month. They require a minimum of 6-8 weeks between launches. On another topic does anyone know the progress of semi-cryo engine development? They do have two launch pad so perhaps it can be done... Yes but both launch pads have never been us...

From ISRO FB page Three big missions this year... PSLV C22 with IRNSS 1 - the first navigation satellite in the Indian Regional Navigation Satellite System (IRNSS) scheduled to lift in May, 2013. GSLV D5 with the India make cryogenic stage, lift off from the second launchpad in Sriharikota the same...

I hear that ISRO has begun design work on the CE-60 cryogenic engine can anyone confirm this?? Also does anyone know when the CE-7.5 (for GSLV MK-2) will be ground tested. The engine still needs to go through high altitude testing and endurance testing before the may launch of the GSLV.

More pics

PSLV C-20 first stage roll control modules integration



Vika's ground test???

Some more pics

SARAL



PS4 integration



PS2 integration

Some pics of the PSLV C-20 and payloads http://www.isro.org/pslv-c20/Imagegallery/satellite/sat2.jpg SARAL mounted on top of the Dual launch adapter http://www.isro.org/pslv-c20/Imagegallery/satellite/sat3.jpg PSLV C-20 with heat shield closed http://www.isro.org/pslv-c20/Imagegallery/satellite/sat5...