LVM3/GSLV Mark III News, Discussions, Updates and Reports

[arnabmit]

That would be MkII

rahul - isnt one of the gslv's supposed to liftoff sometime this month ? - is this a delay or a different MK ?

 

[rahulrds1]

rahul - isnt one of the gslv's supposed to liftoff sometime this month ? - is this a delay or a different MK ?

GSLV mk-2 launch, earlier planed for April-2013, Now the launch is in july 2013.
GSLV mk-3, heavy lift category , will be lauched after 8 months i.e January 2014.

 

[venkat]

GSLV-III is it based on ARIANE_5?

 

[rahulrds1]

 

[tramp]

Is it true that GSLV Mk3 will be flying without the cryogenic engine? Does it mean ISRO is not yet confident about the success of the indigenous cryogenic engine?

 

[CrYsIs]

GSLV-III is it based on ARIANE_5?

NO,GSLV MK3 is not based on ariane 5

 

[CrYsIs]

Is it true that GSLV Mk3 will be flying without the cryogenic engine? Does it mean ISRO is not yet confident about the success of the indigenous cryogenic engine?

the first test will be suborbital without cryogenic engine.....they want to check various parameters before launching a full scale orbital flight.Besides everything depends upon the july launch of GSLV MK2..

For the plan year 2012-2017 govt has approved only 2 GSLVMK3 flight,the first one is on jan 2014 and another one is on 2017.

 

[vram]

Is it true that GSLV Mk3 will be flying without the cryogenic engine? Does it mean ISRO is not yet confident about the success of the indigenous cryogenic engine?

Yes they will mostly not have the cryo engine. and NO its not because of the confidence level its mostly due to the fact that the JAN 2014 mk.III launch is to test entirely diffferent set of parameters and not the Cryo engine at all. First the stability, capability of the new configuration, power generation ratio of the new solid propelant engines, maintaining proper gimbal orientation of the space vehicle etc etc...are to be tested here, its basically a completely new design....This test basically has nothing to do with the cryo engine but entirely the rest of the craft...
The cryoengine is actually a pretty stable platform once you have worked out the kinks and arrived at a stable configuration.
The MK.II this July will actually tell us where we are in terms of mastering the Cryo engine...

 

[tramp]

The cryoengine is actually a pretty stable platform once you have worked out the kinks and arrived at a stable configuration.
The MK.II this July will actually tell us where we are in terms of mastering the Cryo engine...

Hope that test finally puts an end to our cry over the cryo.

 

[roma]

firstly many thanks to rahul for an interesting and most pertinent topic , secondly thanks to arnab and rahul for info on launch dates

cryogenic engine or not, mk3 looks very impressive from parameters and as long as major components are indigenous, then cryo can come when it's ready !!

 

[Sridhar]

GSLV MK III is another advanced vehicle that we are developing. Now we are going to have the ground test of the cryogenic stage also. We had a small test last week that was successful.

'Mission not in conflict with GSLV development' - Financial Express

 

[Neeraj Mathur]

Geosynchronous Satellite Launch Vehicle Mark III

The GSLV-III or Geosynchronous Satellite Launch Vehicle Mark III , is a launch vehicle currently under development by the Indian Space Research Organization. GSLV Mk III is conceived and designed to make ISRO fully self reliant in launching heavier communication satellites of INSAT-4 class, which weigh 4500 to 5000 kg. It would also enhance the capability of the country to be a competitive player in the multimillion dollar commercial launch market. The vehicle envisages multi-mission launch capability for GTO, LEO, Polar and intermediate circular orbits.
GSLV-Mk III is designed to be a three stage vehicle, with 42.4 m tall with a lift off weight of 630 tonnes. First stage comprises two identical S200 Large Solid Booster (LSB) with 200 tonne solid propellant, that are strapped on to the second stage, the L110 re-startable liquid stage. The third stage is the C25 LOX/LH2 cryo stage. The large payload fairing measures 5 m in diameter and can accommodate a payload volume of 100 cu m. Realisation of GSLV Mk-III will help ISRO to put heavier satellites into orbit.

Welcome To ISRO :: Launch Vehicles :: GSLV Mark III

 

[pmaitra]

Re: GSLV Mk. III - India's heavy-lift Space launch vehicle

"There are important technological aspects that have to be considered including reducing the velocity, mechanism involved to land and locate precisely where to land."

Talking about other projects in the pipeline he said, "Major focus will be on the development of next generation launch vehicle GSLV MK 111 which is currently in in its final stages. This will make us capable enough to launch 4T class communication satellite.

"New capabilities in earth observation are planned with the development of Geo Imaging Satellites(GISAT)to provide near real time images of large areas of the country."

See more at: India to launch Chandrayaan- II by 2016-17 - Hindustan Times

 

[happy]

Now, ISRO Well on Course to Test Launch Rocket Giant - The New Indian Express

Work on India's most powerful rocket to date, scheduled for an experimental flight in April, is progressing fast.

The first stage of the hefty Geosynchronous Satellite Launch Vehicle Mk-III (GSLV Mk-III) is ready, officials of Vikram Sarabhai Space Centre (VSSC) here said.

Two S-200 boosters, which use solid fuel, comprise the first stage of Mk-III. This stage will burn for 130 seconds. "The stage is ready. Work is now progressing on the second stage at the Liquid Propulsion Systems Centre (LPSC) in Mahendragiri," VSSC director S Ramakrishnan said. The GSLV Mk-III has three 'stages' in all.

The second stage uses liquid fuel - Unsymmetrical Dimethylhydrazine (UDMH) with Dinitrogen Tetroxide. This stage - L 110 - has two advanced Vikas engines and will burn for 200 seconds. The upper, third stage uses a more powerful version of the cryogenic engine used on the recent GSLV D-5 mission. The engine has been designated CE-2O and uses Liquid Oxygen and Liquid Hydrogen as fuel. Theoretically, this stage will burn for 580 seconds, but the April flight being an experimental one, the cryo stage won't be carrying propellant.

Tests are currently progressing on the engine at present, LPSC director M C Dathan said on the sidelines of a reception given to ISRO scientists here on Monday. ''The third test has been conducted successfully,'' he said.

At 42.4 metres, Mk-III is shorter than the regular GSLV, but it has a lift-off weight of around 630 tonnes compared to the latter's 400 tonnes. Mk-III can place satellites weighing up to four tonnes in the geostationary transfer orbit, giving ISRO an edge in the market. If everything goes according to plan, the assembly of the rocket will begin at the Satish Dhawan Space Centre, Sriharikota, in February.

"The GSLV Mk-III will have a sub-orbital flight in April. It will have as payload a prototype of the crew module meant for the manned mission," Ramakrishnan said.

Mk-III will lift off from the second launchpad at Sriharikota, the same one the GSLV D-5 used on January 5. No modifications will be needed to the launchpad as it can accommodate the bigger GSLV, Ramakrishnan said. A regular flight of the Mk-III version is expected only by 2016.

 

[LalTopi]

Now, ISRO Well on Course to Test Launch Rocket Giant - The New Indian Express

Work on India's most powerful rocket to date, scheduled for an experimental flight in April, is progressing fast.

The first stage of the hefty Geosynchronous Satellite Launch Vehicle Mk-III (GSLV Mk-III) is ready, officials of Vikram Sarabhai Space Centre (VSSC) here said.

Two S-200 boosters, which use solid fuel, comprise the first stage of Mk-III. This stage will burn for 130 seconds. "The stage is ready. Work is now progressing on the second stage at the Liquid Propulsion Systems Centre (LPSC) in Mahendragiri," VSSC director S Ramakrishnan said. The GSLV Mk-III has three 'stages' in all.

The second stage uses liquid fuel - Unsymmetrical Dimethylhydrazine (UDMH) with Dinitrogen Tetroxide. This stage - L 110 - has two advanced Vikas engines and will burn for 200 seconds. The upper, third stage uses a more powerful version of the cryogenic engine used on the recent GSLV D-5 mission. The engine has been designated CE-2O and uses Liquid Oxygen and Liquid Hydrogen as fuel. Theoretically, this stage will burn for 580 seconds, but the April flight being an experimental one, the cryo stage won't be carrying propellant.

Tests are currently progressing on the engine at present, LPSC director M C Dathan said on the sidelines of a reception given to ISRO scientists here on Monday. ''The third test has been conducted successfully,'' he said.

At 42.4 metres, Mk-III is shorter than the regular GSLV, but it has a lift-off weight of around 630 tonnes compared to the latter's 400 tonnes. Mk-III can place satellites weighing up to four tonnes in the geostationary transfer orbit, giving ISRO an edge in the market. If everything goes according to plan, the assembly of the rocket will begin at the Satish Dhawan Space Centre, Sriharikota, in February.

"The GSLV Mk-III will have a sub-orbital flight in April. It will have as payload a prototype of the crew module meant for the manned mission," Ramakrishnan said.

Mk-III will lift off from the second launchpad at Sriharikota, the same one the GSLV D-5 used on January 5. No modifications will be needed to the launchpad as it can accommodate the bigger GSLV, Ramakrishnan said. A regular flight of the Mk-III version is expected only by 2016.

good to hear. although I don't get the logic of putting in an expensive new engine for the cryo stage but without any fuel!

 

[Eastman]

I just wonder why the first stage boosters is not liquid propulsion one. Mk II got 4 strap on liquid propulsion engines but still got a solid stage

see how sexy Chinese Long march is looking with its efficient shock diamond fume of its efficient liquid fueled propulsion is

 

[Srinivas_K]

I just wonder why the first stage boosters is not liquid propulsion one. Mk II got 4 strap on liquid propulsion engines but still got a solid stage

see how sexy Chinese Long march is looking with its efficient shock diamond fume of its efficient liquid fueled propulsion is

Solid Boosters have the advantages compared to liquid boosters. Liquid boosters has the fuel leakage problems as we faced in GSLV D5 mark 2 in its first attempt.

Solid propellant Boosters are also easy to transport.

Each S-200 boosters produce 500 tonnes of thrust which is enough to lift the vehicle compared to 4 liquid boosters.

 

[Eastman]

@Srinivas_K ohh I see the required thrust will need some 6.4 vikas as strap ons

 

[Srinivas_K]

@Srinivas_K ohh I see the required thrust will need some 6.4 vikas as strap ons

Please explain the bold part.

 

[Eastman]

Please explain the bold part.

2 S200 produces some 5151 Kn while a single Vikas (uprated) produce some 800kn.


5151/800 =6.4 (aprox)