Monster Rocket GSLV Mk III Launched Successfully by ISRO


Ajit Kumar AJIT KUMARWISDOM IAS, New Delhi.

Indian Space Research Organisation on May5, 2017, launched its monster rocket, Geosynchronous Satellite Launch Vehicle Mark III (GSLV Mk III), with 3,136 kg communication satellite GSAT-19 from the spaceport of Sriharikota, in Andhra Pradesh. The launch will give India self-reliance in delivering large payloads and also prepare the country for its attempt to put astronauts into space. 
 
The GSAT-19, which has a life span of 10 years, will be the heaviest satellite to be launched into orbit by an Indian rocket till date. The multi-beam satellite will carry Ka and Ku band forward and return link transponders and also geostationary radiation spectrometer.

GSLV Mk III
GSLV Mk III is a three-stage heavy lift launch vehicle developed by ISRO. The vehicle has two solid strap-ons, a core liquid booster and a cryogenic upper stage.
GSLV Mk III is designed to carry 4 ton class of satellites into Geosynchronous Transfer Orbit (GTO) or about 10 tons to Low Earth Orbit (LEO), which is about twice the capability of GSLV Mk II.
The two strap-on motors of GSLV Mk III are located on either side of its core liquid booster. Designated as ‘S200’, each carries 205 tons of composite solid propellant and their ignition results in vehicle lift -off . S200s function for 140 seconds. During strap-ons functioning phase, the two clustered Vikas liquid Engines of L110 liquid core booster will ignite 114 sec after lift -off to further augment the thrust of the vehicle. These two engines continue to function after the separation of the strap-ons at about 140 seconds after lift -off.
 
This is India’s first fully functional rocket to be tested with a cryogenic engine that uses liquid propellants — liquid oxygen and liquid hydrogen.
 
It took nearly 25 years, 11 flights and over 200 tests on different components of the rocket for it to be fully realised. GSLV-Mk III is a three-stage vehicle with two solid motor strap-ons (S200), a liquid propellant core stage (L110) and a cryogenic stage (C-25).
 
The mission could also pave the way for manned missions into space. Currently, there are just three countries – US, Russia, and China – which have the capability of launching manned missions. If successful, the GSLV-Mk III — earlier called Launch Vehicle Mark-3 or LVM-3 — could be India’s vehicle of choice to launch people into space.
 
The rocket, which has about twice the capability of the GSLV-Mk II in terms of the payload it can place into orbit, weighs 640 tonnes and has cost the country an estimated Rs 400 crore. The rocket's first developmental flight will carry the GSAT-19 satellite — developed to help improve telecommunication and broadcasting areas.
 



Tuesday, 06th Jun 2017, 06:49:04 PM

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