GSLV Mark III rocket Current Affairs

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ISRO to test launch GSLV-Mk III-D1 in May 2017

ISRO is all set to undertake the first developmental flight of a ‘game-changer’ rocket (launching vehicle) that will have the capacity to launch four-tonne class of satellites, from Sriharikota spaceport. ISRO looks forward to conduct the second developmental flight within this year.

Significance

With the successful test launch, ISRO can carry out all the launches within the country instead of depending on international agencies for the launch of heavier satellites. Hence, the successful test launch will help in reducing ISRO’s dependency on international launching vehicles. ISRO’s launch vehicles as of now have the capability to launch satellites only up to 2.2 tonne. For the launch of heavier satellites, it had to depend upon the international agencies.  So, the ISRO rightly views operationalisation of this rocket as a “game-changer” mission.

GSAT-19

GSAT-19 would be the payload for the first developmental flight of the indigenous GSLV-Mk III-D1 Launcher. GSAT-19 has a mass of 3200 kg and would carry Ka and Ku band payload along with a Geostationary Radiation Spectrometer Payload (GRASP). The spectrometer would be used to monitor and study the nature of the charged particles and influence of space radiation on spacecraft and electronic components.

GSAT-19 would also make use of advanced spacecraft technologies such as bus subsystem experiments in the electrical propulsion system, indigenous Li-ion battery and indigenous bus bars for power distribution etc.

About GSLV-Mk III

The Geosynchronous Satellite Launch Vehicle Mark III is the next generation launch vehicle of ISRO which will be capable of launching four-tonne class satellites into Geosynchronous Transfer Orbit (GTO). It has an indigenous cryogenic third stage, designated as C25. The C25 stage is considered as the most powerful upper stage developed by ISRO which uses Liquid Oxygen (LOX) and Liquid Hydrogen (LH2) propellant combination.

 

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ISRO successfully tests largest cryogenic engine for GSLV Mark III rocket

Indian Space Research Organisation (ISRO) has successfully ground tested India’s largest indigenously developed Cryogenic Upper Stage engine for GSLV Mark III.

It was tested for full 10 minutes at ISRO’s Liquid Propulsion Complex (ILPC) at Mahendragiri in Tirunelveli district of Tamil Nadu.

Key Facts
  • The C25 stage is the most powerful upper stage so far developed by ISRO. It uses Liquid Oxygen and Liquid Hydrogen propellant combination stored at minus 253 degrees centigrade.
  • The development of C25 cryogenic stage will provide ISRO capability to launch 4 ton class satellites in Geosynchronous Transfer Orbit (GTO), an altitude where satellites revolve in sync with Earth’s rotation.
  • So far, the cryogenic engine consisting very complex technology has been developed only by Russia, US, France, China, Japan and India. 
Significance of Test
  • This was last test in the series before going for actual GSLV Mark III rocket launch in April 2017 where engine will be put into actual use.
  • The GSLV Mark III rocket will be a successor to the GSLV Mark II which was first launched in 2001 and can carry a heavier payload than the Polar Satellite Launch Vehicle or PSLV.

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