GSLV Mk III Current Affairs
ISRO’s GSLV-Mk III has been launched from the Satish Dhawan Space Centre in Sriharikota on June 5, 2017. GSLV-Mk III is the heaviest rocket ever made by ISRO which is capable of carrying heavy payloads.
GSLV-Mk III can put four-tonne satellites in the Geosynchronous Transfer Orbit (GTO) and is capable of placing up to eight tonnes in a Low Earth Orbit (LEO). This capacity is enough to carry a manned module and launch people into space.
The rocket has three-stages with two solid motor strap-ons (S200), a liquid propellant core stage (L110) and a cryogenic stage (C-25). The solid booster S200 is the third largest solid booster in the world. It was successfully tested at the Satish Dhawan Space Centre (SDSC), Sriharikota on January 24, 2010. The indigenously developed cryogenic upper stage, C-25, which is the most difficult component was successfully tested on February 18, 2017.
On June 5, GSLV-Mk III’s first developmental flight, D1, will place GSAT-19 satellite into space. GSAT-19 will help to improve telecommunication and broadcasting areas. This is India’s first fully functional rocket to be tested with a cryogenic engine. Cryogenic engine makes use of liquid propellants (liquid oxygen and liquid hydrogen). ISRO took about 25 years, 11 flights and over 200 tests on different components to come up with this rocket.
The rocket weighs 640-tonne which will be equivalent to the weight of 200 fully-grown Asian elephants. The rocket will be India’s heaviest but shortest rocket with a height of 43 metre.
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.
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 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.