GSLV Mark III rocket Current Affairs

ISRO successfully launches GSAT-17 Satellite

ISRO has successfully launched GSAT-17 communication Satellite onboard the Ariane-5 launch vehicle from the Guiana Space Center at French Guiana on June 28. GSAT-17 will be the ISRO’s third satellite that is launched within a span of three months.

Salient Highlights

The 3,477-kg GSAT 17 communication satellite will be placed in the geostationary orbit and will have a mission life of 15 years.

The satellite will be an addition to the current fleet of 17 Indian communication satellites that are already providing services from space.

Apart from providing communication services, the satellite will provide meteorological and satellite-based data to help rescue services which were earlier provided by geostationary satellites called Indian National Satellite System (INSAT).

GSAT-17 will provide continuity of services of operational satellites in C, extended C and S bands

Once launched, ISRO’s Master Control Facility at Hassan in Karnataka and Bhopal in Madhya Pradesh will take over and place the satellite in geostationary orbit. GSAT-17 was designed and assembled at the ISRO Satellite Centre in Bengaluru.

In addition, GSAT-17 will also launch communication satellite Hellas Sat 3-Inmarsat S EAN. Hellas Sat 3 will provide directly to home television and telecom services across Europe, West Asia and South Africa. Inmarsat is set to provide in-flight Internet facilities for European airlines.

Launch Vehicle

As ISRO is yet to have a launcher that is capable of lifting payloads above 2,000 kg. ISRO has just started testing the GSLV-Mark III for this purpose.

GSAT-17 will be the 21st Indian launch for the Arianespace. ISRO’s upcoming GSAT- 11 which will weigh more than 5,000 kg will also be launched by Arianespace.

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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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