Sriharikota: Rounding off the year 2018, the Indian Space Research Organisation (ISRO) on Wednesday successfully launched a military communication satellite GSAT-7A, primarily for the Indian Air Force, in a text-book style.
At 4.10 pm, the GSLV-F11 rocket ascended into the sky from the second launch pad at Satish Dhawan Space Centre with a long fiery orange flame at its tail.
Slightly over 19 minutes into its flight, the Indian rocket Geosynchronous Satellite Launch Vehicle-F11 (GSLV-F11) rocket slung the satellite in a geosynchronous transfer orbit (GTO).
The GSAT-7A will be pushed up further to its final geostationary orbit firing its on board motors in the days to come.
“Today the GSLV-F11 rocket safely injected GSAT-7A in a super synchronous transfer orbit. One of the unique features of the rocket is the complete burn-out of its cryogenic engine. As a result, we got 2,000 km more than what we had expected. This has increased the life span of GSAT-7A,” said ISRO Chairman K Sivan soon after the successful mission.
The GSAT-7A is the heaviest communication satellite to be lifted by a GSLV Mk II rocket.
The 2,250 kg GSAT-7A is the 35th communication satellite built by ISRO. The satellite will beef up the communication capabilities of the IAF.
The satellite’s life span is projected as eight years.
It would enable IAF to link its ground radar stations, its airbases and Airborne Early Warning and Control System (AWACS) planes. The satellite may also control IAF’s unmanned aerial vehicles and drones.
The GSLV is a three-stage/engine rocket. The core of the first stage is fired with solid fuel while liquid fuel fires the four strap-on motors. The second is the liquid fuel and the third is the cryogenic engine.
A cryogenic engine is more efficient as it provides more thrust for every kilogramme of propellant burnt.
This is the second dedicated military communication satellite to be launched.
The first, GSAT-7 or Rukmini, was launched in 2013, for use by the
Indian Navy. Earlier, the satellites were of dual use, for civilian and defence purposes. — IANS
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