According to Indian Space Research Organization (ISRO), the preparations for fueling up the cryogenic engine is under progress. On Monday, ISRO's Mission Readiness Review Committee and the Launch Authorization Board (LAB) cleared the launch on Thursday evening.

The communication satellite will be launched with ISRO's heavier rocket GSLV. The 49.1 metre tall and weighing 416 tonne GSLV rocket will blast off at 4.52 pm from the second launch pad. Seventeen minutes into the flight the rocket will put into orbit the GSAT-6 communication satellite weighing 2,117 kg. This is the fifth time ISRO is flying a GSLV rocket carrying a satellite weighing over two tonne.

Out of the four earlier rocket missions with over two tonne satellites, three failed due to various reasons and one was successful. The GSLV is a three stage/engine rocket has a total carrying capacity of around 2.2 tonne. The first stage is fired with solid fuel, the second with liquid fuel and the third is the cryogenic engine.

The satellite provides communication through five spot beams in S-band and a national beam in C-band for strategic users. The cuboid shaped GSAT-6 has a lift off mass of 2,117 kg. Of this, propellants weigh 1,132 kg and the dry mass of the satellite is 985 kg. One of the advanced features of GSAT-6 satellite is its S-Band Unfurlable Antenna of six metre diameter. This is the largest satellite antenna realized by ISRO.


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