DMPQ- Write short note on following: a) GSAT-7A b) GSAT 11

1) GSAT-7A:    GSAT-7A with a lift-off mass of 2250 kg, is a geostationary satellite carrying communication transponders in Ku-band. The Satellite is built to provide communication capability to the users over the Indian region. It was launched by the GSLV-F11 launchpad.  It is ISRO’s 7th flight with indigenous upper stage cryogenic engine.  The four liquid strap-ons and a solid rocket motor at the core form the first stage. The second stage of the vehicle is equipped with high thrust engine using liquid fuel. The Cryogenic Upper Stage forms the third and final stage of the vehicle.

2) GSAT 11:      India’s next generation high throughput communication satellite, GSAT-11 was successfully launched on December 05, 2018 from Kourou launch base, French Guiana by Ariane-5 VA-246. Weighing about 5854 kg, GSAT-11 is the heaviest satellite built by ISRO.
GSAT-11 is the fore-runner in the series of advanced communication satellites with multi-spot beam antenna coverage over Indian mainland and Islands. GSAT-11 will play a vital role in providing broadband services across the country. It will also provide a platform to demonstrate new generation applications. GSAT-11 was launched into a Geosynchronous Transfer Orbit and subsequently ISRO’s Master Control Facility at Hassan taken over the control of GSAT-11 to perform the initial orbit raising maneuvers using the Liquid Apogee Motor of the satellite for placing it in circular Geostationary Orbit.

 

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