Know more about GSAT 7 India’s First Defense Satellite

GSAT 7, known to be India’s first exclusive Defense Satellite would be launched on Friday August 30,  from European space consortium Arianespace from Kourou spaceport in French Guiana. According to news reports, it has been designed exclusively to serve Indian Navy. It was earlier known as INSAT 4F.

Indian Space Research Organization shies away from calling it an exclusive satellite for the Navy on record, but privately admits exactly that.

GSAT-7 is scheduled to be launched into a Geosynchronous Transfer Orbit (GTO) by Ariane-5 VA 215 during the 50-minute launch window starting from 2 am on Friday.

GSAT-7 has a lift-off mass of 2625 kg and is based on ISRO’s 2500 kg satellite bus with some new technological elements, including the antennae. Its solar arrays generate 2900 W of electrical power. A 108 Ampere-Hour Lithium-Ion battery enables the satellite to function during the eclipse period. The propulsion subsystem has a 440 Newton Liquid Apogee Motor (LAM) and thrusters.

The Development  cost of GSAT 7  us Rs 185 crore  and it would carry payloads operating in UHF, S, C and Ku bands.

It is the sixth among the stack of seven INSAT-4 series communication satellites planned to be launched by India.

 

Technical Specifications of GSAT 7

Mission type Communication
Operator ISRO
Mission duration 9 years (planned)
Spacecraft properties
Manufacturer ISRO Satellite Centre, Space Applications Centre
Launch mass 2,330 kilograms (5,100 lb)
Power 2 kilowatts
Start of mission
Launch date 29 August 2013
Rocket Ariane 5 ECA
Launch site Satish Dhawan Space Centre SLP
Orbital parameters
Reference system Geocentric
Regime Geostationary
Longitude 74° East
Transponders
Band UHF
S-band
C-band
Ku-band

 

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