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INSAT-3C
INSAT-3C is a multipurpose satellite built by ISRO and launched by Arianespace in Jan 2002. INSAT-3C is the second satellite of the INSAT-3 series. All the transponders provide coverage over India.Insat-3C is controlled from the Master Control Facility at Hassan in Karnataka.It will provide voice, video and digital data services to India and neighboring countries.
== Launch ==
INSAT 3C was launched by the Ariane 4 launch vehicle of Arianespace at 5:17 am IST from Kourou, French Guyana in South America. INSAT-3C was placed into a Geo-synchronous Transfer Orbit (GTO), 21 minutes after the lift-off, in a 3-axis stabilised mode, with a perigee of 570 km and an apogee of 35,920 km and an inclination of 4° with respect to the equator. After 4 maneuvers INSAT-3C has been put in its final three axis stabilised mode on February 1, 2002.The orbit rising maneuvers were carried out in phases by firing the 440 Newton Liquid Apogee Motor(LAM). The satellite carried about 1.5 tonne of propellant (MMH (MonoMethylHydrazine) and MON-3 (Mixed Oxides of Nitrogen)) for orbit raising operations as well as for station keeping and in-orbit attitude control.INSAT-3C like all of its predecessors in the INSAT series has a 3-axis body stabilized spacecraft using momentum/reaction wheels earth sensors, sun sensors, inertial reference unit and magnetic torquers.It is equipped with unified bi-propellant thrusters.
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