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INSAT-3E is the fourth satellite to be launched in the INSAT-3 series. It is an exclusive communication satellite to further augment the communication services that are being provided by the INSAT System.Weighing 2750 kg at lift-off, INSAT-3E carries 24 Normal C-band and 12 Extended C-band transponders.
INSAT-3E was launched from Kourou, French Guyana by the European Ariane 5 launch vehicle into a Geosynchronous Transfer Orbit (GTO) with a perigee of 650 km and an apogee of 36,000 km inclined at an angle of 7 deg to the equator. The satellite was manoeuvred to its final circular 36,000 km Geostationary Orbit by firing the Liquid Apogee Motor (LAM) on board the satellite. The satellite was stationed at 55 deg East longitude.
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| Orbit |
Geostationary (55 deg East longitude) |
| Dry Mass |
1181 kg |
| Lift-Off Mass |
2750 kg |
| Size |
Cuboid of dimensions 2.0 m x 1.77 m x 2.8 m with solar arrays on north and south sides |
| Length when fully deployed |
15.445 m (North-South) |
| Spacecraft Propulsion and Control |
440 N Liquid Apogee Motor with MON-3 (Mixed Oxides of Nitrogen) and MMH (Mono Methyl Hydrazine) for orbit raising.
3-axis body stabilised in orbit using sensors, momentum and reaction wheels, magnetictorquers and eight 10 Newton & eight 22 Newton Reaction Control Thrusters |
| Power |
Solar array generating 2400 W. Two 70 Ah Nickel-Hydrogen batteries to support full payload operation during eclipse period |
| Mission life |
12 years |
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Communication Payload
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| 24 Normal C-band transponders having India beam coverage, providing an Edge of Coverage-Effective Isotropic Radiated Power (EOC-EIRP) of 37 dBW |
| 12 Extended C-band transponders having India beam coverage, providing an EOC-EIRP of 38 dBW |
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MISSION SEQUENCE
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COMMUNICATION COVERAGE
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