INSAT - 4B Launch Date 12.03.2007
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| INSAT-4B |
INSAT–4B Spacecraft is the second in the INSAT 4 series of spacecrafts and is configured with exclusive communication payloads to provide services in Ku and C frequency bands. This is co-located with INSAT–3A at 93.5 o E longitude.
Mission | Communication |
Weight | 3025 Kg (at Lift – off) |
Onboard Power | 5859 W |
Stabilization | It uses 3 earth sensors, 2 digital sun sensors, 8 coarse analog sun sensors, 3 solar panel sun sensors and one sensor processing electronics. The wheels and wheel drive electronics were imported with indigenous wheel interface module to interface the wheel drive electronics and AOCE. |
Propulsion | The propulsion system is employing 16 thrusters, 4 each located on east, west and AY sides and 2 each on north and south sides. There is one 440 N liquid apogee motor (using Mono Methyl Hydrazine (MMH) as fuel and oxides of Nitrogen ( MON3 as oxidizer) and three presurant tanks mounted on the LAM deck. |
Payload | 12 Ku band high power transponders covering Indian main land using 140W radiatively cooled TWTAs. |
12 C band high power transponders with extended coverage, covering southeast and northwest region apart from Indian main land using 63 W TWTAs | |
Launch date | March 12, 2007 |
Launch Site | French Guyana |
Launch Vehicle | Ariane5 |
Orbit | Geostationary (93.5o E Longitude) |
Mission Life | 12 Years |
