Insat 4A, 4B
Insat 4B [ISRO]
INSAT 4A and INSAT 4B are dedicated to telecommunications, with 12 Ku band and 12 C-band transponders each. Their coverage zone is the Indian sub-continent.
Designed, built and integrated by ISRO, the INSAT 4A and INSAT 4B satellites will each weigh about 3,200 kg at liftoff.
INSAT-4 series is planned to have seven satellites, INSAT-4A through INSAT-4G with INSAT-4D as a spare. The transponder capacity of this series has been worked out after evaluating the requirement projected by different uses/user departments. It is planned that, by 2007, INSAT system will have about 250 transponders in various bands catering to a demand of up to 11 Giga Bits Per Second (GBPS) capacity.
| Nation: | India |
|---|---|
| Type / Application: | Communication |
| Operator: | Insat |
| Contractors: | ISRO |
| Equipment: | 12 Ku-band transponders, 12 C-band transponders |
| Configuration: | I-3K (I-3000) Bus |
| Propulsion: | 440 Newton thrust liquid apogee motor |
| Power: | 2 deployable solar arrays, batteries |
| Lifetime: | 12 years |
| Mass: | 3081 kg (#4A); 3028 kg (#4B), 1335 kg (dry) |
| Orbit: | GEO |
| Satellite | Date | LS | Launch Vehicle | Remarks | |
|---|---|---|---|---|---|
| Insat 4A | 21.12.2005 | Ko ELA-3 | Ariane-5GS | with MSG 2 | |
| Insat 4B | 11.03.2007 | Ko ELA-3 | Ariane-5ECA | with Skynet 5A |
Further Insat missions:
- Insat 1A, 1B, 1C, 1D (Insat-1 Bus)
- Insat 2A, 2B (I-2K Bus)
- Insat 2C, 2D (I-2K Bus)
- Insat 2DT (Spacebus-1000)
- Insat 2E (I-2K Bus)
- Insat 3A (I-2K Bus)
- Insat 3B (I-2K Bus)
- Insat 3C (I-2K Bus)
- Insat 3D (I-2K Bus)
- Insat 3E (I-2K Bus)
- Insat 4A, 4B (I-3K Bus)
- Insat 4C, 4CR (I-2K Bus)
- Insat 4D (I-2K Bus)
- Insat 4E (I-2K Bus)
- Insat 4F (I-2K Bus)
- Insat 4G (I-3K Bus)
