NEXTAR
Manufacturer | NEC Space Systems |
---|---|
Country of origin | Japan |
Applications | Earth observation |
Specifications | |
Spacecraft type | Earth observation |
Dry mass | 250 kg (550 lb) |
Payload capacity | up to 250 kg (550 lb) |
Dimensions | 950 mm × 950 mm × 950 mm (37 in × 37 in × 37 in) (W×D×H) |
Power | Up to 600 W |
Batteries | Li-ion |
Regime | Low Earth orbit |
Design life | 3 to 5 years |
Production | |
Status | In Production |
NEXTAR (from NEC Next Generation Star) is a Low Earth orbit Earth observation satellite bus designed and manufactured by NEC Space Systems of Japan.[1][2] This three axis stabilized platform has a bus dry mass of 250 kg (550 lb), it can carry payloads up to 250 kg (550 lb) and 600 W. It uses tri-junction GaAs has an expected life between 3 and 5 years.[1]
Its telemetry and control subsystem includes S band and X band channels.[1]
Platform models[]
As of 2014, there are three different models of the NEXTAR standardized platform. All feature a common core of features like using the SpaceWire communications protocol, the SpaceCube2 on-board computer and autonomous control functions. The different models are:[3]
- NX-300L: Low Earth orbit platform for small observation satellites in the 300 to 500 kg (660 to 1,100 lb) range. It was born out of the work and is used mainly for Earth observation applications.[3][4]
- NX-1500L: Low Earth orbit platform for medium observation satellites in the 1,000 to 1,500 kg (2,200 to 3,300 lb) range. It began with the work on GCOM-W and is used mainly for Earth observation applications.[3][4]
- NX-G: Geosynchronous orbit platform for small communication satellites in the 1.5 to 3 t (1.7 to 3.3 tons) range. Based on the work of the WINDS satellite, it will be used mainly for communications applications.[3][4]
List of satellites[]
Satellites using the NEXTAR platform.[1]
See also[]
- Star Bus – Another comparable satellite bus made by Orbital ATK.
References[]
- ^ a b c d "NEXTAR". NEC. Retrieved 2016-08-09.
- ^ Wade, Mark. "NEXTAR NX-300L". Retrieved 2016-08-09.
- ^ a b c d Adachi, Masaki (July 2, 2014). "Introduction to NEC Space Business" (PDF). Space Systems Division NEC Corporation. Archived from the original (PDF) on 2016-08-31. Retrieved 2016-08-31.
- ^ a b c Kallender-Umezu, Paul (November 24, 2014). "Japan's NEC Looks To Expand Commercial Market Footprint". Retrieved 2016-08-31.
External links[]
Categories:
- Satellites of Japan
- Satellite buses
- Communications satellite stubs
- Spacecraft stubs