SSTL GEO Wheel (SSW-200)
Surrey Satellite Technology Limited
Reaction wheel for GEO platforms, 12Nms momentum, flown on Eutelsat Quantum (2021).
Technical specifications
- Momentum
- 12Nms at up to ±5000rpm
- Torque
- 200mNm
- Design life
- 15.25 years
- Mass
- <5.6kg
- Dimensions
- Ø240 x 95mm
- Supply voltage
- 48.5-52.5V DC
- Power
- <180W max
- Interface
- RS485
- Flight heritage
- Eutelsat Quantum, launched 2021
- TRL
- 9 (flight-proven)
About
The SSTL GEO Wheel (SSW-200) is a reaction wheel developed for Airbus GEO satellite platforms, providing 12Nms of angular momentum at up to ±5000rpm and 200mNm of torque. It is designed for a 15.25-year mission life, weighs under 5.6kg, and measures Ø240 x 95mm. It operates on a 48.5-52.5V DC supply, draws under 180W at maximum power, and communicates over RS485. The wheel flew on Eutelsat Quantum, launched in 2021.
Documentation
Need the full ICD, test reports or a specific revision? Ask the supplier directly.
