SSW-110
SSTL (Surrey Satellite Technology)
The SSW-110 is a reaction wheel specifically designed for Low Earth Orbit (LEO) flight, providing attitude control for satellites.
Typed specifications33 values
Discloses 7 of 10 fields engineers filter by in this category (category median 5).
- Mass
- 2 600 g datasheet p.2 5 600 g max
- Envelope (L×W×H)
- Ø128x124 mm datasheet p.2
- Angular momentum storage
- 1.5 N·m·s datasheet p.2
- Max torque
- 11 mN·m max · datasheet p.2
- Speed range
- -5 000–5 000 rpm max speed +/- · datasheet p.2
- Supply voltage
- 24.1–35 V datasheet p.2
- Power consumption
- 10 W 5000 rpm, 20 °C (~) · datasheet p.2 1.2 W standby, 20 °C (~) | 5 W max | 180 W max
- Data interface
- CAN datasheet p.2 RS-422 full duplex
- Operating temperature
- -30 °C product page -20–50 °C
- Radiation tolerance (TID)
- 5 krad max · <5 krad at wheel electronics · datasheet p.2
- Design lifetime
- 7.5 years datasheet p.2
- Peak power
- 113 W maximum torque, 20 °C (~) · datasheet p.2
- Static imbalance
- 0.2 g·cm max · datasheet p.2
- Dynamic imbalance
- 0.4 g·cm² max · datasheet p.2
- Bearing type
- hybrid SSW-110-NLX-1500: oil lubricated hybrid ceramic bearings · datasheet p.2 ball SSW-110-OLX-1500: oil lubricated steel bearings
- Connector
- Single connector for communications & power datasheet p.1
- Survival temperature
- -35 °C product page -30–60 °C
- Random vibration
- 11 g RMS qualification, SSW-110-OLX-1500 · datasheet p.2 5–8.5 g RMS qualification, SSW-110-NLX-1500, axis dependent
- Flight heritage
- Utilised on numerous key SSTL missions since 2014; more than 40 flight units in orbit datasheet p.1
- Missions flown
- 40 min · more than 40 flight units in orbit · datasheet p.1
- Drive electronics
- integrated datasheet p.2
- Flywheel moment of inertia
- 0.003 kg·m² wheel · datasheet p.2
- Control modes
- current datasheet p.1 speed
Each value is typed with its unit and measurement condition and cites the datasheet page it was taken from. Nothing is guessed: a field that is absent here has not been published by the manufacturer. machine-extracted ✓ checked by NewSpace Market ✓ manufacturer confirmed by the manufacturer.
As published by the supplier20 lines, in the manufacturer's own wording
- Product name
- SSW-110
- Application
- Low Earth Orbit flight wheel
- Reaction Torque
- 200 mNm to +/-3900 rpm at 48.5 V DC
- Momentum
- 12 Nms @ +/-5000 rpm
- Speed range
- +/-5000 rpm
- Operational revolutions
- <20.1 billion
- Speed accuracy
- 0.4166 rpm (720PPR)
- Speed jitter
- 2 x 0.416 rpm
- Lifetime
- 15.25 years
- Operating temperature
- -30°C to +60°C
- Survival temperature
- -35°C to +70°C
- Electrical Interface
- Single male socket (D-type) 25 way
- Supply voltage
- 48.5 to 52.5 V DC
- Idle power consumption
- <5 Watts
- Maximum power consumption
- <180 Watts
- Communications
- RS485
- Internal speed controller update rate
- 5 Hz
- Maximum external telemetry update rate
- 5 Hz
- Dimensions
- Diameter 240 x 95 mm
- Mass
- <5.6 kg
About
The SSW-110 is a flight-proven reaction wheel developed by SSTL, optimized for use in Low Earth Orbit (LEO) missions. Reaction wheels are critical components for spacecraft attitude determination and control systems (ADCS), enabling precise pointing and stabilization of satellites. While specific features and configurations are not detailed on this page, its designation as a ‘Low Earth Orbit flight wheel’ indicates its suitability for the environmental and operational demands of LEO missions. This product is part of SSTL’s range of subsystems, which includes GNSS receivers and other ADCS components.
Documentation
Need the full ICD, test reports or a specific revision? Ask the supplier directly.