Reaction Wheel RW35
EXA (Astro-und Feinwerktechnik)
The RW35 is a reaction wheel designed for small satellites, featuring integrated drive electronics, high torque and speed stability, and extensive housekeeping capabilities.
Typed specifications23 values
Discloses 6 of 10 fields engineers filter by in this category (category median 5).
- Mass
- 500 g as published, mode unspecified · vendor page (catalogue a 500 g max | 500 g max · wheel mass
- Envelope (L×W×H)
- 102mm*102mm*58mm datasheet p.1 102mm*102mm*58mm dimensions
- Angular momentum storage
- 0.1 N·m·s @5000rpm · datasheet p.1 0.1 N·m·s 5000rpm
- Max torque
- 5 mN·m Nominal · datasheet p.1 5 mN·m nom.
- Speed range
- 5 000 rpm max · maximum rotation speed · datasheet p.1 5 000 rpm
- Supply voltage
- 18 V as published, mode unspecified · vendor page (catalogue a
- Power consumption
- 9 W as published, mode unspecified · vendor page (catalogue a
- Operating temperature
- -20–50 °C datasheet p.1 -20–50 °C operational temperature range
- Radiation tolerance (TID)
- 2 krad as published, mode unspecified · vendor page (catalogue a
- Design lifetime
- 5 years Hardware · datasheet p.1 5 years lifetime hardware, printed 5
- Wheels in the unit
- 1 datasheet p.2
- Satellite class
- smallsat 100-500 kg datasheet p.2
- Continuous (nominal) torque
- 5 mN·m nominal torque, printed 0.005 Nm · datasheet p.1
- Nominal operating speed
- 5 000 rpm nominal rotation speed · datasheet p.1
- Flywheel moment of inertia
- 0 kg·m² moment of inertia · datasheet p.1
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 supplier17 lines, in the manufacturer's own wording
- Angular momentum
- 0.1 Nms
- Nominal rotation speed
- 5000 rpm
- Nomial torque (max. commandable)
- 0.005 Nm
- Moment of inertia (rotating mass)
- 1.9 x 10-4 kgm2
- Supply voltage
- 18 V - 34 V
- Stand by (motor off)
- ≤ 2.0 W
- Conservation of rotation speed1
- ≤ 4 W @ nominal rotation speed
- Max. acceleration1
- ≤ 9 W
- Mass
- < 0.5 kg
- Dimension single wheel with flange
- 102 x 102 x 58 mm³
- Operation
- -20 °C to +50 °C
- Non-operation
- -30 °C to +60 °C
- Storage
- -40°C to +65°C
- Radiation (total dose)
- 20 krad (behind 2 mm Al-Shield) in LEO
- Data interface
- RS-422 (RS-485 optional)
- Design lifetime
- 5 years
- Storage time
- 3 years (includes up to 240 hours of ground operations)
About
The RW35 Reaction Wheel is specifically engineered for small satellite applications, providing precise attitude control. It incorporates integrated wheel drive electronics with latch-up protection, ensuring robust operation. The system offers different operation modes for speed and acceleration, managed by model-based controllers, which contribute to its high torque and speed stability and low noise output. The RW35 provides extensive housekeeping data and includes internal compensation for friction and time delays. Its mechanical design, coupled with high levels of alignment and balancing, results in low emitted vibrations. The unit is designed to operate within a wide temperature range and is radiation-tolerant for Low Earth Orbit (LEO) missions.
Documentation
Need the full ICD, test reports or a specific revision? Ask the supplier directly.