VRW-B-02 Reaction Wheel
VECTRONIC Aerospace GmbH
Compact low-momentum reaction wheel for small satellites, 0.2 Nms angular momentum.
Key figurescomparable across the catalogue
- Mass
- 1 kg
- Power
- 4.5 W
- Largest dimension
- 70 mm
Normalised to common units so this product can be compared with others in its category. The supplier's own wording is below.
As published by the supplier
- Dimensions
- 70 mm x 70 mm x 48 mm
- Mass
- 1.0 kg
- Max. angular momentum
- 0.2 Nms
- Max. torque
- ± 20 mNm
- Max. speed
- ± 6000 rpm
- Input voltage range
- 9 VDC to 36 VDC
- Power consumption (steady state, max speed)
- <4.5 W
- Power consumption (max torque, max speed)
- <45 W
- Operating temperature range
- -20°C to +70°C
- Signal interface
- RS422 / RS485 / CAN
- Moment of inertia (rotor)
- 3.4×10⁻⁴ kgm²
- Speed control loop accuracy (2σ)
- 0.1 rpm
- Unbalance static/dynamic
- < 1 gmm / 80 gmm²
- Radiation tolerance
- >20 krad
About
The VRW-B-02 is the smallest member of VECTRONIC Aerospace’s VRW-series reaction wheel family, designed as an actuator that influences spacecraft rotational motion through angular momentum exchange. It is built around a brushless DC motor, rotor, wheel drive electronics and housing, with speed control implemented via a model-supported PI loop running on a 32-bit microprocessor and a low-noise, high-efficiency four-quadrant PWM drive. The wheel supports both torque control and speed control modes over RS422/RS485/CAN interfaces and offers a nominal in-orbit lifetime exceeding 45,000 hours, with radiation tolerance above 20 krad for LEO small-satellite missions.
Documentation
Need the full ICD, test reports or a specific revision? Ask the supplier directly.