CubeSat Reaction Wheels Control System SatBus 4RW0

The minimum order quantity for this subsystem is 20 pieces.

NanoAvionics has designed reaction/momentum wheels (RW) which can be ordered as separate components or integral 4 reaction wheels redundant 3-axis control system, enabling precision pointing of the small satellite.

Reaction wheels includes DC brushless motors assembled in sealed housing providing no particle emissions and preventing contamination of peripheral devices.

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The minimum order quantity for this subsystem is 20 pieces.

Reaction wheels includes DC brushless motors assembled in sealed housing providing no particle emissions and preventing contamination of peripheral devices.

General Features:
- Interface: SPI / UART
- DC Voltage: 5 V
- Sealed design – no particles emissions
- Redundant 4 reaction wheel design or
- Single reaction wheel as a separate component
- IPC – A600H class 3 assembly
Single Reaction Wheel Properties:
- Dimensions: 43.5 mm x 43.5 mm x 24 mm
- Temperature range: -40 °C to +85 °C
- Mass: 137 g
Single Reaction Wheel Performance:
- Maximum speed: 6500 RPM
- Maximum torque: 3.2 mNm
- Maximum momentum storage: 20 mNms
- Power consumption (Idle): 45 mW
- Power consumption steady state (1000 RPM): 150 mW
- Power consumption Peak: 3250 mW
- Speed set resolution 0.1 RPM
- Speed control accuracy 500 – 6500 RPM : ± 1 (including ripple)
- Speed control accuracy 100 – 500 RPM : ± 3 (including ripple)
- Total residual disbalance < 50 mg*mm
4RW System Properties:
- Dimensions: 92.5 mm x 92.5 mm x 51.3 mm
- Temperature range: -40 °C to +85 °C
- Mass: 665 g (excluding harness)
4RW System Performance:
- Maximum torque:
  - around X axis: 5.9 mNm
  - around Y axis: 5.9 mNm
  - around Z axis: 2.5 mNm (5 mNm when all 4 RWs are used)
- Maximum momentum storage:
  - around X axis: 37 mNms
  - around Y axis: 37 mNms
  - around Z axis: 15.6 mNms (31.3 mNm when all 4 RWs are used)
- Power consumption (Idle): 180 mW
- Power consumption steady state (1000 RPM each): 600 mW
- Power consumption Peak: 6000 mW