Summary

Fully integrated reaction wheel unit for high performance satellite attitude control for Micro and Nano-satellite missions with mission lifetime up to 5 years (minimum).

The REWL-50 wheel is an integrated 3-phase outrunner BLDC with 10 rare-earth magnets in the rotor and 9 coils in the stator. The rotor is axially suspended between two hybrid ceramic high precision bearings chosen for long life and low friction in extreme conditions. The wheel is commutated by its own internal microcontroller, which runs the control loop to control speed and acceleration upon commands from the ADCS computer.

Each wheel has a dual CAN bus interface with CSP making them accessible to the satellite communication bus. The wheels are fitted with basic telemetry sensors: Temperature, vibration, current, speed.

Our recommendation for complete 3 axis control is to use the REWL-450 momentum wheel assembly, which uses four powerful REWL-50 reaction wheels that are integrated into the classic tetrahedron configuration for the benefit of both redundancy and elimination of zero crossing the wheel speeds.

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Last updated: 2020-06-23

REWL-50

12,500 EUR (ROM)

Specs

mass
129 g
angular momentum storage
42 mN m s
voltage
5 — 12 V
length
64 mm
height
27 mm
maximum torque
> 5 mN m
angular speed
10000 rpm
operating temperature
-40 — 70 C
width
64 mm

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