MicroWheel 200
Microsat Systems Canada
The MicroWheel 200 (MW 200X) is a reaction wheel torque actuator and angular momentum storage device for mini-satellites and microsatellites, part of MSCI’s High Performance Attitude Control product line.
Technical specifications
- Momentum
- 0.18 Nms
- Torque
- 30 mNm
- Mass
- < 0.94 kg
- Dimensions
- 89 mm × 102 mm × 89 mm
- Power
- < 1.5 W
- Supply voltage
- 28 V ± 6 V
- Operating temperature
- -24 °C to +61 °C
- Lifetime
- > 7.5 years
- Interface
- Asynchronous RS-422/485
About
The MicroWheel 200 (MW 200X) is designed for satellites requiring less than 200 mNms of momentum storage. It functions as a “smart” sensor/actuator pair, incorporating both a reaction wheel and an optional solid-state angular rate sensor. These components are locally operated by an embedded micro-controller, which implements local speed and torque control loops for the reaction wheel. This allows the reaction wheel to accurately track speed or torque commands from a satellite’s attitude control computer. MSCI’s MW 200X MicroWheels provide a simple, drop-in solution for satellite control, performing all motor control tasks internally to generate precisely the torque requested by the Attitude Control System (ACS) computer via a serial data interface. The MW 200X’s key capabilities include a spaceflight-proven design, low power consumption, and an all-in-one control and navigation solution when equipped with the optional rate sensor. MSCI is proud of the extensive flight heritage of the MW 200X MicroWheels, with over 47 years of operational wheel-hours in LEO orbit across three separate missions.
Documentation
Need the full ICD, test reports or a specific revision? Ask the supplier directly.