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.
Typed specifications38 values
Discloses 6 of 10 fields engineers filter by in this category (category median 5).
- Mass
- 940 g max · +0.06 kg w/ rate sensor · datasheet p.1 1 000 g max · with rate sensor | 940 g max · without rate sensor
- Envelope (L×W×H)
- 89 mm × 102 mm × 89 mm datasheet p.1
- Angular momentum storage
- 0.18 N·m·s datasheet p.1 0.18 N·m·s storage capacity
- Max torque
- 30 mN·m datasheet p.1
- Supply voltage
- 28 V nom. · datasheet p.2 28 V | 22 V min | 34 V max | 22–34 V 28 V +/- 6 V sourcing and sinking
- Power consumption
- 7 W max · Steady-state (28 V, +25 °C) · datasheet p.1 2.5 W max · Idle (28 V, +25 °C) with rate sensor | 1.5 W max · Idle (28 V, +25 °C) without rate sensor | 1.5 W max · idle, 28 V, +25 C (+1 W w/ rate sensor) | 50 W max · Peak (28 V, +25 °C) +1
- Data interface
- RS-422 Asynchronous · datasheet p.1 RS-422 asynchronous RS-422/485 | RS-485 Asynchronous | RS-485 asynchronous RS-422/485
- Operating temperature
- -24 °C product page -24–61 °C
- Radiation tolerance (TID)
- 25 krad at board level, plus > 1 mm shielding · datasheet p.1 25 krad min · krad-Si TID at board level, plus > 1 mm shielding
- Design lifetime
- 7.5 years min · datasheet p.1 7.5 years min · design life
- Peak power
- 50 W max · peak, 28 V, +25 C · datasheet p.1
- Static imbalance
- 0.5 g·cm max · datasheet p.1 0.05 g·cm max · printed < 0.5 mg*m
- Dynamic imbalance
- 0.05 g·cm² max · datasheet p.1 0.5 g·cm² max · printed < 0.05 mg*m2
- Survival temperature
- -29–66 °C datasheet p.1
- Flight heritage
- Extensive flight history datasheet p.1
- Drive electronics
- integrated datasheet p.1
- Control modes
- torque closed-loop torque and momentum management · datasheet p.1 momentum closed-loop torque and momentum management
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 supplier9 lines, in the manufacturer's own wording
- 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.