MicroWheel 1000
Microsat Systems Canada
The MicroWheel 1000 (MW 1000X and MW 1000DX) is a reaction wheel torque actuator and angular momentum storage device for mini-satellites and microsatellites, designed for satellites requiring less than 1000 mNms of momentum storage.
Typed specifications38 values
Discloses 7 of 10 fields engineers filter by in this category (category median 5).
- Mass
- 1 440 g max · datasheet p.2 1 440 g max · +0.06 kg w/ rate sensor
- Envelope (L×W×H)
- 129 mm × 129 mm × 89 mm datasheet p.2
- Angular momentum storage
- 1.1 N·m·s datasheet p.2 1.1 N·m·s storage capacity
- Max torque
- 30 mN·m datasheet p.2
- Supply voltage
- 28 V nom. · datasheet p.2 22–34 V 28 V +/- 6 V sourcing and sinking
- Power consumption
- 9 W Steady-state · datasheet p.2 1.5 W Idle | 50 W Peak | 1.5 W max · Idle | 1.5 W max · idle, 28 V, +25 C (+1 W w/ rate sensor) +3
- Data interface
- RS-422 datasheet p.2 RS-422 asynchronous RS-422/485 | RS-485 | RS-485 asynchronous RS-422/485
- Operating temperature
- -24 °C product page -24–61 °C
- Radiation tolerance (TID)
- 25 krad datasheet p.2 25 krad min · krad-Si TID at board level, plus > 1 mm shielding
- Design lifetime
- 7.5 years datasheet p.2 7.5 years min · design life
- Wheels in the unit
- 1 datasheet p.0
- Peak power
- 50 W max · peak, 28 V, +25 C · datasheet p.1
- Static imbalance
- 0.5 g·cm max · datasheet p.2 0.05 g·cm max · printed < 0.5 mg*m
- Dynamic imbalance
- 0.05 g·cm² max · datasheet p.2 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.2
- Satellite class
- microsat 10-100 kg MSCI's most popular wheel model for microsatellites · datasheet p.1
- Drive electronics
- integrated datasheet p.0
- 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 supplier11 lines, in the manufacturer's own wording
- Momentum
- 1.1 Nms
- Torque
- 30 mNm
- Mass
- < 1.44 kg
- Dimensions
- 129 mm × 129 mm × 89 mm
- Power
- < 1.5 W (Idle)
- Power (2)
- < 9 W (Steady-state)
- Power (3)
- < 50 W (Peak)
- 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 1000, part of MSCI’s High Performance Attitude Control product line, serves as a reaction wheel torque actuator and angular momentum storage device specifically for mini-satellites and microsatellites. This 1000-series MicroWheel is engineered for applications where momentum storage requirements are less than 1000 mNms. It functions as a “smart” sensor/actuator pair, integrating both a reaction wheel and an optional solid-state angular rate sensor. Both components are managed locally by an embedded micro-controller, which implements local speed and torque control loops for the reaction wheel. This allows the reaction wheel to precisely track speed or torque commands issued by a satellite’s attitude control computer. MSCI highlights the extensive flight heritage of its world-leading MicroWheels. The MW 1000 MicroWheels offer a simple, drop-in solution for satellite control, performing all motor control tasks internally via a serial data interface to generate the exact torque requested by the Attitude Control System (ACS) computer. 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.
Documentation
Need the full ICD, test reports or a specific revision? Ask the supplier directly.