>[!summary] >[[Sinclair Interplanetary]]’s first wheel design, and still the most popular. First launched in April 2008, there are now more than 50 units on-orbit. Many of these are onboard the University of Toronto SpaceFlight Lab's GNB series of spacecraft. They fit comfortably into a 6U to 12U cubesat. > 🔗 Official Page: https://www.rocketlabusa.com/space-systems/satellite-components/reaction-wheels/ 📋 Data Sheet: [[RW-0.03-Datasheet-v3.0.pdf]] ![[Pasted image 20250108214328.png]] ## Specs | Parameter | Value | | ------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------- | | Momentum (Nominal) | ±0.03 Nms | | Momentum (Peak) | ±0.04 Nms (at 5 V) | | Torque | ±2 mNm at 0.02 Nms<br>±0.5 mNm at 0.04 Nms (at 5 V) | | Control Mode | Speed or Torque | | Command/Telemetry | UART/ASYNC | | Mechanical Dimensions | 50 mm x 50 mm x 40 mm | | Mass | 183 g | | Supply Voltage | 3.5 V to 6.0 V (nominal 5 V) | | Power (28 V Vacuum) | 1.8 W @ 0.02 Nms, +2 mNm<br>0.3 W @ 0.04 Nms steady state<br>0.1 W @ 0.01 Nms steady state | | Environment (Thermal) | −30°C to +85°C (operating) | | Environment (Vibration) | 12.87 gRMS | | Environment (Radiation) | 24 krad (board level) | | Flight Heritage (As of August 2 2024) | 87 units on orbit with 446 years of heritage since 2008.<br>Common design with RW-0.01: additional 19 units, 92 years since 2014. |