Reaction Wheel

A high-performance alternative to propulsion based reaction control system, reaction
wheels provide spacecraft with control torque by means of momentum exchange between the satellite body and the rotating wheel. The increasing popularity of these wheels coupled with our commitment to high quality, fit-for-purpose components has resulted in NewSpace Systems (NSS) offering these wheels in a range of sizes (NRWA-T065, NRWA-T2 and NRWA-T6).

Typically, three to four reaction wheels are needed to provide full three-axis control of a
spacecraft. The additional integration of these wheels with external gyroscopes enables full three-axis control using inertial rates. With high torque stability, wheel momentum capacity and accurate speed control; the NSS reaction wheels are ideal for agile small satellite missions requiring accurate pointing 


• Wheel torque and momentum capacity suited to client mission requirements
• Current, speed and Torque control
• Simple digital interface to spacecraft bus
• Integration with an optional gyroscope for inertial rate control and inertial angle control modes possible
• Hermetically sealed
• Long demonstrated lifetimes


• High performance three-axis torque and momentum exchange actuators for agile small satellite missions
• Momentum bias
• Inertial rate control for accurate pointing of imagers


Our latest-generation wheel, the NRWA-T065, is TRL 9 and has extensive in-orbit heritage. Flying since 2014, this wheel has more than 3 million failure-free hours in-orbit with no reported SEU’s. Given the robust nature of the T065 wheel, this product has become a preferred choice for longer lifetime missions and constellation programmes.

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