Reaction Wheel RW25 for Small Satellites

RW25 Features:

  • One of the latest developments
  • Specially developed for Nano-satellite applications
  • Integrated electronics, allowing independent operation via its digital interface


Parameter RW 25
Angular momentum 30 mNms
Nominal rotation speed 5000 rpm
Nomial Torque (max. commandable) 2 mNm (more by design possible)
Communication SPI preferred (CAN possible)
Power interface
Supply voltage 5 V
Power Consumption for WDE and 1 Wheel
maintaining nominal rotation speed < 1.5 W
maximum consumption (max. torque @ max. speed) < 2.8 W
Mechanical interface
Mass 200 g
Dimension Single Wheel 50mm x 50mm x 25.5mm
Operation -20 °C to +50 °C
Non-operation -40 °C to +65 °C
Design lifetime
2 year in low earth orbit
5 years possible by design, but a life time test shall be performed for proof
Storage time 2 years (includes up to 240 hours of ground operations)
Design change flexibility without radical design change (mass, power may change) Increased/decreased angular momentum and torque possible