Reaction Wheel RW35 for Small Satellites

RW35 Features:

  • Integrated wheel drive electronics with latch-up protection
  • Different operation modes for speed and acceleration using model based controllers
  • High torque and speed stability (low noise)
  • Provides extensive housekeepings
  • Internal compensation of friction and time delays
  • Low level emitted vibrations, due to the mechanical design
    and the high level of alignments and balancing


Parameter RW 35
Angular momentum 0.1 Nms
Nominal rotation speed 5000 rpm
Nomial Torque (max. commandable) 0.005 Nm
Moment of inertia (rotating mass)
1.9 x 10-4 kgm2
Power interface
Supply voltage 18 V - 34 V
Power Consumption
Stand by (motor off) ≤ 2.0 W
Conservation of rotation
≤ 4 W @ nominal rotation speed
Max. acceleration1
≤ 9 W
Mechanical interface
Mass < 0.5 kg
Dimension Single Wheel with flange 102 x 102 x 58 mm³
Operation -20 °C to +50 °C
Non-operation -30 °C to +60 °C
Storage -40°C to +65°C
Radiation (total dose) 20 krad (behind 2 mm Al-Shield) in LEO
Data interface RS-422 (RS-485 optional)
Design lifetime 5 years
Storage time 3 years (includes up to 240 hours of ground operations)