Satellites and subsystems > Attitude > Attitude actuators > Reaction wheels > Reaction Wheel - RW 1 Type B
Key highlights
The RW 1 is a flight proven high integrated Reaction Wheel with the following features:
• Separate wheel-drive electronic (WDE) for up to four Reaction Wheels
• PI controller for speed and acceleration
• Two different rotating masses available (Type A or Type B)
• Four different standard data interfaces available
• Low level emitted vibrations, due to the mechanical design and the high level of alignments and balancing
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Last updated: 2026-04-23
Reaction Wheel - RW 1 Type B
Technical specs
operating temperature
-20 to 50 C
mass
< 12 g
angular momentum storage
1.0e-4 @8000 rpm
idle power
< 0.50 W (WDE for 4 wheels)
< 0.25 W (WDE for 1 wheel)
< 0.35 W (WDE for 3 wheels)
< 0.25 W (WDE for 1 wheel)
< 0.35 W (WDE for 3 wheels)
length
21 mm
width
21 mm
height
12 mm
lifetime
1 year in low earth orbit
maximum torque
4e-6 N m
maximum angular speed
16380 rpm
power
< 0.525 W
peak power
< 0.625 W
angular speed
8000 rpm
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