Satellites and subsystems > Attitude > Attitude actuators > Reaction wheels > 5 Nms RW4-5.0 Reaction Wheel
Key highlights
The Rocket Lab 5 Nms RW4-5.0 is a reaction wheel designed for satellite applications.
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Last updated: 2025-07-26
5 Nms RW4-5.0 Reaction Wheel
Technical specs
nominal momentum
±5.0 Nms
torque
±150 mNm
command/telemetry
Redundant RS-485
length
194 mm
width
192 mm
height
57.25 mm
mass
< 3.0 kg
supply voltage
24 V to 34 V (nominal 28V)
supply power (28 V in vacuum)
20 W @ 5.0 Nms, steady state
65 W @ 5.0 Nms, +75 mNm torque
108 W peak @ 4.4 Nms, +150 mNm torque
65 W @ 5.0 Nms, +75 mNm torque
108 W peak @ 4.4 Nms, +150 mNm torque
static imbalance (average)
< 3 g mm
dynamic imbalance (average)
< 200 g mm^2
operating temperature
-30 to 70 C
random vibration
14 Grms
radiation (TID)
50 kRad (bare board)
shock
1200g, 1kHz-10kHz
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