Satellites and subsystems > Attitude > Attitude actuators > Reaction wheels > 1Nms RW-1.0 Reaction Wheel
Key highlights
1Nms RW-1.0 Reaction Wheel is Rocket Lab's largest wheel, suitable for 100 kg Earth-observation missions.
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Last updated: 2025-07-23
1Nms RW-1.0 Reaction Wheel
Technical specs
nominal momentum
± 1.0 N m s
torque
± 100 mN m
command/telemetry
Redundant RS-485
length
148 mm
width
146 mm
height
45 mm
maximum mass
1.4 kg
static imbalance
< 4 g mm (average 2 g mm)
dynamic unbalance
< 80 g mm² (average 25 g mm²)
supply voltage
24 V to 34 V (nominal 28 V)
nominal supply voltage
28 V
power (28 V in vacuum)
Steady state max: 5 W
Peak power at max torque: 99 W
Peak power at max torque: 99 W
operating temperature
-30 to 85 C
random vibration
20.0 Grms
radiation (TID)
50 krad (board level)
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