Satellites and subsystems > Attitude > Attitude actuators > Reaction wheels > HT-RSI High Motor Torque Momentum and Reaction Wheels 14 – 68 Nms with integrated Wheel Drive Electronics
Key highlights
TELDIX® Space Wheels deliver industry leading capability and reliability for spacecraft attitude control. They are available with an angular momentum storage capacity spanning a range between 0.04 Nms and 68 Nms.
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Last updated: 2025-07-29
HT-RSI High Motor Torque Momentum and Reaction Wheels 14 – 68 Nms with integrated Wheel Drive Electronics
Technical specs
operational speed range
± 6000 rpm (RSI 68-170/60)
± 4500 rpm (RSI 18-220/45)
± 3,000 rpm (RSI 30-280/30)
± 4500 rpm (RSI 18-220/45)
± 3,000 rpm (RSI 30-280/30)
torque
± 280 mNm (RSI 30-280/30) [motor torque at nominal speed]
± 220 mNm (RSI 18-220/45)
± 170 mNm (RSI 68-170/60) [motor torque at nominal speed]
± 220 mNm (RSI 18-220/45)
± 170 mNm (RSI 68-170/60) [motor torque at nominal speed]
angular momentum storage
68 N m s at nominal speed (RSI 68-170/60)
30 N m s at nominal speed (RSI 30-280/30)
18 N m s at nominal speed (RSI 18-220/45)
30 N m s at nominal speed (RSI 30-280/30)
18 N m s at nominal speed (RSI 18-220/45)
peak power
150 W (maximum torque at nominal speed)
speed limiter (EMF)
< 7300 rpm
power consumption
< 20W (steady state at nominal speed)
input current
< 2 A
supply voltage
98 to 102 V
lifetime
> 15 years (in orbit)
operating temperature
-20 to 70 C
survival temperature
-40 to 70 C
qualification/protoflight temperature
-25 to 75 C
mass
< 8.9 kg (RSI 68-170/60)
< 8.5 kg (RSI 30-280/30)
< 6.3 kg (RSI 18-220/45)
< 8.5 kg (RSI 30-280/30)
< 6.3 kg (RSI 18-220/45)
height
124 mm
diameter
347 mm
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