Satellites and subsystems > Attitude > Attitude actuators > Reaction wheels > RDR 68 Momentum and Reaction Wheels 14 – 68 Nms with external Wheel Drive Electronics
Key highlights
Put more than 40 years of Collins Aerospace space-wheel technology and 7,300 years of in-orbit operational time to work for you. Our Momentum and Reaction Wheels feature external Wheel Drive Electronics (WDE) at 14-68 Nms, with cascadeable WDE 8-45.
Our TELDIX® space wheels are available with an angular momentum storage capacity spanning a range between 0.04 Nms and 68 Nms. And they accommodate the requirements of attitude control systems for spacecraft weighing between 30 kg and 7,000 kg. We also can customize a solution for you.
- Power/loss torque optimized
- Hermetically sealed
- Modular configuration
- Fast adaptation to customer requirements
- Includes space-qualified subsystems (rotor, motor, bearing unit and electronics)
- Offers a broad spectrum of different wheel types
- Thermal optimized
- For satellites weighing 1,500 to 5,000 kg
- High reliability through heritage
- Usable as a momentum or reaction wheel
- More than 15 years of lifetime design
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Last updated: 2023-05-18
RDR 68 Momentum and Reaction Wheels 14 – 68 Nms with external Wheel Drive Electronics
Technical specs
power
20 W (Steady state at nominal speed)
torque
75 mNm (Motor torque at nominal speed)
diameter - wheel (RDR)
345 mm
speed limiter (EMF)
< 7500 rpm
standby power consumption
< 5 W
maximum power
90 W (Maximum torque at nominal speed)
angular momentum storage
68 Nms at nominal speed
mass
8.85 kg (RDR + WDE)
lifetime
> 15 years (in orbit)
survival temperature
-40 to +75 °C (synthetic oil)
-20 to +60 °C (mineral oil)
-20 to +60 °C (mineral oil)
operating temperature
-20 to +70 °C (synthetic oil)
-5 to +50 °C (mineral oil)
-5 to +50 °C (mineral oil)
Input current
< 4.2 A
supply voltage
24 to 51 V DC
height - wheel (RDR)
118 mm
operational speed range
±6000 rpm
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