Reaction Wheel RW90 for Small Satellites
RW90 Features:
- Integrated wheel drive electronics with latch-up protection
- Different operation modes for speed and acceleration using model based controllers
- High torque and speed stability (low noise)
- Provides extensive housekeepings (e.g.: speed, voltage, current, temperatures)
- Internal compensation of friction and time delays
- Low level emitted vibrations, due to the mechanical design and the high level of alignments and balancing
RW90
| Parameter | RW 90 | Remark |
| Angular momentum | 0.35 Nms | @7800 rpm |
| Nominal rotation speed | 6000 rpm | |
| Nomial reaction torque | 0.015 Nm | Max. commandable deliverable output torque over the whole speed range |
| Power interface | ||
| Supply voltage | ||
| Power consumption |
≤ 1.8 W
≤ 2.7 W
≤ 3.5 W
15 W
|
Stand by (motor off)
@ 3000 rpm
@ 6000 rpm
Maximum (max. torque/max. speed) |
| Mechanical interface | ||
| Mass | ||
| Moment of inertia |
4.35 x10-4 kgm2
|
Rotating mass |
| Dimension | 100mm x 100mm x 60mm | |
| Temperatures | ||
| Operation | ||
| Start-up | -30 °C to +60 °C | |
| Survival temperature | -40 °C to +65 °C | |
| Data interface | RS485/RS422 | |
| Design lifetime | > 7 years | In LEO |
| Storage time | > 3 years | (incl. 240 h of ground operation) |