Reaction Wheel RW35 for Small Satellites
RW35 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
- Internal compensation of friction and time delays
- Low level emitted vibrations, due to the mechanical design
and the high level of alignments and balancing
RW35
| Parameter | RW 35 |
| Angular momentum | 0.1 Nms |
| Nominal rotation speed | 5000 rpm |
| Nomial Torque (max. commandable) | 0.005 Nm |
| Moment of inertia (rotating mass) |
1.9 x 10-4 kgm2 |
| Power interface | |
| Supply voltage | 18 V - 34 V |
| Power Consumption | |
| Stand by (motor off) | ≤ 2.0 W |
|
Conservation of rotation
speed1
|
≤ 4 W @ nominal rotation speed |
|
Max. acceleration1 |
≤ 9 W |
| Mechanical interface | |
| Mass | < 0.5 kg |
| Dimension Single Wheel with flange | 102 x 102 x 58 mm³ |
| Temperatures | |
| Operation | -20 °C to +50 °C |
| Non-operation | -30 °C to +60 °C |
| Storage | -40°C to +65°C |
| Radiation (total dose) | 20 krad (behind 2 mm Al-Shield) in LEO |
| Data interface | RS-422 (RS-485 optional) |
| Design lifetime | 5 years |
| Storage time | 3 years (includes up to 240 hours of ground operations) |