High Power Type 5 Solar Array Drive Assembly
The single axis High Power Solar Array Drive Assembly (SADA) is based on the Type 5 Rotary Incremental Actuator. This standard SADA meets up to 9 kilowatts of power transfer. The design is configured with a Harmonic Drive gear set driven by a Moog discrete permanent magnet stepper motor, potentiometer for position sensing and a high-power slip ring assembly for power transfer.
Key Features:
- Design is based on Moog Type5 rotary output stage
- Integrated slip ring assembly for power and data transfer is mounted on the rear of the actuator
- Integrated potentiometer position feedback
- Low weight
- Zero backlash
- Slip ring assembly capable to 6A derated current for power circuits
Specifications
| Parameter | Units | Basis | Data |
Output Step Angle |
Degrees | Standard | 0.0075 |
| Steps per Revolution | Steps | Standard | 48000 |
| Max. Output Step Rate | Steps/sec (Deg/sec) | Maximum | 300 (2.25) |
| Backlash | Degrees | Maximum | zero backlash |
| Operating Temperature Range | °C | Maximum | -50 to +70 |
| Torsional Stiffness | lb-in/Rad | Minimum | 250,000 |
| Moment Stiffness | lb-in/Rad | Minimum | 500,000 |
| Axial Stiffness | lb/in | Minimum | 200,000 |
| Radial Stiffness | lb/in | Minimum | 800,000 |
| Output Load Capability Axia | lbf | Nominal | 370 |
| Radial Stiffness | lbf | Nominal | 370 |
| Moment | Lb-in | Nominal | 430 |
| Output Torque | Lb-in | Minimum | 400 |
| Mechanical Accuracy | Degrees | Better than | +/- 0.02 |
| Unpowered Holding Torque | Lb-in | Minimum | 300 |
| Powered Holding Torque | Lb-in | Minimum | 600 |
| Slip-Ring Signal Circuits | 16 Rings derated at 1 A each | 16 Rings derated at 1 A each | 16 Rings derated at 1 A each |
| Actuator Power Consumption | Watts | Maximum | 20 |
| SADA Weight (without Harness) | Lb | Maximum | 11.00 |
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