High Power Type 5-TC 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 10 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 Twist Capsule assembly for power transfer.
Key Features:
- Design is based on Moog Type5 rotary output stage
- Integrated twist capsule assembly for power and data transfer
- Integrated potentiometer position feedback
- Low weight
- Zero backlash
- Twist capsule capable of up to 10Kw power transfer
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 | -24 to +61 |
| Torsional Stiffness | lb-in/Rad | Minimum | 350,000 |
| 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 Axial | lbf | Nominal | 370 |
| Radial Stiffness | lbf | Nominal | 370 |
| Moment | Lb-in | Nominal | 430 |
| Output Torque | Lb-in | Minimum | 500 |
| Mechanical Accuracy | Degrees | Better than | +/- 0.02 |
| Unpowered Holding Torque | Lb-in | Minimum | 300 |
| Powered Holding Torque | Lb-in | Minimum | 600 |
| Twist Capsule Power Circuits | 75 circuits derated at 2.6 A each (150 lines) | 75 circuits derated at 2.6 A each (150 lines) | 75 circuits derated at 2.6 A each (150 lines) |
| Twist Capsule Signal Circuits | 47 lines derated at 0.50 A each | 47 lines derated at 0.50 A each | 47 lines derated at 0.50 A each |
| Range of Motion | Degrees | Maximum | +/-150° |
| Actuator Power Consumption | Watts | Maximum | 12 |
| SADA Weight (without Harness) | Lb | Maximum | 11.00 |
| Flight Heritage | Over 20 SADAs in Flight on GPS Satellites | Over 20 SADAs in Flight on GPS Satellites | Over 20 SADAs in Flight on GPS Satellites |
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