SpaceTech Deployment Mechanisms (SADA)
The SpaceTech Solar Array Drive Assembly (SADA) 44/22 enables the power transfer from the Solar Array Wing (SAW) to the satellite and rotation of the SAW towards the sun while the satellite is orbiting Earth. Its twist capsule principle uses a flat cable of AWG22 Wires that wraps and unwraps, while the rotation occurs. Thus, ensuring operation even in the most extreme environments such as space. The main application of our SADA is currently the use on communication satellite constellations in LEO.
SpaceTech SADA 44/22 - in detail
The SpaceTech SADA 44/22 allows for efficient solar array operation under harsh conditions in space (LEO).
- Qualified for LEO
- Cost-efficient solution
- SADA 44/22 is fully recurring and series production ready for large satellite constellations (up to 2 units per day in series)
SpaceTech integrates the Solar Array Drive Mechanisms and Solar Array Drive Electronics in one unit, enabling a highly compact and cost-efficient design.
- SADA 44/22 consists of:
- SADM (Solar Array Drive Mechanism) cable spiral
- SADM drivetrain (stepper motor, spur gear, harmonic drive assembly)
- SADE (Solar Array Drive Electronics)
- Housing
- SADA 44/22 uses a twist capsule principle: a flex tape wraps and unwraps as rotation occurs
- Through harness of 44 x AWG 22 wires
- Inner or outer mounting on S/C side wall possible
| Driving method: | Current controlled, micro stepping |
| Command interface: | UART (57.6kBaud) RS-422 or RS-485 available |
| Power interface: | Supply voltage: 22V … 36V Standby current: <=25mA Max load current: <0.3A |
| Motor type: | 2-phase stepper motor |
| Redundancy: | Cold redundant drive electronics |
| Connector: | DSUB-37 pins |
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