About us
DTA – Rotary Actuator Product Range
Sener has developed in a co-funded progam with ESA a fully European family of rotary actuators for space applications, such as solar array drivers, optical mechanism drives, deployment mechanisms, antenna pointing mechanisms and Electrical ProPulsion Modules (EPPM) actuation.
DTA product range are versatile components that can be used on applications as:
- Deployable radiator
- Electrical propulsion module
- Generic antenna mechanisms
- Antenna reflector boom without tracking
- Antenna reflector boom with tracking system
- Large deployable structures
- Reconfigurable appendages or payloads on board telecom platforms.
Sener has developed in a co-funded progam with ESA a fully European family of rotary actuators for space applications, such as solar array drivers, optical mechanism drives, deployment mechanisms, antenna pointing mechanisms and Electrical ProPulsion Modules (EPPM) actuation.
DTA product range are versatile components that can be used on applications as:
- Deployable radiator
- Electrical propulsion module
- Generic antenna mechanisms
- Antenna reflector boom without tracking
- Antenna reflector boom with tracking system
- Large deployable structures
- Reconfigurable appendages or payloads on board telecom platforms.
The space qualifi ed DTA rotary actuators design is based on the heritage actuator concept developed by Sener and successfully flown on the European Space Agency missions SENTINEL-1, SENTINEL-2 and GAIA.
DTA product range main component are the Sener-developed SUM stepper motors family; with a large selection of options available. Different drive output, sensors and accessories are also available; like RF-waveguide, connectors and harness management hardware.
DTA 200 series is an enhanced evolution of the currently qualified DTA 100 series products, with improved technical performances for the most demanding applications on the space field.
| CHARACTERISTIC | Unit | DTA 100 Series | DTA 100 Series | DTA 200 Series |
| DTA 12-120-1 | DTA 12-100 | |||
| Size | mm | 133 x 120 (diam.) | 110 x 120 (diam.) | 110 x 120 (diam.) |
| Sensors | mm | Potentiometers | Hall effect contactless | Hall effect contactless |
| Electrical motor | SUM-88-160 | SUM-88-360 | SUM-88-160 | |
| Motor Step Angle | Deg | 2,25 | 1 | 2,25 |
| Reduction Ratio | 160:1 | 160:1 | Up to 400:1 | |
| Range | Full rotatation | Full rotatation | Full rotatation | |
| Resolution | Deg | 0.014 | 0,00625 | 0,0056 |
| Position accuracy | Deg | 0.005 | < 0,01 | 0.005 |
| Repeatability | Deg | 0.0021 | < 0,01 | 0.0021 |
| Torsional Stiffness | Nm/rad | 15000 ON/OFF @ 7.5Nm 18500 ON/OFF @ 25Nm 28500 ON @ 50 Nm |
15000 ON/OFF @ 7.5Nm 18500 ON/OFF @ 25Nm 28500 ON @ 50 Nm |
>54000 |
| Shaft Load Capability Axial | N | > 10500 | > 10500 | > 10500 |
| Shaft Load Cap. Transverse | N | > 8 500 | > 8 500 | > 8 500 |
| Shaft Load Capability Moment | Nm | 277 | 277 | 277 |
| Unpowered holding torque (detent) | Nm | 29 (static,650 deg/s) | > 25 | > 25 |
| Powered holding torque | Nm | 165 (2ph, full) | > 100 | > 100 |
| Running torque | Nm | 79 (2ph ON, parallel) | > 60 | > 60 |
| Total Assembly Weight | Kg | 2,2 | 2 | 2 |
| Thermal range: Operating | ºC | –45 to +105 | –45 to +105 | –45 to +105 |
| Technology Research Level (TRL) | 8 | 8 (Q12018) | 6 (Q42018) | |
