Aerospace

DTA - Rotary Actuator Product Range

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DTA100 DTA100 DTA200
DTA100
DTA100
DTA200
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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)
         

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