DTA 1200. High Detent Torque, space qualified general purpose rotary actuator

The DTA 1200  is the first qualified product in the family of high detent torque rotary actuators. The development activities were funded by means of own R&D&i resources and with the support of ESA/CDTI through ARTES programs.

This family of products is suitable for both the institutional space market and the telecommunications market, with possible applications in platforms such as Spacebus Neo and Neosat, among others.

Flight references:

This product is a direct evolution of the HDRA actuator, which has flown in the SAR deployment mechanism of the Sentinel-1 satellite and the Gaia Deployable Sunshield Assembly.

Description:

• 2- or 4-phase electric stepper motor with redundant windings.
• HD gear providing high reduction ratio, excellent torque capacity and torsional stiffness.
• Magnetic brake, with high detent torque and zero electricity consumption.
• Enhanced positioning accuracy and repeatability. Excellent angular resolution and high stiffness.

Applications:

• Electric Propulsion Pointing Mechanisms (EPPM).
• Antenna pointing with or without tracking system.

Chart of characteristics:

Variants:

• Use of waveguides or wiring routing through the central opening.
• Use of different types of sensor (potentiometers, CAPS, etc.).
• Available in biaxial gimbal configuration.
• Electrical I/F by means of discrete wires or connectors.
• Possibility of adding heaters to the outside or the inside of the device.