Spacecraft Mechanisms Actuators & Servoactuators

Type 2 Solar Array Drive Assembly (SADA)

The single axis Type 2 Solar Array Drive Assembly (SADA) is based on the Type 2 Rotary Incremental Actuator. The standard actuator has been produced with numerous design variations to meet mission requirements for many applications. The features that vary are interface parameters and power transfer requirements. All of the listed Type 2 SADA designs are configured with harmonic drive gear sets, potentiometers for position sensing, and a slip ring assembly for power and signal transfer. Key specification parameters for a typical qualified unit are shown in the table below. The Type 2 SADA easily interfaces with the Moog 2 or 4 channel Electronic Control Unit for a complete system solution.

Specifications

Output Step Size
0.02 degrees
Output Torque
11 (Nm)
Operating Temperature Range
-50°C to +80°C
Mass
< 3.50 Kg including harness
Holding Torque Powered
9 Nm
Holding Torque Unpowered
4.5 Nm
Inertia Capability
28 Kg.m2
Power Slip Rings
34 rings @ 3.2 A
Signal Slip Rings
15 rings @ 1.0 A
Position Sensor
Potentiometer ± 0.36°

Our extensive product offering of Solar Array Drive Assemblies are flexible and customizable to your specific needs. For more information on Solar Array Drive Assemblies, or this specific model please contact our Chatsworth facility.