This actuator was designed to control the thrust vector angle on rocket engines. It is designed for high vibration and shock loads, and has excellent frequency response characteristics. It also was designed for short-term immersion in salt water, as evidenced by the protective cover on the electro-fueldraulic servo-valve (EFSV) and hard anodic coatings. Redundancy is accomplished via dual-coils in the EFSV first-stage torque motor.
Embedded within the single-ended piston is a dual-element LVDT, which provides two independent channels of position feedback to the external controller. A single D38999 Series III connector on the EFSV housing communicates all signals to and from the controller. An optional electronic control unit (ECU) is available.
|Power||28 VDC per MIL-STD-704|
|Command Signal||-10 to +10 mA (can be tailored to application)|
|Media||Hydraulic Fluids or Hydrocarbon-Based Fuels|
|Supply Pressure||3000 psi max.|
|Temperature Range||-40°F to +250°F|
|Static Force||9700/7000 lb Extension/Retraction, 2000 psi Supply|
|Step Response||170/210 msec Extension/Retraction, Full Scale, 1900 psi Supply|
|Frequency Response||14 Hz @ -3dB, 1400 psi Supply, Unloaded|
|ServoValve||Dual-Coil, Nozzle-Flapper, Damped First-Stage|
|Position Feedback||Dual-Channel LVDT, 4.0V, 2.0kHz Sine|
|Materials of Construction||7075-T7351 Aluminum, Stainless Steel|
|Dimensions||17.25 L x 4.34 W x 7.57 H (overall)|
|Weight||13.4 lb (dry)|