Common Electro-Hydrostatic Actuator (CEHA)

Electrohydrostatic Actuators (EHAs) are fully self-contained actuation systems that combine design elements from electric and electrohydraulic actuation. They receive power from an electric source and transform an input command signal into motion. The systems main components are a servomotor, hydraulic pump, accumulator and hydraulic ram.

Performance Advantages of EHAs for Launch Vehicles

  • Ease of vehicle integration
  • Reduced maintenance and operating costs
  • Simplified pre-launch checkouts
  • Low quiescent power draw