Electromechanical Flight Control Actuators

Parker Aerospace linear and rotary electromechanical actuators (EMAs) offer a safe and reliable means to control primary and secondary aircraft control surfaces, based on pilot or autopilot commands.
With over 25 years of electromechanical flight control actuation, Parker has a strong heritage in electromechanical actuation and motor control for aerospace applications. Our EMAs allow for electronic control conversion to mechanical displacement through using AC or DC motor controls. Our actuation is used to position the aircraft flight control surfaces, improving fuel efficiency, and reducing pilot workload. Our broad experience and EMA pedigree include both military and commercial applications.
Our EMA designs meet the most stringent safety regulations driven by the certification authorities (FAA and EASA) as well as military aircraft standards. In order to meet safety requirements, the EMAs can be designed with dual-redundant motors and dual-load paths (ball screw and safety rod) connecting an actuator to a flight control surface.
Our electromechanical actuators utilize a ball or Acme screw driven by electric brushless motors via a torque sum gear train. The EMA may have a primary load-activated passive brake (skewed roller) or an electric fail-safe electromechanical brake. The position of the flight control surface is determined by either linear or rotary variable differential transformers (LVDT, RVDT).