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Several kinds of actuators and servo-actuators, both Fly-By-Wire (FBW) and manual, are designed by EA and are now in-service for helicopter and aerospace applications.

The servo-actuators are usually controlled by a feedback system: position sensors (LVDT) or pressure transducers allow constant monitoring of main characteristic values as well as control of servovalves and solenoids to guarantee the defined set point.

Other types of actuators are composed of a manifold and several cartridge valves piloted by solenoids or lever.