A New Development in Multiplex Electro‐hydraulic Actuators: A detailed exposition of the design philosophy which has led to the development of a new multiplex actuator Available to Purchase

THE continuing development of aircraft operational concepts has in recent years resulted in the emergence of a variety of flight control functions which are essential to the safety of the aircraft and which moreover have to be performed automatically, the task being either too difficult for the human pilot, or at least so difficult as to command so much of his attention that his ability to carry out other functions is impaired. Among these functions may be instanced automatic landing, autostabilisation of V.T.O.L. aircraft in the hovering flight mode, the autostabilisation of an aircraft in some part of the flight regime in which its own natural stability is negative, and the autopiloting of aircraft operating at extremely low relative altitudes, to avoid collision with the terrain.