United States of America As Represented by the Secretary of the Air Force

Clete M Boldrin

James J Rustik

Richard D McCorkle

Jimmy W Rice

A dual redundant servomechanism for moving aircraft control surfaces is disclosed. The servomechanism is of the type whose input commands, from the pilot of the aircraft, are transmitted electrically. Force fight, which is associated with such dual servomechanisms when they are connected to a common aircraft control surface, is minimized. This is accomplished by providing the control system for each servomechanism with input signals which are electrically summed. Each control system includes electrical transducers which provide a signal indicative of actuator position and the pressure associated with the hydraulic motor used in each servomechanism.

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Renton, WA, United States of America

Clete M Boldrin