Accession Number : ADD014058

Title :   Control Surface Dual Redundant Servomechanism.

Descriptive Note : Patent, Filed 11 Dec 84, patented 31 Jan 89,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Boldrin, Clete M ; McCorkle, Richard D ; Rice, Jimmy W ; Rustik, James J

Report Date : 31 Jan 1989

Pagination or Media Count : 6

Abstract : 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. Patents. (rh)

Descriptors :   *ACTUATORS, *CONTROL SURFACES, *CONTROL SYSTEMS, *MOTORS, *SERVOMECHANISMS, *TRANSDUCERS, AIRCRAFT, CONTROL, ELECTRICAL PROPERTIES, HYDRAULICS, INPUT, MOTION, PATENTS, PILOTS, POSITION(LOCATION), REDUNDANCY, SIGNALS

Subject Categories : Electrical and Electronic Equipment
      Flight Control and Instrumentation
      Aerodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE