Accession Number : ADD006707

Title :   Shift Mechanism for Aircraft Control System.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Townsend,Richard E

Report Date : 16 Oct 1979

Pagination or Media Count : 12

Abstract : The invention concerns a shift mechanism for an aircraft control system for reversibly shifting the control system of the aircraft between a power mode and a manual mode of operation. The shift mechanism has a stick control input connection, a primary control surface output connection and a secondary control surface output connection. The input connection is made to a bell crank-shaped housing which is pivoted to the aircraft structure and the output connections are connected to an idler arm and connecting member, respectively, that are pivoted to the housing. The connecting member is moved by an actuator between a first position wherein its pivotal connection to the secondary control surface output connection is aligned with the pivotal connection of the housing to the aircraft and a second position of non-alignment. During this second position, the primary control surface output connection is disconnected from the idler arm. As a consequence, during the first position of the connecting member the primary control surface is responsive to the movement of the housing (power mode) while during the second position of the connecting member the secondary control surface is responsive to the movement of the housing (manual mode).

Descriptors :   *Patents, *Aircraft, *Control systems, *Shifting, *Control sticks, *Power, *Manual operation, Actuators, Input, Output, Control surfaces, Housings, Connectors, Inventions

Subject Categories : Aircraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE