Accession Number : ADD013981

Title :   Flap System for Short Takeoff and Landing Aircraft.

Descriptive Note : Patent, Filed 10 Nov 86, patented 15 Nov 88,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Brine, Gerald T

Report Date : 15 Nov 1988

Pagination or Media Count : 9

Abstract : A flap system for deploying high lift flaps on short takeoff and landing aircraft. The flap system utilizes an activating mechanism that is used to extend a flap, a vane and a spoiler for maximum lift. The mechanism utilizes relatively few linkage pieces and attached to the flap a single pivot points. The flap is supported by an actuator and flap hinge support bracket. Increased mechanism rigidity and single pivot mountings allow use of roller and track guides at flap ends to smoothly guide flap movement and provide a fail-safe in case of pivot mounting failure. Spherical bearings are utilized for mounting of rollers and actuators in order to compensate for misalignment of the flap and the flap mechanism when used with tapered flaps on swept wing aircraft. The spoiler is joined by a guide link that adjusts spoiler position with flap movement in order to maximize lift. The spoiler can also be used conventionally by activation of actuator. Patents.

Descriptors :   *FLAPS(CONTROL SURFACES), *PATENTS, ACTIVATION, ACTUATORS, AIRCRAFT, AIRCRAFT LANDINGS, BEARINGS, FAILURE, HIGH LIFT, HINGES, LIFT, MISALIGNMENT, MOUNTING BRACKETS, MOUNTS, PIVOTS, POSITION(LOCATION), RIGIDITY, ROLLERS, SHORT TAKEOFF AIRCRAFT, SPHERES, SPOILERS, SWEPT WINGS, TAPER

Subject Categories : Aircraft
      V/STOL

Distribution Statement : APPROVED FOR PUBLIC RELEASE