Airplane trailing edge flap retracting mechanism

Abstract

The invention belongs to the airplane design technology and relates to the improvement on an airplane trailing edge flap retracting mechanism. The airplane trailing edge flap retracting mechanism comprises a wing rear spar and a flap leading edge stringer and is characterized in that an outer rocker compound [1], an extension restraining rocker component [2] and an inner rocker component [3] are connected with the wing rear spar and the flap leading edge stringer to form the airplane trailing edge flap retracting mechanism. The airplane trailing edge flap retracting mechanism of the invention has a small fairing, a simple structure, light weight and a high space utilization rate and can meet the requirements on the aerodynamic efficiency of the flap. In the invention, the wing extension space occupied by the retracting mechanism at a retraction position is converted into the chordwise displacement produced by the flap when the retracting mechanism is at an extension position, so the problem of airplane performance reduction caused by an overlarge fairing of the flap retracting mechanism is solved effectively.

Description

technical field [0001] The invention belongs to the aircraft design technology and relates to the improvement of an aircraft trailing edge flap retractable mechanism. Background technique [0002] At present, the trailing edge flap retractable mechanisms used on transport aircraft are mainly divided into three categories: suspension type, track type and composite type. The suspension flap mechanism realizes the retraction movement of the flap rudder surface through a mechanism composed of a series of rocker arms and connecting rods. The movement of the mechanism is only deployed in the chord direction of the wing, resulting in a large size of the fairing of the mechanism, and the mechanism more complicated. The orbital flap mechanism controls the trajectory of the flap rudder surface through a set of parallel rails. The mechanism is relatively simple, but it is heavy, and the design and manufacture of the rails are difficult, and the size of the fairing is still large. The...

AI Technical Summary

Problems solved by technology

U.S. Patent No. 6,974,112 discloses a swing-arm type leading-edge slat retractable mechanism, which improves the space utilization of the slat retractable mechanism. If this retractable mechanism is used for trailing-edge flap retraction , will cause the spanwise displacement of the flaps in the process of retracting and retracting, which will lead to the reduction of aircraft performance due to the aerodynamic efficiency of the flaps not meeting the requirements

Images