Variable-area rotatable bionic winglet

Abstract

The invention relates to a variable-area rotatable bionic winglet, and belongs to the technical field of aircrafts. The variable-area rotatable bionic winglet includes a transmission mechanism, a deformation mechanism and a rectifying leading edge; a motor of the transmission mechanism is fixed to a wing tip of a wing through a fixing seat, and a rotor is connected with the deformation mechanism through a rotating shaft so that the rotation angle of the winglet relative to the wing can be adjusted; the deformation mechanism is characterized in that a short rod on a feather, a first long rod, asecond long rod and a connecting line of hinge holes in the fixing plate form a parallelogram structure; a steering gear drives a connecting rod to control the rotation angle of the parallelogram structure, and the area change of a variable mechanism is further realized; and the variable-area manner of a parallelogram is adopted, simpleness and reliability are achieved, and a large area change range is achieved. In the design, the maximum area is at least twice the minimum area. The larger range means a rudder effect change range with the better effect, so that better adaptation to differentkinds of rolling control is achieved.

Description

technical field [0001] The invention belongs to the technical field of aircraft, in particular to a rotatable bionic winglet with variable area. Background technique [0002] The research on bionic aircraft has been a hot spot in the aviation industry since the birth of aircraft. At present, most of the bionic aircraft known to the public are flapping wing aircraft, such as the "pigeon drone" of Northwestern Polytechnical University, the University of Illinois at Urbana-Champaign and the California Institute of Technology. The "Bat UAV B2" produced by the research team of the company also has bionic technology used in fixed-wing UAVs. For example, the Lausanne Institute of Technology in Switzerland published an article entitled "Bioinspired morphing wings for Extended flight envelope and roll control of small drones" paper, which studies the variable-area wing, which is used to control the roll of the aircraft, but it occupies most of the wing area, which is not conducive to...

AI Technical Summary

Problems solved by technology

At present, there is another way to solve the problem of efficient use of the wing surface of solar-powered aircraft, which is to use the differential motion of multiple engines to perform horizontal and vertical operations. The continuous differential motion of this method will increase energy consumption, and the lateral control response of this method is relatively slow. long reaction time

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