Morphing aircraft

Abstract

The invention belongs to the technical field of aircraft design, and particularly relates to a morphing aircraft. The morphing aircraft comprises an aircraft body, an inner morphing wing section, an outer morphing wing section, a high-speed wing section and a morphing mechanism. The inner variable wing section is rotationally connected with the aircraft body; the wing sections are connected in a rotating mode. The inner variable wing section and the outer variable wing section form a variable wing section, and variant operation is achieved through a variant mechanism. Control surfaces are arranged on the inner variable wing section, the outer variable wing section and the high-speed wing section; the morphing aircraft provided by the invention uses a large aspect ratio at a low speed, realizes high-efficiency flight and shortens a skating distance; the aircraft is changed into an aircraft with a small aspect ratio at a high speed, resistance is reduced, the maneuverability is improved,and the high-speed and high-maneuverability target is comprehensively achieved; and the design configuration provided by the invention greatly improves the flight speed and maneuverability of the aircraft.

Description

technical field [0001] The invention belongs to the technical field of aircraft design, and in particular relates to a variant aircraft. Background technique [0002] The ratio of the wingspan to the average chord length is called the aspect ratio, which can also be expressed as the ratio of the square of the wingspan to the wing area. Aircraft with a large aspect ratio has a relatively large lift coefficient, which can reduce the ratio of induced drag to drag, improve wing efficiency, and increase flight range; an aircraft with a small aspect ratio has a small lift coefficient and small resistance, which is manifested in fast flight , the maneuverability is more flexible. When the aspect ratio increases, the induced drag of the wing will decrease, which can improve the maneuverability of the aircraft and increase the subsonic range, but the wave resistance will increase, which will affect the supersonic flight performance of the flight. [0003] The wing area is the same, ...

AI Technical Summary

Problems solved by technology

However, such as existing deformation wing technologies such as CN201711299673.1 a telescopic deformation wing and CN201711299674.6 a folding wing, all adopt flexible skin, have many fulcrums, and the wingspan changes little, which cannot meet the needs of low speed and large wingspan. , and when the load is large, the deformation of the flexible skin becomes large, which cannot guarantee a stable aerodynamic shape, and affects the overall flight performance

[0005] In addition, the folding adopted by an existing variable-wing-span aircraft is to fold the inner wing upright and fold the outer wing to the horizontal direction at the same time, so that the center of gravity is below the wing, so when rolling, the center of gravity appears relative to the center of rotation. A reverse restoring moment, and the adjustment force ΔL of the aircraft's gravity G relative to the rudder surface is large, so it has a great influence on the roll attitude adjustment effect

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