Wing trailing edge continuous deformation structure and deformation method

Abstract

The invention provides a wing trailing edge continuous deformation structure which comprises wings, a skin, a trailing edge framework and a control circuit, beams, ribs and stringers form the trailing edge framework, the skin wraps the outer layer of the trailing edge framework, the multiple ribs are arranged on the trailing edge framework in parallel, each rib is divided into multiple rib sections, the trailing edge framework is fixed to the wing trailing edge, the control circuit is connected with a driving assembly arranged on each rib section, and driving ropes and connecting points in the driving assemblies are made of NiTi shape memory alloy; the shape memory effect of the shape memory alloy material is utilized, multi-point driving is conducted on the wing trailing edge structure, the wing trailing edge is promoted to deform continuously and smoothly, and seamless transition of the wing trailing edge is achieved; the aerodynamic efficiency of the wings and the maneuverability of the aircraft are effectively improved, and noise and oil consumption are reduced.

Description

technical field [0001] The invention relates to the technical field of wing structure, in particular to a continuous deformation structure and deformation method of the trailing edge of the wing. Background technique [0002] The wing is the most important part of the lift source of the aircraft, and its shape directly affects the flight performance of the aircraft. Since the first powered and steerable airplanes, engineers have developed flying machines inspired by the flight of birds. The study found that birds continuously adjust the shape and size of their wings to adapt to different flight tasks during flight, thereby changing the aerodynamic performance through wing deformation to obtain better flight performance. [0003] Compared with the existing aircraft, the engineer designed the wing as close as possible to the bird's wing, so as to obtain the same superior aerodynamic performance as the bird's wing, which gave birth to a series of aircraft flaps, ailerons, slat...

AI Technical Summary

Problems solved by technology

[0003] Compared with the existing aircraft, the engineer designed the wing as close as possible to the bird's wing, so as to obtain the same superior aerodynamic performance as the bird's wing, which gave birth to a series of aircraft flaps, ailerons, slats, spoilers, etc. Movable control surfaces and accessories, these movable parts make the shape and size of the aircraft wing change, and correspondingly change the impact of aerodynamics during flight, but the aforementioned design of the wing cannot be continuously deformed, At present, the deformation of the wing mainly uses intelligent deformation materials to replace the entire trailing edge of the wing or the device using the curvature deformation of the wing. Elastic flexible skin and composite material bistable plate and shell), currently used bistable plate and shell are limited by materials and preparation methods, there are only two forms of switching, continuous deformation cannot be achieved, and the air that can withstand The load is small, and the latter has many devices for wing camber deformation, but it is difficult to achieve perfection in terms of deformation range, mechanism weight, and mechanism efficiency. It is mainly driven by a motor to drive connecting rods, sliders and other devices to translate, Rotational movement, but due to the narrow space inside the wing, the performance of the driving components of the deformation device is often limited, and the mechanism can only be arranged flat according to the shape of the wing, the transmission performance is generally poor, and the position of each component usually changes during the movement of the mechanism , the overall center of gravity of the wing changes greatly, which affects the structural characteristics of the wing

[0004] At the same time, the existing fixed-wing aircraft usually use the rudder surface for flight control. The deflection of the rudder surface will easily cause discontinuous air flow on the surface of the wing. When the deflection angle is large, the air flow may be separated, thereby reducing the aerodynamic performance of the wing and increasing the noise of the aircraft. and fuel consumption

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