Torsion-adaptive wing structure for large flapping wings

Abstract

The invention provides a torsional self-adaptive wing structure suitable for a large flapping wing, comprising a bent wing part and a twisted wing part, a connecting piece is arranged between the bent wing part and the twisted wing part, and one end of the connecting piece is fixed on The wing part is twisted, and the other end is hinged to the bent wing part. When the wing flutters, the bent wing part will drive the movement of the twisted wing part when it flutters up and down, and at the same time, the twisted wing part will continue to twist under the action of air resistance and energy storage mechanism, and finally realize the movement of the aircraft during the flapping process. Large flapping and twisting movements of the wings. The structure of the traditional wing is simplified, and the energy generated by the air resistance during the flapping process of the wing can be stored and used in the next flapping stage, which is better adapted to different flight states and improves the flight efficiency of the flapping wing. Simultaneously, it can also effectively reduce the damage of the wings during flapping flight, thereby improving the service life of the wings.

Description

technical field [0001] The invention relates to the field of aircraft, in particular to a twist adaptive wing structure suitable for large flapping wings. Background technique [0002] The way birds fly has been the result of natural selection since ancient times. With the development of microelectronics technology, based on the principle of bionics, humans have been able to design a variety of flapping-wing aircraft that are close to the size of real birds. During the flight of birds, wings play a pivotal role. For flapping-wing aircraft , the performance of the wing determines the performance of the flapping wing aircraft to a certain extent, and the design of the wing will belong to a very important part of the aircraft design. [0003] Through the research on the deformation and movement of the wings of large birds during flight, it can be found that the wings of large birds have certain bending and twisting movements when they fly. The wings are twisted downward when t...

AI Technical Summary

Problems solved by technology

[0004] In order to realize the twisting movement of the wings during the flight of the flapping-wing aircraft, some flapping-wing aircraft currently use a mechanically driven twisting device, but this twisting device limits the movement of the wings, and the twisting state cannot be determined according to the flight state. Adjustment; there are also some flapping-wing aircraft that design controllable torsion drive devices inside the wings, and drive the wings to perform twisting motions through steering gear. Although this method can achieve corresponding functions, due to The aerodynamic force on the wing will form a large moment at the root of the wing, and the installation of servos inside the wing will increase the weight of the wing, thereby increasing the moment at the root of the wing during flapping. It needs to be twisted up and down continuously. During the twisting process, most of the resistance generated by the wings is consumed by the steering gear, and the service life of the steering gear will be greatly shortened. The active twisting mechanism has high requirements for driving the steering gear.

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