A bionic small wing feather structure that can change the flow around the leading edge of the flapping wing aircraft

Abstract

The invention discloses a bionic small wing feather structure capable of changing the flow around the leading edge surface of a flapping-wing aircraft, and relates to the structural field of aircraft wings. A method that completely imitates the structural characteristics, movement mode and aerodynamic performance of the bird's small wing feathers is proposed, so as to effectively improve the aerodynamics of the flapping wing aircraft, change the flow around the leading edge airfoil to achieve stall delay, and make the aircraft The bionic small wing feather structure that can change the flow around the leading edge of the flapping wing aircraft with more stable take-off and landing. The bionic small winglet structure includes a pair of small winglets and a small winglet control mechanism; the two small winglets are arranged symmetrically along the fuselage of the aircraft and rotate synchronously under the drive of the small winglet control mechanism. It has good aerodynamic performance and flow characteristics in the flight of the flapping wing aircraft, and can realize its delayed stall function. Its special structural design makes the increased weight of the mechanism and the increased moment of inertia of the wings negligible.

Description

technical field [0001] The invention relates to the structural field of aircraft wings, in particular to a bionic small winglet structure capable of changing the flow around the leading edge of a flapping-wing aircraft. Background technique [0002] The flapping-wing aircraft is a new type of aircraft that imitates the flight of birds or insects. Compared with the flight methods of fixed wings and rotors, the flapping-wing flight is more flexible. According to the different wings, it can be divided into a single section that imitates small birds. wing and a two-section wing modeled after a large bird. In nature, the small wing feather structure on the bird's wing opens to delay the stall when it lands, but the current research field of flapping wing aircraft cannot guarantee its lift force well when it takes off and lands. On this basis, it is difficult to solve the problem of adding a bionic small wing feather structure to the flapping wing aircraft based on the small wing...

AI Technical Summary

Problems solved by technology

Another difficulty in designing a bionic wing on a flapping-wing aircraft is that the load capacity of the flapping-wing aircraft is limited. Adding too many driving devices to realize the function will also increase the weight of the whole machine, and adding mass to the wing structure will increase the rotation Inertia affects lift

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