A passive valve-type double-layer flapping wing hovering device

Abstract

The invention discloses a passive air valve type double-layer fluttering hovercraft, and relates to the technical field of fluttering hovering flight in an air environment. The passive air valve typedouble-layer fluttering hovercraft comprises a hovercraft rack, a double-layer passive air valve type airfoil structure, a symmetric vibration mechanism and a driving mechanism. The driving system drives the vertical double-layer airfoil structure to achieve vertical periodic vibration through the symmetric vibration mechanism. In the vibration process, a strip-shaped film air valve on the airfoilstructure can be passively opened and closed under the action of inertia force and air resistance, and adaptively coordinates with the periodic vibration of an airfoil, the wind resistance area of the airfoil is changed through the passive opening and closing angle of the air valve, a wind resistance difference is generated to improve take-off force, a new hovering mode is achieved, and the performance of vertical take-off and landing, stable hovering and the like is achieved. The fluttering hovercraft has the characteristics of being ingenious in airfoil design, simple in vibration mode, high in flying efficiency, high in overall stability, low in manufacturing cost and high in practicality.

Description

technical field [0001] The invention relates to the technical field of wing flapping and hovering flight in an air environment, in particular to a passive valve type double-layer flapping wing hovering device. Background technique [0002] Micro air vehicles capable of stable hovering can be mainly divided into two types according to their flight modes: rotorcraft and flapping wing aircraft, both of which have been proved to have good aerodynamic efficiency. Currently the most mature rotorcraft with vertical take-off and landing and hovering functions, it is more suitable for use in narrow spaces such as indoors or in more complex terrain environments. Horizontally distributed and six-rotor distributed, among which four-rotor horizontally distributed and six-rotor distributed are the most widely used. Typical ones include the DraganflyerX4 four-rotor aircraft developed by Draganfly in Canada and a new Hexrotor six-rotor developed by the University of Manchester in the United...

AI Technical Summary

Problems solved by technology

The aerodynamic performance of rotorcraft deteriorates significantly at low Reynolds numbers, and the flight efficiency is low. At the same time, the rotor needs to offset the torsion generated by the rotation, which leads to its own complex structure; the flapping wing aircraft is not only complicated in motion mechanism, but also difficult to realize the mechanism, and its practical application is limited by scale Larger; the uncontrollability of the flapping rotorcraft's rotation can easily affect its own hovering stability

Images