Low-drag tilt-variable swinging quad flapping-wing UAV

Abstract

The invention relates to the field of flapping-wing aircraft and flying robots, in particular to a swing-type quad-flapping-wing unmanned aerial vehicle with low resistance and variable inclination angles. It includes flapping wings, swing shafts, connectors, first reducer, stepping motor, transmission mechanism, second reducer, motor and fuselage frame. Four horizontal swing axes are installed and fixed symmetrically around the fuselage frame. The four connecting parts are respectively connected on the four swing shafts and rotate relatively, and the four flapping wings are respectively connected on the four connecting parts and can rotate relatively. The flapping wings include a flapping wing frame, and a rotatable There are also torsion springs in the flapping wing frame for the reset of the wings. The four sets of transmission mechanisms are respectively hinged on the four connecting parts, and the four motors set on the fuselage frame pass through four second reducers. After the deceleration, the four sets of transmission mechanisms are respectively driven to move to make the four connecting parts swing up and down, and the four stepping motors are decelerated by the four first reducers to drive the four flapping wings to rotate.

Description

technical field [0001] The invention relates to the field of flapping-wing aircraft and flying robots, in particular to a swing-type quad-flapping-wing unmanned aerial vehicle with low resistance and variable inclination angles. Background technique [0002] There are three flight types of aircraft flying: fixed wing, rotary wing and flapping wing. Among them, flapping wing flight is the flying mode adopted by flying creatures in nature. It mainly uses the up and down flapping of the wings to generate lift and thrust at the same time. , hovering and propulsion functions are based on one body, and at the same time have strong maneuverability and flexibility, and are more suitable for flying around obstacles. For small-sized and low-speed aircraft flying under low Reynolds numbers, the unsteady lift generated by the flapping wing is much greater than the constant lift of the fixed wing; from the perspective of thrust, the propulsion efficiency of the flapping wing is higher th...

AI Technical Summary

Problems solved by technology

The main reason for the overall low efficiency of flapping wing aircraft is that most of the current research simply imitates the shape and flapping motion of the wings of birds or insects, but it is difficult to realize the use of the wing's own posture and structure in the process of flapping wings of flying creatures. The change of air resistance reduces air resistance and generates unsteady aerodynamic force, and the resulting low aerodynamic efficiency seriously restricts the popularization and application of flapping-wing aircraft

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