Swing type four-flapping-wing unmanned aerial vehicle low in resistance and variable in dip angle

Abstract

The invention relates to the field of flapping wing type air vehicles and flying robots, in particular to a swing type four-flapping-wing unmanned aerial vehicle low in resistance and variable in dipangle. The swing type four-flapping-wing unmanned aerial vehicle low in resistance and variable in dip angle comprises flapping wings, swing shafts, connecting parts, first speed reducers, a steppingmotor, transmission mechanisms, second speed reducers, electric motors and a vehicle body frame. The four swing shafts in the horizontal direction are symmetrically and fixedly mounted on the periphery of the vehicle body frame, the four connecting parts are connected to the four swing shafts and relatively rotate, the four flapping wings are connected to the four connecting parts and can relatively rotate, each flapping wing comprises a flapping wing frame and a rotation wing piece mounted in the flapping wing frame, a torsion spring is arranged in each flapping wing frame and used for resetting of the wing piece, the four transmission mechanisms are hinged to the four connecting parts, the four electric motors on the vehicle body frame are subjected to speed reduction through the four second speed reducers and drive the four transmission mechanisms to move to enable the four connecting parts to swing up and down, and the four stepping motors are subjected to speed reduction through the four first speed reducers and 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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