Variable-inclination linear reciprocating motion flapping wing device with airflow self-adaption type rotatable blades and flapping method

Abstract

The invention discloses an variable-inclination linear reciprocating motion flapping wing device with airflow self-adaption type rotatable blades and a flapping method. The variable-inclination linear reciprocating motion flapping wing device with the airflow self-adaption type rotatable blades comprises a flapping wing, a sliding way and a connection piece. The flapping wing is connected to the connection piece and can relatively rotate. The connection piece is connected to the sliding way in a sliding manner. The sliding way is arranged on an aircraft. The flapping wing comprises a flapping wing frame and rotatable blades installed in the flapping wing. Torsional springs are further arranged in the flapping wing frame and used for resetting of the blades. Compared with the prior art, the variable-inclination linear reciprocating motion flapping wing device with the airflow self-adaption type rotatable blades has the features that resistance force of a reset travel is small, the thrust of a work travel is large and stable, aerodynamic efficiency is high, lift force and thrust can be adjusted at the same time and the device is simple in structure and convenient to manufacture. The variable-inclination linear reciprocating motion flapping wing with the airflow self-adaption type rotatable blades can be widely applied to various small-sized aircrafts and drones flying at low a Reynolds number.

Description

technical field [0001] The invention relates to the field of flapping-wing aircraft and flying robots, in particular to a reciprocating direct-moving flapping-wing device and a flapping-wing method for self-adaptive airflow rotatable blades for unmanned aerial vehicles. 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 ef...

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

Images