Dragonfly-imitating ornithopter

Abstract

The invention discloses a dragonfly-imitating ornithopter, and belongs to the technical field of ornithopters. The dragonfly-imitating ornithopter comprises a flight control system, a flapping wing device and two pairs of flexible flapping wings, wherein the flapping wing device comprises a front double-wing driving mechanism, a rear double-wing driving mechanism and a driving mechanism connecting frame; the front double-wing driving mechanism and the rear double-wing driving mechanism have the same structure and comprise double-wing active energy piezoelectric actuators and a pair of side wing driving mechanisms with the same structure; the pair of side wing driving mechanisms with the same structure comprises a side wing auxiliary kinetic energy piezoelectric actuator and a side wing flapping mechanism; the side wing flapping mechanism comprises a side wing flapping structure and a side wing rocker arm; the side wing flapping structure comprises a main kinetic energy driving connecting arm and an auxiliary kinetic energy driving connecting arm; the flexible flapping wings are connected with the side wing rocker arms through the flapping wing connecting structures; and the front double-wing driving mechanism and the rear double-wing driving mechanism are respectively arranged in front of and behind the driving mechanism connecting frame. The dragonfly-imitating ornithopter has the characteristics of light weight, compact structure, independent control of four-wing amplitude and vibration frequency and the like.

Description

technical field [0001] The invention relates to the technical field of flapping-wing aircraft. Background technique [0002] The vibration frequency of the dragonfly's wings is 30-40Hz, which can realize various flight modes such as stable hovering, fast turning, and continuous forward flight. This has a lot to do with the independent control of the four wings of the dragonfly itself. The structure of the dragonfly is the best template for the design and development of micro-flapping-wing aircraft. However, most of the current dragonfly-like flapping-wing aircraft are difficult to achieve independent control of the wings, or have problems such as small flapping range. [0003] Large-scale flapping-wing aircraft are driven by motors, but the driving force and efficiency of the motors will drop significantly on small scales. The shafts and gears in the traditional mechanical structure cannot guarantee high transmission efficiency, and the processing is extremely difficult. ...

AI Technical Summary

Problems solved by technology

Although this direct attachment of the piezoelectric material to the wing enables independent control of individual wings, the limited displacement of the piezoelectric material limits the amplitude of the flapping wings.

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