Abstract
Micro flapping-wing air vehicles (FWAV) are highly appreciated by scientists and scholars around the world due to their small size, high flexibility, and better manoeuvrability. There are huge potential applications of flapping-wing robots in rescue, survey, and search, as they can enter more dangerous and narrow spaces to accomplish tasks that were previously impossible for people. In this paper, we first analyze the flapping motion of birds by reviewing a large amount of information and literature and identifying the sources of lift and thrust during flight. Then, the double crank and double rocker mechanisms are optimized as the flapping mechanism. Proper flapping-wing size is further determined by analyzing the relative position between the driving mechanism and the flapping mechanism. Moreover, a pitch mechanism consisting of ball hinges is designed to realize the wing’s pitching motion for additional thrust. The fuselage and landing gear of the flapping-wing robot are designed for low air resistance and lightweight, and the tail mechanism are designed to have both roll and pitch freedoms, offering excellent manoeuvrability during flight. Simulation results show positive lift force is generated based on the novel pitching design for the small wing. The research in this paper is an important resource for novice researchers to design and study the advanced and complex problems of flapping-wing air vehicles.
Highlights
A micro air vehicle (MAV) is a mechanical device with the ability to fly and can be divided into three types according to the way it generates lift: a fixed-wing flying robot like a jet-propelled aircraft, a rotor-wing vehicle like a helicopter, and a flappingwing robot that mimics birds or insects [1, 2]
Motion symmetry, and flapping efficiency, this paper proposes an optimized double crank and double rocker mechanism as the flapping mechanism
Proper flapping-wing size is determined by analyzing the relative position between the driving mechanism and the flapping mechanism
Summary
A micro air vehicle (MAV) is a mechanical device with the ability to fly and can be divided into three types according to the way it generates lift: a fixed-wing flying robot like a jet-propelled aircraft, a rotor-wing vehicle like a helicopter, and a flappingwing robot that mimics birds or insects [1, 2]. E drive can be highly efficient in reciprocating motion for the wings to flap up and down to generate sufficient lift [15]. Erefore, a group of biomimetic wing-flapping robots with efficient reciprocating drives are born, represented by Entomopter. It adopts a front-to-back cross-flapping layout, giving it hovering capability, balance, and controllability. 2. Bionic Flight Mechanisms and Design Requirements is paper focuses on the design of a micro flapping-wing robot based on the study of the flapping mechanism of birds and the application of bionic design principles
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