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12 April 2021 Mechanical design and fabrication of a kinetic sculpture with application to bioinspired drone design
Andrew Lessieur, Eric Sihite, Pravin Dangol, Akshath Singhal, Alireza Ramezani
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Proceedings Volume 11758, Unmanned Systems Technology XXIII; 1175806 (2021) https://doi.org/10.1117/12.2587898
Event: SPIE Defense + Commercial Sensing, 2021, Online Only
Abstract
Biologically-inspired robots are a very interesting and difficult branch of robotics dues to its very rich dynamical and morphological complexities. Among them, flying animals, such as bats, have been among the most difficult to take inspiration from as they exhibit complex wing articulation. We attempt to capture several of the key degrees-of- freedom that are present in the natural flapping gait of a bat. In this work, we present the mechanical design and analysis of our flapping wing robot, the Aerobat, where we capture the plunging and flexion-extension in the bat's flapping modes. This robot utilizes gears, cranks, and four-bar linkage mechanisms to actuate the arm-wing structure composed of rigid and exible components monolithically fabricated using PolyJet 3D printing. The resulting robot exhibits wing expansion and retraction during the downstroke and upstroke respectively which minimizes the negative lift and results in a more efficient flapping gait.
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Andrew Lessieur, Eric Sihite, Pravin Dangol, Akshath Singhal, and Alireza Ramezani "Mechanical design and fabrication of a kinetic sculpture with application to bioinspired drone design", Proc. SPIE 11758, Unmanned Systems Technology XXIII, 1175806 (12 April 2021); https://doi.org/10.1117/12.2587898
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KEYWORDS
Mechanical engineering
Gait analysis
3D printing
Biomimetics
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