Abstract
In this study, we evaluated the passive pitching motion and lift force during the insect flapping flight using the dynamically scaled model. Since the wing and the surrounding fluid interact with each other, the dynamic similarity between the model and the insect flights was measured using not only Reynolds and Strouhal numbers but also the mass and Cauchy numbers. Our model includes the plate spring to simulate the low torsional stiffness of the insect wing. Our model wing simulated the pitching motion similar to the actual insect and generated the enough force to lift the insect.
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