Effect of flapping kinematics on the mean lift of an insect-like flapping wing
نویسندگان
چکیده
منابع مشابه
The effect of aspect ratio on the leading-edge vortex over an insect-like flapping wing.
Insect wing shapes are diverse and a renowned source of inspiration for the new generation of autonomous flapping vehicles, yet the aerodynamic consequences of varying geometry is not well understood. One of the most defining and aerodynamically significant measures of wing shape is the aspect ratio, defined as the ratio of wing length (R) to mean wing chord (c). We investigated the impact of a...
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Optimization of flapping wing trajectory was explored using an experimental apparatus. A scaled-up hawkmoth (Manduca sexta) wing was fabricated and mounted to a three-degree of freedom flapping mechanism. The vertical force generated during flapping was measured using a load cell and the wing path was optimized to maximize the average vertical force. The mechanism design, control, and instrumen...
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This paper presents an experimental investigation of the evolution of the leading-edge vortex and spanwise flow generated by an insect-like flappingwing at a Reynolds number relevant to flapping-wing micro air vehicles (FMAVs) (Re =∼ 15000). Experiments were accomplished with a firstof-its-kind flapping-wing apparatus. Dense pseudo-volumetric particle image velocimetry (PIV) measurements from 1...
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In the analysis of flexible flapping wings of insects, the aerodynamic outcome depends on the combined structural dynamics and unsteady fluid physics. Because the wing shape and hence the resulting effective angle of attack are a priori unknown, predicting aerodynamic performance is challenging. Here, we show that a coupled aerodynamics/structural dynamics model can be established for hovering,...
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Recent developments in millimeter-scale fabrication processes have led to rapid progress towards creating airborne flapping wing robots based on Dipteran (two winged) insects. Previous work to regulate forces and torques generated by flapping wings has focused on controlling wing trajectory. An alternative approach uses underactuated mechanisms with tuned dynamics to passively regulate these fo...
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ژورنال
عنوان ژورنال: Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering
سال: 2011
ISSN: 0954-4100,2041-3025
DOI: 10.1177/0954410011401705