On unidirectional flight of a free flapping wing | Zendy

Nicolas Vandenberghe | Zendy; Stephen Childress | Zendy; Jun Zhang | Zendy

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On unidirectional flight of a free flapping wing

Author(s) -

Nicolas Vandenberghe,

Stephen Childress,

Jun Zhang

Publication year - 2006

Publication title -

physics of fluids

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.188

H-Index - 180

eISSN - 1089-7666

pISSN - 1070-6631

DOI - 10.1063/1.2148989

Subject(s) - wing , flapping , physics , amplitude , mechanics , wing loading , asymmetry , instability , insect flight , aerospace engineering , aerodynamics , angle of attack , optics , engineering , quantum mechanics , thermodynamics

International audienceWe study the dynamics of a rigid, symmetric wing that is flapped vertically in a fluid. The motion of the wing in the horizontal direction is not constrained. Above a critical flapping frequency, forward flight arises as the wing accelerates to a terminal state of constant speed. We describe a number of measurements which supplement our previous work. These include (a) a study of the initial transition to forward flight near the onset of the instability, (b) the separate effects of flapping amplitude and frequency, (c) the effect of wing thickness, (d) the effect of asymmetry of the wing planform, and (e) the response of the wing to an added resistance. Our results emphasize the robustness of the mechanisms determining the forward flight speed as observed in our previous study

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