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The generation of circulation and lift in a rigid two-dimensional fling

Published online by Cambridge University Press:  21 April 2006

G. R. Spedding  and
T. Maxworthy
G. R. Spedding
Affiliation:
Department of Aerospace Engineering, University of Southern California, Los Angeles, California 90089–0192
T. Maxworthy
Affiliation:
Department of Aerospace Engineering, University of Southern California, Los Angeles, California 90089–0192
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Abstract

The instantaneous lift forces on a pair of rigid wings opening by rotation about a common trailing edge (the fling) are measured and related to the unsteady flow field as revealed by simultaneous flow visualization. The effect of altering the wing-opening time history and the initial opening angle of the wing pair on circulation and lift generation is investigated. Dimensionless circulations and lift coefficients are compared with experimental and theoretical results in the literature and the relevance of these results to insects and engineers is discussed.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 165 , April 1986 , pp. 247 - 272
Copyright
© 1986 Cambridge University Press

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