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Fig. 19. Drag coefficients for one-winged fling as functions of time for a range of
Reynolds numbers (Re). The letters i–viii along the x
axis correspond to the times the streamlined plots labelled i–viii in
Fig. 15B were drawn. The angle
of attack during pure translation was set to 45°. In general, drag
coefficients are smaller for higher Re. In comparison to the
two-winged case, drag coefficients are significantly lower during `clap' (the
end of the upstroke) for all Re. During wing rotation at the
beginning of the downstroke, drag coefficients are substantially lower than
the two-winged case for all Re. The difference between the one and
two-winged case is greatest at lower Re.
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