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Fig. 14. The power coefficients for translation (CP,t) and rotation (CP,r) versus time during one cycle for three different values of the non-dimensional duration of wing rotation {Delta}{tau}r. Symmetrical rotation; midstroke angle of attack {alpha}m was adjusted to make the mean lift equal to insect weight. {tau}c, non-dimensional period of one flapping cycle; {tau}, non-dimensional time.





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