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Fig. 5. Non-dimensional angular velocity of pitching rotation and azimuthal rotation (A), lift coefficient CL (B) and drag coefficient CD (C) versus time during one cycle for three midstroke angles of attack {alpha}m (symmetrical rotation, non-dimensional duration of wing rotation {Delta}{tau}r=0.36{tau}c). {tau}c, non-dimensional period of one flapping cycle; {tau}, non-dimensional time.





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