Fig. 7. Aerodynamic signature of wing flutter using anemometry. (A,B) Values replotted from the data of Combes and Daniel (2003) show the wing movements in terms of wing position and wing bending (excursion of trailing edge) as a function of time (A). These data were taken for a wing oscillated at frequencies typical of Manduca sexta. A Fourier analysis of the wing bending reveals frequency peaks at wing beat frequency and twice the wing beat frequency (B) similar to the frequency peaks measured in the trailing edge anemometric record (C).