抄録
Butterflies fly by skillfully controlling the deformation of the wings, which contain many veins and can undergo elastic deformation. A number of studies on the mechanism of butterfly flight have been carried out. Recently, there have also been many attempts at visualizing the flow field around insect wings. The present authors have investigated the vortex structure and dynamic behavior produced. However, the relationship between the dynamic behaviors of the vortex rings and the dynamic lift has not been understood sufficiently. In the present study, we performed the direct measurement of the dynamic lift generated by a flapping butterfly using six-axes sensor, and investigated the detailed relationship between the dynamic behaviors of the vortex rings and the dynamic lift.
