Abstract
The purpose of this study is to establish a measurement technique of aerodynamic force for the four-winged flapping vehicle which has been developed. The detection of downward force on a flat plate of the downward stream generated by a hovering device is proposed in this study. This indirect-measured force was compared with the direct-measured force. Both measured values showed the good agreement in the thrust measurement of propeller. This method was applied to the four-winged flapping vehicle. The variation of indirect-measured force was smaller. It was confirm that the indirect-measured force rose with the increase of beating frequency.
