Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : September 08, 2024 - September 11, 2024
The pectoral fin plays the role of turning, surfacing, and descending in a fish-type underwater research vehicle. This study considered the possibility of applying a wing with LEP that imitates the pectoral fin of a humpback whale, which has good maneuverability, to its pectoral fin. We clarified the effect of wing with LEP on wing performance during flapping motion through lift measurements. In the case of flapping motion, time variation of lift force was found to be greatly affected by the lift caused by the pitching motion regardless of leading edge shape. It was also found that the time-averaged lift force is larger than that in the case of heaving or pitching motion. In the case of baseline with flapping motion, the amplitude of the lift fluctuation was found to be the largest when the phase difference PD was PD=0° and the smallest when PD=180°. In the case of flapping wing with LEP, the lift fluctuation was found to be smaller compared with the baseline case. These results indicate that the wing with LEP is likely to be suitable for a fish-type underwater survey machine.
