Abstract
In this paper, Manta-like robot is proposed to perform the fin with flapping and feathering motion. The part of the edge of the fin having the elastic or rigid is controlled by three servo motors .The propulsion performance of the fin is evaluated by swimming number for frequency by the fin vibration. The swimming number has the maximum value for the frequency of the flapping motion. The result shows that the controlled feathering angle is important to swim for the Manta-like robot.
