Initial development of a flapping propelled unmanned underwater vehicle (UUV)

This paper studied the swimming modes of aquatic animals, then the development and experiment of a flapping propelled, radio-controlled UUV are described. The vehicle consists of a pair of flexible flapping wings as propeller; a pare of elevators and a rudder at the end of the shell provide the hydro-kinetic force for attitude control. The UUV prototype has a 70 cm wingspan, 50 cm length and a tonnage of 3.8 kg, with three-channel radio control system and a 1300 mAh M-Poly rechargeable battery for no less than 20 minutes of swimming. Speed achieved 0.7 m/s in the swimming test and the speed-length ratio is 1.4. The flexible biotic UUV should be further developed to adapt practical uses.