METHOD FOR ADJUSTMENT OF OPERATION CONDITION OF FIN-TYPE VIBRATION PROPULSIVE DEVICE

摘要

The present invention pertains to the field of water transport actuators, and it can be used for motion excitation of ships, underwater robotic fishes, motorboats, etc. The objective of the invention is to increase the efficiency of operation of fin-type vibration propulsive device. The proposed method lies in equipping of vibration propulsive device with two identical fins and making of each fin in the form of thin-walled semi-cylinder chute. Fins are jointed to propulsive device in such manner that convex part of the chute is directed outside from the fore-and-aft axis of floating vehicle. Then floating vehicle is immersed into a liquid. The adjustment of operation condition of the propulsive device is carried out by gradual increasing of frequency of fin's angular oscillations and by further observing of equilibrium form of each fin under adjusted frequency values. Operation frequency of fins' oscillations is taken for the motion regime, which corresponds to the loss of stability of rectilinear equilibrium form of both fins during their motion from fore-and-aft axis of floating vehicle up to end positions.