posted on 2023-05-27, 23:43authored byYamaguchi, H, Bose, N
The use of oscillating fins by aquatic animals for propulsion has inspired the design of corresponding propulsors for ships. Rigid and partly flexible oscillating propulsor designs were analysed for a large ship based on two-dimensional linear and nonlinear theories. Open water efficiencies of the oscillating propulsors were 17-25% higher than those of an optimal srew propeller. Behind the ship, quasi-propulsive efficiency of the partly chordwise flexible foil was 72%, i.e. 5% higher than that of the screw propeller. The efficiency increase produced by the oscillating propulsor was attributed to the considerable increase in the propeller working area due to the wide span of the foil.
History
Publication title
Proceedings of The Fourth (1994) International Offshore ans Polar Engineering Conference
Volume
3
Pagination
539-544
ISBN
1-880653-13-3
Publisher
International Society of Offshore and Polar Engineers,
Publication status
Published
Place of publication
Golden,Colorado, USA
Rights statement
Copyright Copyright 1994 by International Society of Offshore and Polar Engineers, Golden,Colorado, USA. All Rights Reserved.