Thrust fin for ships

Details Thrust fin for ships Thrust fin for ships

2005-12-08

2010-10-05

Swinehart, Edwin (Department: 3617)

Ships

Steering mechanism

Rudders

Reexamination Certificate

active

07806067

ABSTRACT:
Disclosed herein is a thrust fin for ships which recovers lost energy caused by rotational flow generated behind a propeller, and converts it into thrust. The thrust fin of the present invention has a simple shape, enhances propulsive efficiency of the ship, and can be applied to a real ship thanks to the simple installation thereof, to maximize thrust of the ship. The thrust fin is mounted to a front portion of the rudder of the ship such that left and right sides of the thrust fin, which are integrated with each other into a single body, are asymmetrical. A vertical position, at which the thrust fin is mounted to the rudder, is at an optimum position as determined in consideration of the shape of the rudder and hydrodynamic characteristics.

REFERENCES:
patent: 4653418 (1987-03-01), Mori et al.
patent: 5231947 (1993-08-01), Kasahara et al.
patent: 4304158 (1994-08-01), None
patent: 02293296 (1990-12-01), None
patent: 04-201693 (1992-07-01), None
patent: 05-026798 (1993-04-01), None
patent: 07-237594 (1995-09-01), None
patent: 11-139395 (1999-05-01), None

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