Marine propulsion – Screw propeller – Having means to control flow around propeller
Patent
1989-08-04
1991-02-26
Basinger, Sherman
Marine propulsion
Screw propeller
Having means to control flow around propeller
114274, 440900, B63H 118
Patent
active
049958402
ABSTRACT:
Each stabilizing fin is provided with a thickened trailing edge in order to act as a flap for inducing drag during start-up. The induced drag serves to minimize the time within which the fin moves into a planing position. The recess on the bottom surface of the fin enhances the lifting force on the fin during stabilization without imposing undue drag forces during high speed travel of a boat.
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Barron, Jim, Whale Tail, Sting Ray and Doel-Fin Claim Numerous Benefits -Here's How They Really Work, Trailer Boats, Jan. 1989 pp. 61-63, 166.
Rizzuto Dennis
Satin Harold
Seale Robert
Basinger Sherman
Brahan Thomas J.
Hydrofoil International, Inc.
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