Boom-footed sail efficiency enhancement system

Details Boom-footed sail efficiency enhancement system Boom-footed sail efficiency enhancement system

1987-05-12

1988-11-01

Barefoot, Galen

Ships

Sail or control means therefor

Specific sail structure or arrangement

114 391, 114364, B63H 904

Patent

active

047811374

ABSTRACT:
To prevent crossflow of wind and increase aerodynamic efficiency of boom-footed sail, a stationary sealing vertical baffle structure is mounted along the centerline of a sailboat under the boom. The top portion of the baffle is made of a compliant sealing material, e.g., closed cell polyurethane foam, which forms a tight seal with the boom when the boom is positioned substantially along the centerline, as is common when sailing to weather. The boom and baffle can have curved side surfaces which form with the sail a substantially continuous surface which extends the effective sail area down to the deck.

REFERENCES:
patent: 3598075 (1971-08-01), Kenney
patent: 4365570 (1982-12-01), Jamieson
patent: 4437426 (1984-03-01), Latham
patent: 4492175 (1985-01-01), Johnson
patent: 4702186 (1987-10-01), Tiede

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