Base vented subcavitating hydrofoil section

Details Base vented subcavitating hydrofoil section Base vented subcavitating hydrofoil section

1990-04-10

1991-09-10

Basinger, Sherman

Ships

Hull or hull adjunct employing fluid dynamic forces to...

Having hydrofoil

244 35R, 416243, B63B 124

Patent

active

050464442

ABSTRACT:
A "fish-shaped" hydrofoil section and in particular, a hydrofoil section having a body of cross-sectional area increasing in thickness from the leading edge to a point near the midchord of the hydrofoil section. The thickness of the body then decreasing some amount to a local minimum, and thereafter increasing along concave surfaces in a "fishtail" flare to a local maximum thickness at the trailing edge. A low pressure area develops behind the trailing edge of the "fishtail" flare and is ventilated with gas at a pressure greater than that of the developed low pressure area. The cross-sectional shape of the hydrofoil section can be symmetrical or cambered.

REFERENCES:
patent: 2815730 (1957-12-01), Horsdal
patent: 2936729 (1960-05-01), Kuttner
patent: 3016863 (1962-01-01), Johnson, Jr.
patent: 3117545 (1964-01-01), Warner
patent: 4592299 (1986-06-01), Christiansen

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