Air foil with reversible camber

Details Air foil with reversible camber Air foil with reversible camber

1980-09-29

1982-07-27

Barefoot, Galen L.

Ships

Sail or control means therefor

Specific sail structure or arrangement

114127, 244219, 244123, 416119, 416132B, 416DIG5, 290 55, B63H 904, B64C 348, F03D 900

Patent

active

043411762

ABSTRACT:
A reversible airfoil generally wing-like in shape comprising at least two spaced apart rigid spars having at least two slots therethrough, bars projecting through the slots in each rigid spar, each end of each bar attaching to a flexible slat, and a common flexible movable skin adjacent the flexible slats thereby covering same to form a reversible airfoil. A series of the rigid spars and attending parts when covered by a common flexible skin and adapted to fit on a beam provides a unique sail for a sailboat. Additionally, a series of the rigid spars and attending components when covered by a common flexible skin and vertically mounted on a rotatable frame provides a reversible lift airfoil for a wind-powered generator.

REFERENCES:
patent: 1430406 (1922-09-01), Schulthes et al.
patent: 1790309 (1931-01-01), Kientz
patent: 2077685 (1937-04-01), Gerhardt
patent: 3381647 (1968-05-01), Keder
patent: 3753415 (1973-08-01), Burtis
patent: 4064821 (1977-12-01), Roberts et al.
patent: 4247251 (1981-01-01), Wuenscher
patent: 4280433 (1981-07-01), Haddock

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