Sail with retractable air directing element

Details Sail with retractable air directing element Sail with retractable air directing element

1983-06-03

1986-01-14

Blix, Trygve M.

Ships

Sail or control means therefor

Specific sail structure or arrangement

114102, 244215, 244216, B63H 906

Patent

active

045639701

ABSTRACT:
A sailset comprising a leading aerofoil and a trailing aerofoil that pivots about an axis passing through the leading aerofoil. A third comparatively small aerofoil is retractable within the leading aerofoil and extendable downwind of the trailing edge of the leading aerofoil to provide a surface overlapping the leading edge of the trailing aerofoil.
Guides for the third aerofoil are preferably provided for both its leading and trailing edges, the guides comprising roller and roller tracks and/or sliding pivots.

REFERENCES:
patent: 1661114 (1923-02-01), Flettner
patent: 2257215 (1941-09-01), Zap
patent: 2836380 (1958-05-01), Pearson
patent: 3528632 (1970-09-01), Miles
patent: 3853289 (1974-12-01), Nevermann
patent: 3934533 (1976-01-01), Wainwright
Sail Magazine, Dec. 1978, "U.S. Wins War of Wings", pp. 45-50.

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