Ships – Watercraft with means used in providing sailpower – Having specifically defined hull shape
Patent
1980-08-05
1983-01-25
Blix, Trygve M.
Ships
Watercraft with means used in providing sailpower
Having specifically defined hull shape
114 97, 114103, B63B 1502
Patent
active
043697240
ABSTRACT:
A low drag and high lift sail has a fabric skin suspended by an edge tension device able to control forward and trailing edge tension to tune and reverse the airfoil section. The fabric skin is double, with a windward and lee section of different curvatures giving the airfoil section thickness. The sail is supported by a mast and a curved boom located between the two fabric sections and thus is out of the impinging air stream. The ends of the boom are used for the sail support, usually with an additional external spar or spars on the windward side. The mast includes a foot which is either fixed or attached by a universal joint to a craft for motive power.
REFERENCES:
patent: 3598075 (1971-08-01), Kenney
Avila Stephen P.
Blix Trygve M.
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