Ships – Hull or hull adjunct employing fluid dynamic forces to... – Having laterally disposed skids or pontoons
Patent
1975-03-25
1977-02-01
Blix, Trygve M.
Ships
Hull or hull adjunct employing fluid dynamic forces to...
Having laterally disposed skids or pontoons
B63B 3544
Patent
active
040056678
ABSTRACT:
The watercraft has a hull with an upwardly curved (concave) bottom and side keels extending downwardly for the full longitudinal length of the watercraft spaced laterally from each other and on opposite sides of the watercraft. Forward and rearward hydrofoils are arranged on either side of the hull and project from the keels for swivelling about generally vertical axes angled downwardly and outwardly. The hydrofoils on one side are adjustable independently of the hydrofoils on the other side for adjusting the angle of attack of the hydrofoil lifting surfaces that are curved outwardly to be generally horizontal. Fixed hydrofoils between and respectively longitudinally aligned with the adjustable hydrofoils are attached to the hull. Propellers that swivel about axes extending downwardly and outwardly at approximately 15.degree. to the vertical are respectively mounted for swivelling movement along with attached rudders for steering. The hull is of aircraft frame construction, rests in the water and is lifted above the water by the hydrofoils during movement. A wave breaker is provided on the front of the hull.
REFERENCES:
patent: 2336987 (1943-12-01), Garber et al.
patent: 2906228 (1959-09-01), Wendel
patent: 3125981 (1964-03-01), Reynolds
patent: 3236202 (1966-02-01), Quady et al.
patent: 3403654 (1968-10-01), Wilson
patent: 3820490 (1974-06-01), Greer
Blix Trygve M.
Goldstein Stuart M.
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