Ships – Hull or hull adjunct employing fluid dynamic forces to... – Having hydrofoil
Patent
1979-09-27
1982-11-02
Blix, Trygve M.
Ships
Hull or hull adjunct employing fluid dynamic forces to...
Having hydrofoil
114283, 114281, 244 46, B63B 128
Patent
active
043567860
ABSTRACT:
An improved utility class hydrofoil boat having an integrated hydrofoil suspension and steering system wherein pairs of foils may be inclined at various angles, to the lateral axis of the boat, converting from surface piercing to submerged type foils when operated in concert and, in combination with the production of a yawing force about the vertical axis, may be used to produce coordinated turns by introducing a differential in the angle of inclination between starboard and port foils or by introducing a differential in the sweepback angle between starboard and port foils. In the preferred embodiment, a symmetrical, submerged tail foil having a positive dihedral is rotated to produce a yawing moment in proportion to the bank produced by manipulation of the pairs of foils, resulting in coordinated, banked turns with a single control movement. The foils incorporate a swivelable, shearable connection allowing them to streamline and convert to skis if the lower portion of the foils should strike a submerged object. This boat also combines modular construction, ducted fan propulsion, synchronous belt drive, sealed components, convertability to a self-trailering configuration, use of lightweight, non-corrosive materials, and simple controls to provide simple, safe, stable, energy-efficient, low-cost, quiet, high speed water transportation, capable of operation in varied water surface conditions.
REFERENCES:
patent: 1195495 (1965-07-01), Erlandsen
patent: 2491744 (1949-12-01), Link
patent: 3139059 (1964-06-01), Hanford
patent: 3165084 (1965-01-01), Gongwer
patent: 3213818 (1965-10-01), Barkley
patent: 3227123 (1966-01-01), Voigt
patent: 3324815 (1967-06-01), Morales
patent: 3342155 (1967-09-01), Hook
patent: 3710747 (1973-01-01), Guidi
patent: 4048939 (1977-09-01), Jones
Blix Trygve M.
Keen D. W.
Monahan William Jay
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