Method and mechanism for dynamic trim of a fast moving, planning

Details Method and mechanism for dynamic trim of a fast moving, planning Method and mechanism for dynamic trim of a fast moving, planning

1999-08-17

2000-11-21

Swinehart, Ed

Ships

Hull or hull adjunct employing fluid dynamic forces to...

Having hydrofoil

114275, B63B 128

Patent

active

061487562

ABSTRACT:
A mechanism and method for dynamic trim of the floating position of a fast moving, planing or semi-planing ship hull is suggested, wherein a fully submerged hydro foil (1) is pivotally arranged in a stem portion of the ship and continuously adjustable relative to the angle of attack of the hydro foil for generating a wave, the wave having a length, a width and a depth related to the length, the tonnage and the cruising speed of the ship, wherein the hydro foil is designed relative to the wave so that the wave width is controlled by a span width (a), the wave length is controlled by a chord length (b), and the wave depth is controlled by a load (p) of the hydro foil.

REFERENCES:
patent: 2257405 (1941-09-01), Von Burtenach
patent: 2749869 (1956-06-01), Bush
patent: 2807228 (1957-09-01), Vandre
patent: 2890672 (1959-06-01), Boericke, Jr.
patent: 3693570 (1972-09-01), Erlykin et al.
patent: 3763812 (1973-10-01), Rowe
patent: 4041885 (1977-08-01), Garcia
patent: 4050397 (1977-09-01), Vanderleest
patent: 4915048 (1990-04-01), Stanford

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