Stepped flotation apparatus

Details Stepped flotation apparatus Stepped flotation apparatus

1983-08-15

1985-07-16

Blix, Trygve M.

Ships

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

Having fluid channeling or entrapping configuration

114291, 114 56, 114 67A, B63B 138

Patent

active

045289310

ABSTRACT:
A hull or flotation arrangement for an apparatus moving through water is provided with steps forming a plurality of surfaces on which the apparatus rides. The steps are arranged such that the lower edges of a predetermined number of the steps extend deeper into the water than a predetermined number of the lower edges of the remaining steps. The lower points of the steps are arranged so that predetermined numbers of them are deeper than predetermined numbers of others, so that there is a progression extending deeper and deeper into the water. The steps are so constructed that as the apparatus is moved forward, it rises upwardly in the water, causing the steps to rise out of the water progressively as the speed increases, with the hull then riding on only a few steps, thus reducing drag and increasing efficiency.

REFERENCES:
patent: 1316762 (1919-09-01), Bigelow
patent: 2039585 (1936-05-01), Eddy
patent: 2296977 (1942-09-01), Brien
patent: 2423860 (1947-07-01), Van Patten
patent: 3561390 (1971-02-01), Wallace
patent: 4348195 (1982-09-01), Lantz

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