Multifunction hydrodynamic and buoyant hull extension for planin

Details Multifunction hydrodynamic and buoyant hull extension for planin Multifunction hydrodynamic and buoyant hull extension for planin

1991-10-03

1993-07-06

Peters, Jr., Joseph F.

Ships

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

Having hydrofoil

114271, 114284, B63B 124, B63B 126, B63B 100, B63B 122

Patent

active

052244369

ABSTRACT:
A hull extension is attached at an appropriate distance above the hull bottom surface to the stern of a planing water craft so as to be at least partially submerged at subplaning speeds and totally unsubmerged at planing speeds, effectively increasing hull length at subplaning speeds while not affecting hull length at planing speeds. A "step" effect is thus featured whereby the hull extension is not in contact with the water once planing commences. Hydrodynamic and buoyant efficiency is increased by the hull extension at subplaning speeds and unaffected thereby at planing speeds. The hull extension also offers practical utility in terms of providing additional protection, deck space and mounting area.

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Clement, E. P., and Blount, D. L., "Resistance Tests of a Systematic Series of Planing Hull Forms", presented at the Annual Meeting of the Society of Naval Architects and Marine Engineers (Nov. 14 and 15, 1963), pp. 491-579, New York, 1964.

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