Hydrofoil supported water craft
AssigneeUniversiteit Van Stellenbosch
InventorKarl Gunter Wilhelm Hoppe
Life of this patent
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Abstract
The invention provides a hydrofoil equipment water craft comprising at least one hull member, terminating at a bow and a stern, a front hydrofoil member arranged in the zone of the bow of the hull, at least partially below the hull; and a rear hydrofoil member positioned to the rear of the longitudinal center of gravity (LCG) of the hull, the front hydrofoil member being at least partially offset transversely relative to the rear hydrofoil member so that the front hydrofoil or rear hydrofoil are at least partially disposed in separate longitudinal flow streams.
Claims29
A hydrofoil equipped water craft having at least one hull member, terminating at a bow and a stern, and a hydrofoil system whereby the hull is raised at the design speed of the craft so that at least a portion of the stern of the hull remains partially submerged comprising:
- a front hydrofoil member positioned adjacent the bow of the hull, below the hull;
- a rear hydrofoil member positioned to the rear of the longitudinal center of gravity (LCG) of the craft;
- the rear hydrofoil member being disposed at least partially above the level of the front hydrofoil and at such a level that it is unable to lift the portion of the stern of the hull free of the water;
- and
- the front hydrofoil member being at least partially offset transversely relative to the rear hydrofoil member so that the front hydrofoil member or rear hydrofoil member are at least partially disposed in separate longitudinal flow streams.
A hydrofoil equipped, catamaran-type water craft comprising:
- two demi-hull members each terminating at a bow and a stern;
- a front hydrofoil member arranged adjacent the bow of each demi-hull, with at least an outwardly directed portion of each front hydrofoil member being disposed below an associated demi-hull;
- a rear hydrofoil member positioned to the rear of the longitudinal center of gravity (LCG) of the demi-hulls, the front hydrofoil members being at least partially offset transversely relative to the rear hydrofoil member so that at least the outwardly directed portion of each front hydrofoil is disposed outside the longitudinal flow stream of the rear hydrofoil;
- and
- wherein the rear hydrofoil member is disposed at least partially above the level of the front hydrofoil members and at such a level that it is unable to lift the portion of the sterns of the hulls free of the water.
Dependencies are inferred from the claim text.