초록 ▼

A hydrofoil craft according to the invention is provided on the bottom of the hull with at least one, usually several, air cushion recesses arranged along the middle of the bottom in a fore-and-aft direction. The air cushion recesses each forms a groove having the upwardly indented bottom, the upper

A hydrofoil craft according to the invention is provided on the bottom of the hull with at least one, usually several, air cushion recesses arranged along the middle of the bottom in a fore-and-aft direction. The air cushion recesses each forms a groove having the upwardly indented bottom, the upper wall front end, to be deeper and becoming shallower toward the rear end and resembling a triangle or sector in shape when viewed in a longitudinal section and generally to be a rectangle in shape when viewed in a plane. The angle from the shallowest end of the air cushion recess to the deepest end is within 1°to 30°and the two side walls on the sides of the bulwarks of the recess extend a little to the lower parts of the fore-and-aft end walls. The hydrofoils are mounted across the lower parts of the air cushion recesses and are close to the air cushion recesses. The front-wall type upper wall of the front-most air cushion recess is provided at the highest place with at least one blast orifice for ejecting pressure air.

대표청구항 ▼

A hydrofoil craft comprising: a hull having a bottom side; at least one air cushion recess extending along the bottom side in a fore-and-aft direction, the air cushion recess being in the form of a hollow groove and being of greater depth toward a bow end of the air cushion recess and becoming shall

A hydrofoil craft comprising: a hull having a bottom side; at least one air cushion recess extending along the bottom side in a fore-and-aft direction, the air cushion recess being in the form of a hollow groove and being of greater depth toward a bow end of the air cushion recess and becoming shallower toward an aft end of the air cushion recess, the air cushion recess being substantially triangular in shape along a longitudinal section of the hull and substantially rectangular in plan view, the air cushion recess being disposed below an at-=rest waterline of the hydrofoil craft; at least one foil disposed on the bottom side and extending transversely across the air cushion recess; and at least one jet means for ejecting pressurized gas into the air cushion recess, the jet means being disposed in a forward portion of the air cushion recess.