초록 ▼

The present invention concerns hull shapes for a surface effect ship, including a catamaran type supported structure with two side walls (100) connected by a center platform (200), able to operate either as a buoyant displacement vehicle, or as an air cushion supported vehicle, the side walls (100)

The present invention concerns hull shapes for a surface effect ship, including a catamaran type supported structure with two side walls (100) connected by a center platform (200), able to operate either as a buoyant displacement vehicle, or as an air cushion supported vehicle, the side walls (100) confining, with two sealing devices (310, 320), the supporting center air cushion (c). The shape features are as follows: each side keel (100) includes a floor segment (110), an inner wall (120) facing the air cushion (c), and an outer side wall (130); the floor segment is angled upwardly with respect to a horizontal plane, the angle increasing continuously from the after part to the fore part of the keel until forming a deep V at the most fore part; the inner side wall (120) is nearly vertical in the after and fore part and presents a bulge in its upper center part (170); the outer side wall (130) evolves from a concavely curved surface to a planar surface resulting in optimum performance for both modes of operation either as an air cushion vehicle or as a buoyant displacement vehicle.

대표청구항 ▼

A ship hull for a surface effect ship including a catamaran type supported structure with a center structure able to operate either a a buoyant displacement vehicle or as an air cushion supported vehicle, said hull comprising: two keels connected by said center platform, said keels confining with tw

A ship hull for a surface effect ship including a catamaran type supported structure with a center structure able to operate either a a buoyant displacement vehicle or as an air cushion supported vehicle, said hull comprising: two keels connected by said center platform, said keels confining with two sealing devices the supporting air cushion, each keel including a floor segment, an inner side wall facing the cushion, and an outer side wall, wherein: the floor segment is angled upwardly in a direction away from said air cushion with respect to a horizontal plane defining an angle therebetween, said angle increasing continuously from an aft end to a fore end of said each keel, said each keel forming a deep V-shape at the fore end; said inner side-wall is substantially vertical and planar proximate the fore and aft ends of said each keel and includes an arcuate inwardly directed bulged portion at an upper central portion of said inner side wall; the outer side wall has a transverse cross-sectional shape which changes continuously along the length of said each keel from a curve concave outwardly from said air cushion at the aft end to a substantially linear shape proximate the fore end.