초록 ▼

A tetrahedrally shaped pivotable sailing frame of four spars and a sail with balanced hydrofoils is disclosed. A hydrofoil sailboat is created by pivotally attaching the frame to a hull along a longitudinal axis of the hull. Tacking is accomplished by rotation of the frame about that axis. Although

A tetrahedrally shaped pivotable sailing frame of four spars and a sail with balanced hydrofoils is disclosed. A hydrofoil sailboat is created by pivotally attaching the frame to a hull along a longitudinal axis of the hull. Tacking is accomplished by rotation of the frame about that axis. Although the sailing frame can be adapted to a variety of types of hulls, including windsurfers, catamarans, and multiple-hulled craft, a preferred embodiment of a hull is disclosed which in combination with the sailing frame affords the proper lift and forward vectors and obviates the need for a keel, live or dead ballast, or sail adjustments. The lift affords very high speeds and minimal wetted surface. The tetrahedral structure of the sailing frame is stiff, giving a level, stabilized ride and permitting an optimal surface area of sail. The hull design provides swift, easy tacking and reduces the possibility of backwinding.

대표청구항 ▼

A sailing frame for connection to a hull having part and starboard sides for a means of supporting a sail member comprising: first and second hydrofoil means on said sail member for providing hydrofoil forces thereon; pivoting means for allowing said sail member to rotate from a first orientation in

A sailing frame for connection to a hull having part and starboard sides for a means of supporting a sail member comprising: first and second hydrofoil means on said sail member for providing hydrofoil forces thereon; pivoting means for allowing said sail member to rotate from a first orientation in which said first hydrofoil means is off said port side of said hull into a second orientation in which said second hydrofoil means is off said starboard side of said hull and vice versa; first and second sail-connecting spar means, and forward and aft spar means for maintaining a generally tetrahedral shape of said frame; spar connector means for connecting together first ends of each said spar means; first connector means for connecting a second end of said first sail-connecting spar means to a second end of said aft spar means; second connector means for connecting a second end of said second sail-connecting spar means to a second end of said forward spar means; third connector means for connecting a second end of said aft spar means to a second end of said second sail-connecting spar means; and fourth connector means for connecting a second end of said forward spar means to a second end of said second sail-connecting spar means; wherein said sail member is connected between said second ends of said first and second sail-connecting spar means.