Sailing monohull tri-foiler

摘要

A tri-foil sailboat and powerboat are described having retractable hydrofoils with independently adjustable angles of attack allowing the hull to be fully lifted from the water and the sailboat to travel at more than twice the wind speed.

主权项

1. A sailing monohull trifoiler comprising:
a hull; a mast extending vertically from the hull, an aft hydrofoil; and two forward hydrofoils, each extending from the hull along a line extending at an angle Φ from a vertical centerline extending from the hull, each forward hydrofoil comprising:
an extendable section having a retracted position in which the extendable section is disposed inward of the hull and an extended position in which extendable section is adapted to extend outward from the hull, the extendable section also adapted to be pivotable about a point on the line extending at angle Φ; anda planning section rigidly connected to one end of the extendable section, whereby the angle of attack α of the planning section is changed as a result of the pivoting of the extendable section.