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A sailing hydrofoil, hydrofoil sailboat, or hydrosail is a sailboat with wing-like foils mounted under the hull. As the craft increases its speed the hydrofoils lift the hull up and out of the water, greatly reducing wetted area, resulting in decreased drag and increased speed. A sailing hydrofoil can achieve speeds exceeding double and in some ...
A hydrofoil is a lifting surface, or foil, that operates in water. They are similar in appearance and purpose to aerofoils used by aeroplanes. Boats that use hydrofoil technology are also simply termed hydrofoils. As a hydrofoil craft gains speed, the hydrofoils lift the boat's hull out of the water, decreasing drag and allowing greater speeds.
Hydroptère is a French experimental sailing hydrofoil trimaran imagined by the yachtman Éric Tabarly.The Hydroptère project was managed by Alain Thébault, the design done by naval architects VPLP design [1] and the manufacturing by a group of French high-tech companies.
A sail is a tensile structure, which is made from fabric or other membrane materials, that uses wind power to propel sailing craft, including sailing ships, sailboats, windsurfers, ice boats, and even sail-powered land vehicles. Sails may be made from a combination of woven materials—including canvas or polyester cloth, laminated membranes or ...
Just like a boat, a seaglider initially floats, then as it picks up speed it foils — gliding over the surface of the water using wing-like structures called hydrofoils, which retract as the ...
The Jellyfish Foiler lower hydrofoil has two J-shaped foils and one center T-foil rudder and is pulled by the upper air kite; the system is a closely coupled double-kite system (lower is water kite, upper is an air kite) resulting in a system that will fly through the air and water in an effort to break the 50-knot speed sailing record.
Forces on sails result from movement of air that interacts with sails and gives them motive power for sailing craft, including sailing ships, sailboats, windsurfers, ice boats, and sail-powered land vehicles. Similar principles in a rotating frame of reference apply to windmill sails and wind turbine blades, which are also wind-driven.
Storm surge: Explaining the fury and science behind one of nature's most potent forces. Michael Kuhne. September 3, 2018 at 10:33 AM. 1 / 4.