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High-performance planing monohull sailboat with heeling control

a monohull, high-performance technology, applied in the direction of marine propulsion, special-purpose vessels, vessel construction, etc., can solve the problems of increasing the speed of the monohull and the advantage of the hydrofoil

Inactive Publication Date: 2015-10-01
KITTIHAWK20
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention is a new type of monohull sailboat that has many benefits. It can use larger sails, which means it can go faster and be more stable than other similar boats. It also has a unique design that reduces the angle at which it leans, which makes it easier to control. These features make it better at adapting to different conditions and faster in a variety of water sports. The boat can also use foils that can act as both hydrofoils and planning boards, and combines the benefits of monohulls and catamarans. Overall, the invention has improved performance and stability compared to existing monohulls.

Problems solved by technology

For instance when a catamaran becomes foil borne, its speed increases significantly, but below that hydrofoils offer little advantage.

Method used

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  • High-performance planing monohull sailboat with heeling control
  • High-performance planing monohull sailboat with heeling control
  • High-performance planing monohull sailboat with heeling control

Examples

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Embodiment Construction

[0105]Embodiments of the boat can take a variety of forms, depending on size of boat and performance desired.

[0106]In various embodiments the dimensions and shapes of the hydrofoil and strut may differ. The maximum depth of immersion, the range of attack angles, the shape and camber of the hydrofoil, and the canting angle of the hydrofoil can take various values.

[0107]Means of changing the angle of attack, altering the hydrofoils depth of immersion, and holding the angle of attack and depth of immersion constant can take differing of forms. The adjustment of the angle of attack and depth of immersion can be manual or mechanized.

[0108]Various sail plans including plans utilizing jibs and spinnakers can be the utilized as can various hull designs including flat and curved bottoms. All these possibilities are well known to those familiar with the art.

[0109]In one embodiment of the invention two hydrofoil apparatuses are placed on each side of the boat. This arrangement is particularly ...

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PUM

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Abstract

A sailboat which uses hydrofoils either immersed or planning on the water's surface to resist heeling. The boat uses two hydrofoil assemblies, one for the starboard side of the boat and one for its port side. Each part can generate either positive or negative lift. The attack angles and depths of immersion of each hydrofoil are adjustable. The struts which hold the hydrofoils are designed so that the leeway forces produced by the struts are much lower than the lifts produced by the hydrofoils so there is little or no conflict between the hydrodynamic force produced by the hydrofoil and its supporting strut.

Description

TECHNICAL FIELD[0001]Monohull sailing vessels using hydrofoils and increasing the speed and stability of such vessels.Objective[0002]The objective of the boat is to provide a monohull sailboat which has a substantially greater speed and stability than current monohull sailboats. It (1) enables the use of sails with much larger areas than common sailboats, in some cases larger by a factor of two or more, (2) constrains heeling to low angles, (3) enhances planning and (4) provides a boat with greater stability in a larger range of sailing conditions than usual. In addition the apparatus used to control heel can also reduce the apparent weight of the boat, thereby decreasing displacement and skin friction drags, which then increases boat speed.[0003]A further objective of the boat is to use dual purpose foils which can act as both hydrofoils and planning boards and provide smooth adjustment over a wide range of operating conditions. Yet another objective is to provide boats which combi...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B63B39/06B63B1/26B63H9/04B63B1/24
CPCB63B39/06B63H9/04B63B1/26B63B1/242B63B1/30
Inventor EVELETH, JASON H.
Owner KITTIHAWK20
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