KR101670665B1 - Super-High Speed Hydrofoil Ship - Google Patents

Abstract

The present invention relates to a super high speed hydrofoil, which is a super high-speed hydrofoil with a bow and stern hydrofoil mounted on the lower surface of the hull, wherein the bottom of the hull comprises a front flat portion formed to be flat from the forehead to aft side, A rear flat portion which is located further downward and which is formed flat on the stern side and an inclined portion that is gently inclined from the bow to the stern side while connecting the front flat portion and the back flat portion and the rear flat portion and the inclined portion are formed on the bottom And a stern hydrofoil is attached to the lower portion of the rear flat portion. The inclined portion is provided with a protruding linear portion provided at a lower portion of the front flat portion, and a seawater inlet Is formed.

Description

{Super-High Speed Hydrofoil Ship}

The present invention relates to a super high-speed hydrofoil having hydrofoils and obtaining propulsive force by a water injection propeller, and relates to super high-speed single-action, dual or multi-hydrofoil.

Conventional displacement type maritime transport by large ships has the advantage of high transportation efficiency because it can transport large quantity of cargo at low cost, but it has a disadvantage that it is slow in speed.

Many shipbuilding engineers have been making great efforts to increase the ship's speed, but in the case of the conventional displacement-type linear system, as the speed increases, the wave resistance increases sharply as well as it is generated in the propeller for propulsion. Due to the hydrodynamic nature of the limitations of the thrust, the speed can not be increased beyond a certain critical speed.

Therefore, in order to dramatically increase the speed of the ship, it is necessary to adopt a linearity reducing resistance by a dynamic effect, or to prevent the rapid increase of the wave resistance by making the linearity of the displacement type ship very thin.

Typical examples are the planing hull boats as well as the air cushion vehicles and hydrified boats, which can be speeded up by the dynamic effects.

First, a sliding type ship is a linear type designed to reduce resistance and improve the high speed performance by sliding the water. It is relatively simple and has been used for a long time ago. However, there is a great fluctuation of the ship in bad weather, There is a drawback that it does not slide.

Thus, despite the fact that it has a history of more than 100 years, today there is no slip-line type with a certain size (about 300 to 400 tons).

Secondly, the air support line blows air to the lower part of the hull to form an air layer between the water surface and the hull, and the hull slides on it to reduce the resistance and increase the speed. The most excellent linearity, even if the waves are not severe due to extreme fluctuations of the hull in the wave, will give the passengers a great discomfort.

In addition, the high vibration of the blower blowing air to float the hull gives the passenger a very uncomfortable feeling regardless of the influence of the sea condition or the waves.

In addition, as the size increases, most of the power is consumed by the power of the blower blowing air between the hull and the sea surface in order to float the hull, which is disadvantageous as it becomes larger and can not be made larger than a certain size.

Finally, Hydrofoil Boat adopts the basic principle of achieving high speed by lifting the hull on the water surface by lifting from the hydrofoil to reduce hull resistance. There are two main ways to support the hull by hydrofoil. One is to support the total weight of the ship by lifting only the hydrofoil, that is, the hull completely floats on the surface of the water and only the hydrofoil system is immersed in water. The other is the buoyancy-lift combined support system in which the gross weight of the vessel is divided and supported by the buoyancy of the ship and lift of the hydrofoil.

There are two different types of ships that support the hull by lifting the hydrofoil: Surface-Piercing Type and Fully Submerged Type.

The surface-penetrating hydrofoil line has a stable stability because the amount of lift required is automatically controlled by changing the flooding area of the hydrofoil according to the line speed and the flooding area of the hydrofoil of the ship is increased to increase the flooding area However, even if the flooding area of hydrofoil changes a little, the fluctuation of lift occurs greatly, so the fluctuation of the hull becomes severe even in small waves.

To overcome this disadvantage, a fully submerged hydrofoil has been developed which completely submerges hydrofoil entirely into water, but it has a disadvantage that it is necessary to install complicated control devices to control lift and stability.

In addition, the hydrofoil is generally advantageous in terms of resistance in that the hull is fully floated on the surface of the water and only the hydrofoil is operated in the water. When the hull is fully floated, propeller propulsion by the inclined shaft is not only possible, but propulsion propulsion can not achieve the speed above the critical velocity as mentioned above. In order to achieve super-high speed faster than the critical speed of propeller propulsion, a water jet propulsion device should be used. In this case, the water-jet inlet installed at the lower part of the hull must be submerged in water It is incompatible with full support.

In addition, the full floating type hydrofoil increases the size and weight of the hydrofoil system which must support the hull when the size of the ship is increased, which hinders enlargement of the ship.

FIG. 1 is a view schematically showing a side surface of a conventional hydrofoil, FIG. 2 is a schematic cross-sectional view of a single horizontal line of a conventional hydrofoil, and FIG. 3 is a cross- FIG. 1 to 3, the solid line crossing the hull is a schematic representation of a stop line or a low speed waterline, and a dotted line crossing the hull is a schematic representation of a waterline at the time of high-speed navigation.

A single line is a linear ship with one fuselage below the deck. A catamaran is a ship with two fuselages separated from each other and with a deck on top of it, and a multi-tiered line means that three or more fuselages are separated, It is a vessel with a line formed so that the deck continues.

The catamaran ship or the multi-conductor line is basically designed to achieve the purpose of high speed by preventing the rapid increase of the wave resistance by speeding the hull by making the hull slim. It is excellent in high speed performance, wide deck area , High stability and excellent handling performance as well as being able to easily increase the size of ship without sacrificing other main characteristics.

As shown in FIG. 1, in a buoyancy-lift composite support type ship equipped with a hydrofoil system, when the ship is lifted by lifting force generated from hydrofoil to reduce the volume of the hull which is submerged in water, the resistance of the ship is reduced, Performance can be expected to be better. However, in reality, when a high-speed hydrofoil of a high-speed hydrofoil with a buoyancy-lift composite system is operated at high speed, continuous sea water is supplied to the sea water inlet of a water injection propeller used as a propulsion device due to the movement of the ship As a result of observations and research conducted by the inventor of the present invention, it has been found that due to the lift generated in the hydrofoil during the high-speed operation, the water line can not be driven at a high speed It is concluded that the sea water inlet at the bottom of the hull is exposed to the outside of the water while the fore and aft part of the hull swing up and down due to the wave encountered during the running of the ship in a lowered condition.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a buoyant-resilient composite support type boat equipped with a hydrofoil to continuously supply seawater to a water injection propeller Speed hydrofoil which enables a smooth high-speed driving.

In addition, as the bow and center of the ship are fully supported on the water surface during high speed operation, the receiving area of the ship is greatly reduced and the ship resistance can be greatly reduced so that the propulsion power required at the same speed can be greatly reduced, Speed hydrofoil.

In order to accomplish the above and other objects of the present invention, there is provided an ultra-high speed hydrofoil having a fore and aft hydrofoil mounted on a lower surface of a hull, wherein the bottom of the hull is formed flat A front flat portion and a rear flat portion which is located further downward behind the front flat portion and flattened toward the stern side and an inclined portion which is gently inclined from the bow to the stern side while connecting the front flat portion and the rear flat portion, And a stern hydrofoil is attached to the lower part of the rear flat part, and the inclined part is provided with a protruding linear part having a rear flat part and a sloped part bottomed on the rear of the front flat part, And a seawater inlet for supplying seawater to the installed water jet propeller is formed Provides a super-fast hydrofoil.

Wherein the buoyant force proportional to the depth of the protruding linear portion and the lift generated at the stern hydrofoil is equal to the lift generated at the forehead hydrofoil during the high speed operation of the hull so that the front flat portion is lifted from the sea surface, The size of the hydrofoil, the size of the stern hydrofoil, and the depth at which the protruding linear portion is submerged in the water surface are selected so as to be correlated with each other.

And the seawater inlet port is formed in a part of the slope portion which is submerged in the water surface during high speed operation of the hull.

According to the present invention having the above-described configuration, the seawater can be continuously supplied smoothly to the water jet propulsion apparatus when the ship is traveling without installing a separate device, thereby enabling smooth high-speed traveling of the ship. In other words, even if the upper and lower yaw and swaying movements are frequently generated by the waves during the running of the ship, the seawater inlet of the inclined portion at the front of the protruding linear portion is still in the water, so the sea water is not supplied instantaneously It is possible to run at a constant high speed at all times without doing anything, and the water injection propulsion system or the marine engine is momentarily overloaded, shortening the life span or reducing the trouble.

In addition, as the bow and center of the ship are fully supported on the water surface during high speed operation, the receiving area of the ship is greatly reduced and the ship resistance can be greatly reduced so that the propulsion power required at the same speed can be greatly reduced, Can be achieved. In other words, when the ship is operating at high speed, the bottom and bottom flat parts of the ship can be completely separated from the water surface by the lift generated from the hydrofoil, thereby greatly reducing the receiving surface area of the ship. The horsepower is greatly reduced, or higher speed performance is achieved at the same horsepower.

1 schematically shows a side view of a conventional hydrofoil.
2 is a view schematically showing a transverse section of a single strand of a conventional hydrofoil.
3 is a view schematically showing a transverse section of a catamaran among conventional hydrofoil lines.
4 is a schematic illustration of a side view of a super high-speed hydrofoil according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation

In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

4 is a schematic view illustrating a side surface of a super high-speed hydrofoil according to an embodiment of the present invention.

4, a super high-speed hydrofoil 100 according to an embodiment of the present invention is provided with fore and aft hydrofoils 112 and 114 on the lower surface of the hull 110. As shown in FIG.

The bottom of the hull 110 has a front flat portion 116 that starts from the bow and is formed flat on the aft side and a rear flat portion 118 that is located further downward to the rear side of the front flat portion 116 and is flattened toward the stern side And an inclined portion 120 gently inclining from the bow to the stern while connecting the front flat portion 116 and the rear flat portion 118. The rear flat portion 118 and the inclined portion 120 are provided at the rear of the hull 110, And a protruded linear portion 122 having a base 120 as a bottom.

A forehead hydrofoil 112 is attached to a lower portion of the front flat portion 116 and a stern hydrofoil 114 is attached to a lower portion of the rear flat portion 118.

A water inlet 120a for supplying seawater to the water jet propeller 124 installed in the inside of the hull 110 is formed in the inclined portion 120.

Here, the size of the forehead hydrofoil 112, the size of the stern hydrofoil 114, and the depth at which the protruding linear portion 122 is immersed in the water surface so that the front flat portion 116 floats from the sea surface during high- It is preferable to configure them to be mutually related.

For example, assuming that the weight of the ship is uniformly distributed throughout the ship and that the ship runs horizontally at high speed, the buoyancy and the stern hydrofoil 114, which is proportional to the displacement of the protruding linear portion 122 during the high- The size of the stern hydrofoil 114 and the depth at which the protruding linear portion 122 is immersed in the water surface so that the sum of the lifts generated in the hydrofoil 112 becomes equal to the lift generated in the forehead hydrofoil 112 So that they are selected and configured to be mutually related.

In addition, the seawater inlet 120a is provided at a part of the slope part 120 that is submerged in the water surface so that seawater can be smoothly supplied to the water injection propeller 124 installed inside the hull 110 during high- .

The high speed hydrofoil disclosed in the present specification has a relatively wide lower area forward flat portion spaced apart from the water surface at the time of high speed driving and only an inclined portion and a rear flat portion that can be formed with a relatively narrow bottom area are located below the water surface, The resistance is sufficiently reduced, which is advantageous for high-speed travel.

In addition, since the protruding linear portion formed at the stern is formed to have a sufficient depth, at least a part of the protruded linear portion can be kept in the water during the high speed operation of the ship and the seawater inlet is formed at this position. The water can be continuously supplied smoothly, and the ship can run smoothly.

In this case, since the portion where the seawater inlet port of the protruding linear portion is formed is always in the water, the seawater inlet is exposed to the outside of the water due to the fluctuation caused by the wave, Because the seawater is not supplied instantaneously by the propeller, it is possible to travel at a constant high speed without losing the speed of the ship, and the water jet propulsion system is overloaded to shorten the life or reduce the trouble.

Although the preferred embodiments of the present invention have been described with reference to the accompanying drawings, it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit of the invention It can be understood that it is possible.

110; hull
112; Athlete
114; Stern hydrofoil
116; The front flat portion
118; The rear flat portion
120; Inclined portion
120a; Seawater inlet
122; The protruding linear portion
124; Water jet propeller

Claims (4)

In a high-speed hydrofoil with a bow and stern hydrofoil installed on the lower surface of the hull,
A bottom portion of the hull is formed with a front flat portion which is formed to be flat on the aft side starting from a bow, a rear flat portion which is located further downward to the rear side of the front flat portion and is formed flat on the stern side and a rear flat portion which is connected to the front flat portion and the rear flat portion And a protruding linear portion provided at the rear of the hull and having a rear flat portion and a sloped portion as a bottom,
A forehead hydrofoil is attached to a lower portion of the front flat portion, a stern hydrofoil is attached to a lower portion of the rear flat portion,
Wherein the inclined portion is formed with a seawater inlet for supplying seawater to a water jet propeller installed inside the hull.
The method according to claim 1,
Wherein the buoyant force proportional to the depth of the protruding linear portion and the lift generated at the stern hydrofoil is equal to the lift generated at the forehead hydrofoil during the high speed operation of the hull so that the front flat portion is lifted from the sea surface, Characterized in that the size of the hydrofoil, the size of the stern hydrofoil, and the depth of the protruding linear portion are immersed in the water surface are selected so as to be correlated with each other.
The method of claim 2,
Wherein the seawater inlet port is formed in a part of the slope portion which is submerged in the water surface during high speed operation of the hull.
4. The method according to any one of claims 1 to 3,
Wherein the super high-speed hydrofoil is a twin or multidisciplinary hydrofoil.

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