KR950011592B1 - Mid-large high speed hydrofoil catamaran using in regardless weather - Google Patents

Abstract

The hydrofoil craft comprises a couple of wave ploughs (1) installed in the lower part of a hull (4), bow and stern hydrofoils each of which is supported to the hull by a couple of struts (3) and equipped with an individual lift flap (5-a, 5-b), and a couple of hydraulic pumps (7) with a piston (8) for controlling the bow and stern lift flaps. The hydrofoil system with the struts is connected to the hull by a flange connection method.

Description

Catamaran in all-weather medium to large high speed underwater

1 is a conceptual diagram of a Planing Hull.

2 is a conceptual diagram of a surface-piercing type hydrofoil boat.

3 is a conceptual diagram of a fully submerged type hydrofoil boat.

4 is a conceptual diagram of the Surface Effect Ship.

5 is a front view of the basic shape of the hydrofoil catamaran of the present invention.

6 is a side view showing the basic shape of the hydrofoil catamaran which is the present invention and the difference in operation between bad weather and pure weather.

7 is a conceptual diagram of the plane and lift control plate of the hydrofoil.

8 is a conceptual diagram for adjusting the cross section of the hydrofoil and the vertical adjustment of the lift control plate (Flap).

9 is a conceptual diagram of a flange connection between a hydrofoil column and a hull.

10 is a control conceptual view of the hydrofoil lift control plate (Flap).

The present invention relates to catamarans of all-weather medium-to-large ultrafast underwater.

Maritime transport will have a long history that can be said to have started with mankind.

In particular, the sea transportation by the conventional large displacement type ship has the advantage that the transportation efficiency is higher than that of any transportation because it can transport a large amount of cargo at low cost.

However, since the emergence of aircraft in this century, many cargoes have been taken away by air transportation due to its speed, and this phenomenon is particularly remarkable in passenger transportation than general cargo.

Therefore, there is a growing need to greatly increase the speed of operation of ships today, either for competition with air transport or due to the need to improve the standard of living.

To this end, many shipbuilders have made great efforts for a long time. However, as the high speed in the conventional displacement type linearity increases, the sowing resistance increases rapidly and the propulsion of the propeller must be generated for propulsion. This made me realize that it is not practical to increase the speed beyond any duration.

Therefore, in order to dramatically increase the speed of the ship, it is necessary to adopt the linear reducing the resistance by the dynamic effect, or to reduce the overall width of the displacement type vessel to a very small length, that is, the linear It should prevent a sudden increase.

The linear speeds up by kinetic effects include the traditional Planing Hull Boat, the Hydrofoil Boat and the Air Cushion Vehicle.

Sliding ships have already been put into use in the early 20th century, and small hydrofoils and small air flotation ships have been put into use as small patrol boats or small coastal passenger ships during the sixties and seventies.

However, these types of ships have a fatal disadvantage that they are generally economically poor due to their characteristics, and their inability to withstand in bad weather is not only inefficient, but also not large.

Looking at the characteristics according to the ship's ship type in more detail by the accompanying drawings as follows.

Figure 1 shows the concept of a slide line.

As shown in FIG. 1, the slide line is a linear type designed to reduce the resistance and improve the high speed performance by sliding on the water, and is relatively simple. Increasing the size, that is, if there is a disadvantage that does not slide.

Thus, despite nearly 100 years of history, there are almost no slides of any size (about 300-400 tons) today.

Hydrofoil boat is a type of ship that removes body resistance and achieves high speed by lifting the hull completely on the surface by the lift force generated by hydrofoil. As shown in FIG. 2, Surface-Piercing Type and There are two different types of fully submerged types as shown in FIG.

As shown in FIG. 2, the hydrofoil in surface penetration changes according to the ship speed so that the amount of lift required is automatically adjusted and the flooding area of the inclined hydrofoil increases when the ship is inclined. Therefore, there is an advantage that the stability (Stability) is excellent, but even if a small change in the area of the water is a big change in the generated lift, so the fluctuation of the hull even a little wave naturally.

In order to compensate for these disadvantages, as shown in FIG. 3, a fully submerged hydrofoil has been developed that completely submerges the entire submerged body into the water, but the installation of a complicated control device for adjusting lift and stability becomes essential.

Hydrofoils generally increase the size and weight of the hydrofoil system, which is required to support the hull when increasing the size of the ship, at a faster rate than the increase in weight due to the increase in the size of the ship. The weight of the system and its attached machinery accounts for most of the hull weight.

Therefore, the larger the size becomes disadvantageous and finally has the advantage that it can not be larger than any size.

In addition, the complicated propulsion system and poor propulsion efficiency are one of the major disadvantages of hydrofoils.

The air flotation ship is a linear line designed with the concept of blowing air under the hull to create an air layer between the water surface and the body and sliding over it to reduce the resistance and increase the speed. A more advanced form of the concept is the Surface Effect Ship.

Surface effect lines are known to be the most linear in high speed performance in the category of small ships. However, the fluctuations of the hull in the waves cause extreme discomfort to passengers even when the waves are not severe.

In addition, the high vibration (high frequency vibration) of the fan, which blows air to support the hull, also causes passengers to be offended when the sea is calm.

However, the biggest problem is that the larger the size, the more power is consumed by the power of the blower that blows the air between the hull and the surface to support the hull. Therefore, as the hydrofoil is larger, it is disadvantageous and cannot be enlarged to any size. to be.

Catamaran Ships, on the other hand, have been conceived to achieve the purpose of high speed by basically slimming the body and preventing the rapid increase of wave resistance according to the speed. Generally, high speed performance, large deck area, Not only does it have excellent characteristics such as high stability and excellent maneuverability, but also has been of interest to shipbuilding engineers for many years due to its many practical advantages that it is easier to build, operate and maintain than other ship types.

Among the many advantages of catamarans, however, the most notable advantage is that it can easily increase the size of the ship without sacrificing other characteristics, that is, it can be easily enlarged.

In order to further enhance the general advantages of these catamarans, the inventors have combined the hull of the catamarans supported by buoyancy with the underwater system generating the dynamic lift, and all weather to remarkably improve the high speed and inward performance. Invented a catamaran of ultra-fast medium to large size underwater.

Hereinafter, the configuration of the present invention will be described.

Sharp blade-shaped wave cutting (1) is installed at the bottom of the fore part and both the hydrofoil (2) or the stern, or the bow and the stern are supported by the column (Strul). A lift control plate (5-b) is installed on the right and stern hydrofoils, and the connection between the hull and the hydrofoil system is a flange connection method (6), and the lifting plate is a hydraulic pump (7). It is a catamaran boat which has a function which can be controlled directly in connection with the piston 8, or a catamaran boat which has any of the above-mentioned devices and functions.

EXAMPLE

Figure 5 shows a front view of the basic shape of the hull of the present invention.

As can be seen in FIG. 5, first, two blade-shaped wave cutters (1) are installed on the bottom of the hull bow part, and the role of the wave cutter (1) plays the role of impact force due to the waves when the weather is severe in bad weather. It is to make it easy to navigate the waves without receiving the Slamming Force.

And the fully submerged hydrofoil system (2) is connected to the hull (4) by two columns (Strut) (3) and the load according to the loading state of the cargo in the hydrofoil, as can be seen in Figures 6 and 7 In order to cope with the change or to control the hull movement in bad weather, lift control plates (Flap) (5-a and 5-b) are attached to the tail.

These lift-adjusting plates (5-a and 5-b) provide the optimum speed and inward performance by properly adjusting the ratio of the buoyancy by the hull and the lift by the hydrofoil system in a given sea condition.

As shown in Fig. 7, the lift control plates 5-a and 5-b are provided with one, two or more in the midship depending on the size of the ship, and two in the stern hydrofoil, one on each side. By installing and adjusting it properly, it greatly reduces hull movements such as heave, roll, pitch, etc. in bad weather, prevents excessive transverse tilt at high speed, and generates a lot of lift when the sea is calm. This allows the hull to float a lot above the water level, reducing resistance and making it faster.

In addition, as can be seen in Figure 9, the hydrofoil system is mounted to the hull by the flange connection (6) method, making installation and removal extremely easy.

As can be seen in FIG. 10, the lift control plate is directly connected to the piston 8 of the hydraulic pump 7 so that it can be adjusted quickly and easily with little force. will be.

As such, the concept of a catamaran in ultra-high speed underwater that properly combines buoyancy and lift, and various devices actually developed to realize this concept are the first inventions in the world by the present inventors.

Claims (1)

At the bottom of the fore part, a sharp blade-shaped wave cutting (1) is installed, and both the bow (2), the stern, the bow, and the stern are supported by the column (Strul), Lift lift plate (5-b) is installed on the fore and aft hydrofoils, and the connection between the hull and the hydrofoil system is a flange connection method (6), and the lift plate is a hydraulic pump (7). A catamaran of all-weather medium-to-large, ultra-high speed underwater, which has a function that can be controlled in direct contact with the piston (8).