Stability maintenance device of gliding ship during high-speed sailing

Abstract

To provide a stability maintenance device of a gliding ship capable of suppressing the side-to-side rocking and the rapid rise of a bow elevation angle of a high-speed ship gliding at high speed on the sea surface.SOLUTION: A frame 10 protruding to the rear of a hull and a plate 11 attached to the tip thereof are provided as means and device to suppress the increase in an elevation angle above a certain level when a gliding ship suddenly rises due to high waves and so on. The frame 10 projects horizontally on a deck about half length of a total ship hull length. The plate 11 does not touch the sea surface while the hull sails almost horizontally to the sea surface, but the plate 11 is set to touch the sea surface when the hull suddenly turns upwards. This prevents the bow from jumping-up, that is, the plate 11 suppresses the bouncing of the bow with very strong upward force while the gliding ship sails at the high speed of 100 km / h or over.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to the stability of a gliding craft when it glides across the sea surface at a speed of 200 to 300 km per hour. [Background technology]

[0002] In addition to conventional high-speed ships, there are several types of ships that can sail at high speeds on the sea, such as hydrofoils and hovercrafts, but all of them have some kind of propulsion equipment or devices below the surface of the sea, which creates resistance when the speed reaches 100-150 km / h, making them difficult to use in terms of fuel consumption and other factors at speeds above that. In contrast, ships that use light, thin, and strong floats made of carbon fiber or other materials and have propellers or jet engines attached to them to obtain thrust to sail, such as gliders, have the bottom of the ship completely rise above the sea surface at speeds of 60-70 km / h or more, making the resistance with the seawater infinitesimal, and making it possible to reach speeds of, for example, 200-300 km / h. In this case, the direction change instead of the caji is achieved by a vertical stabilizer, the same as that of an aircraft, attached to the stern of the ship. This type of high-speed boat, which glides on the sea surface, has an overall structure similar to the takeoff weight of an aircraft with the same propulsion and horsepower. In other words, the weight of the aircraft's wings, wheels and other take-off and landing gear, and the frame that supports them, is roughly equal to that of a gliding boat. In other words, lightweight floats strong enough to withstand waves can be made from carbon fiber, making the above new type of high-speed boat possible. [Prior art documents]

[0003] [Patent Document 1] Patent application 2021-201217 Summary of the Invention [Problem to be solved by the invention]

[0004] However, when sailing at high speeds on the ocean surface at 200-300km per hour, if the waves are high the hull will sway at various angles, which reduces stability. The ride will become uncomfortable and in the worst case scenario there will be a risk of capsizing. Specifically, there will be large side-to-side swaying, rolling, front-to-back swaying, and pitching. Many small propeller planes also have speeds of less than 200km per hour and can even do somersaults, and gliding boats will also face the same phenomena that would be unthinkable for a normal ship if they exceed that speed.

[0005] Especially when a high wave hits the boat from the front, the angle of elevation of the boat increases rapidly. In particular, in the case of a gliding boat, the float area is large and the air resistance on the bottom of the boat is quite large, so a horizontal stabilizer that is attached integrally to the vertical stabilizer of an aircraft cannot possibly provide the force to return the boat to a horizontal position. In the worst case scenario, if the boat becomes uncontrollable, the entire boat will flip over, which is the same phenomenon as an airplane doing a somersault, and this is extremely dangerous.

[0006] Similarly, because the entire hull is light, it is prone to shaking in high side waves, and the risk of capsizing is higher than that of a normal ship. [Means for solving the problem]

[0007] A glider according to one aspect of the present invention for solving the above problems has a float with a width that is 30 to 50% of the overall length, a thickness that is 5 to 10%, and a length of several to several tens of meters, and is equipped with a cabin, a cockpit, a propeller, and a jet engine on it, and has a maximum speed of 200 to 300 km / h.A spoiler is attached to the bow of the gliding craft, like a spoiler attached to the rear of an aircraft's main wing, to generate downward force from air resistance to prevent the bow from lifting off the water when the angle of attack relative to the direction of travel of the entire hull increases at high speeds.

[0008] A gliding boat according to another feature of the present invention has water tanks inside the bow and rear of the boat's float, with the amount of water inside being enough to fill one tank with water, and both tanks can be transferred using a pump or the like. The water is moved to the rear when setting sail, and to the front when traveling at high speed, so that the hull can be kept level by suppressing the rise and fall of the hull due to air resistance and waves.

[0009] In a gliding boat according to yet another feature of the present invention, arms with arc-shaped cross sections that are nearly circular extend horizontally from the left and right sides of the bow of the float, approximately half the height of which is maintained at the same height as the deck of the float by a hydraulic device or the like, so that when the hull tilts to the left or right, the tips of the arms touch the sea surface and obtain a strong repulsive force to push back the tilt, and when the boat approaches a quay, the arms can be operated to fold up on the float so that they do not become an obstacle.

[0010] In a glider according to yet another feature of the present invention, several pipes or frames with a length of about half the total length protrude horizontally from the stern of the float, and at the end of these are attached plates with a width of about half the length of the float, which come into contact with the sea surface when the hull faces upward, providing a pushing force that prevents the angle of elevation from increasing any further. Effect of the Invention

[0011] According to the present invention, a gliding craft traveling on the ocean surface at a high speed of 200 to 300 km per hour can maintain stability by always keeping the hull level thanks to several pieces of equipment attached to the hull, even when the bow of the craft is tilted upwards due to waves or wind from ahead, causing the angle of elevation to rise rapidly, or when the craft is tilted significantly from side to side due to cross waves. [Brief description of the drawings]

[0012] [Figure 1] A side view of a glider showing an embodiment of the present invention. [Diagram 2] A plan view of a glider showing one embodiment of the present invention. [Diagram 3] A front view of a glider showing an embodiment of the present invention. [Figure 4]A plan view of the inside of a float of a glider showing one embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

[0014] FIG. 1 shows a side view of a glider according to an embodiment of the present invention, FIG. 2 shows a plan view, FIG. 3 shows a front view, and FIG. 4 shows an internal plan view of the float. In the case of a small glider, the total length is 5 to 6 m, the width is about half that, the thickness of the float 1 is about 10% of the total length, and the height of the cabin 2 is about 1.5 m in the case of a small glider. The total length of a large glider is 20 to 50 m. The ratio of the width, etc. is almost the same as that of a small boat. The engine 3 of the glider can be installed in various positions like an aircraft, and the type can be selected from a gasoline engine with a propeller, a jet engine, etc., but all of them generate propulsion on the ship. The overall weight of this type of glider is close to that of an aircraft with the same engine power, and is significantly lighter than a normal ship. Therefore, when the speed exceeds 100 km / h, the bottom of the ship completely rises from the sea surface and the ship enters a gliding state, and if the engine power is increased, a speed of 200 to 300 km / h is possible.

[0015] In that case, a new problem will arise. When the speed exceeds 100 km, float 1 will suddenly turn upwards when it encounters a high wave from the front, meaning that the angle of elevation with respect to the direction of travel will increase. This means that the risk of the entire bottom of the ship turning upwards increases. This requires that the angle of elevation must be immediately lowered, in other words, the entire ship be returned to a horizontal position, and one method of doing this is spoiler 4, which is attached to the bow deck so that its lower tip can move to the deck. When the ship leaves port, it is tilted horizontally to the deck, but when the angle of elevation of the ship increases, spoiler 4 is automatically raised by a hydraulic device or other device at an angle of 30 to 50 degrees with respect to the direction of travel, and the downward force of air resistance is obtained to return float 1 to a horizontal position. However, it goes without saying that when spoiler 4 is raised, it is not high enough to cover the front of cockpit 2.

[0016] Gliding boats also have devices to maintain stability in the direction of travel, namely, a pair of water tanks 5 attached to the bow and stern of float 1 as shown in Figure 4. These contain enough water to fill either one, and the water is transferred using pump 6. When the glider sets sail, it is better to have the bow pointing slightly upwards in order to increase speed, in which case all of the water is transferred to water tank 5 at the stern. Next, when the speed increases, water is transferred from tank 5 at the stern to water tank 5 at the bow as appropriate to prevent the bow from floating up. The capacity of water tank 5 is designed to be an amount that can achieve the above effects, while at the same time not increasing the overall weight too much.

[0017] In order to maintain the stability of the whole when the waves are high, it is also possible to fill the inside of the float 1 shown in Figure 4 with seawater. The inside of the float 1 is structurally constructed by assembling light and strong plate-like structural materials 9 made of carbon fiber or the like at regular intervals in the vertical and horizontal directions in a lattice pattern, and the upper deck and the lower bottom of the hull are covered with plates also made of carbon fiber as if they were laid on a floor, forming the whole of the float 1. The rounded parts of the bow and other parts are molded and assembled, and these are bonded together and covered with carbon fiber to reinforce the bridge. With this method, it is possible to manufacture a float for a fairly large gliding boat. The inside of the float 1 is characterized by the fact that about the upper half of the inside is covered with buoyancy material, and the lower part is a ballast tank divided into several parts. The seawater in the ballast tank is completely removed during normal navigation without the need for any special equipment, but when the waves are high, a certain amount of seawater can be put in to lower the center of gravity and increase the stability of the hull.

[0018] When the ship's hull sways sideways due to waves, it tilts significantly and there is a risk of it capsizing, so as to be prepared for this, pipe-shaped arms 7 are attached to both sides of the bow of float 1 at the same height as the deck of float 1, i.e. horizontally, as shown in Figures 1 to 3, and both arms 7 are extended by hydraulic devices 8 and can be stored in float 1. When the waves are high, the arms 7 naturally extend by hydraulic devices 8, and when the ship tilts significantly to the side, the tips of the arms 7 come into contact with the sea surface, and the strong repulsive force and buoyancy prevent further tilting and push it back. The arms 7 become an obstacle when docking against a quay, so they are stored in both chords of float 1.

[0019] As a means or device for instantly suppressing the rise in the elevation angle when the hull suddenly turns upward due to high waves, etc., there is a frame 10 protruding from the rear of the hull and a plate 11 attached to its tip, as shown in Figures 1 and 2. The frame 10 is about half the length of the hull horizontally to the deck, and the plate 11 does not touch the sea surface when the hull is sailing almost horizontally on the sea surface. However, when the hull suddenly turns upward, the plate 11 comes into contact with the sea surface. When the glider is traveling at high speeds of 100 km / h or more, the plate 11 receives a very strong repulsive force from the sea surface, which suppresses the bow from bouncing up. The plate 11 plays a role equivalent to the tail of an aircraft, and does not require a device to adjust the angle, but has considerable strength to withstand strong waves from the sea surface. In addition, if the overall length is too long to be convenient when pulling the hull up to the quay and storing it, the frame 10 can be made to bounce up vertically at the attachment part of the deck at the stern, or can be made removable. [Explanation of symbols]

[0020] 1 Float 2. Cockpit and cabin 3 Engine 4 Spoilers 5. Water tank 6. Pump 7 Arms 8. Hydraulic system 9 Plate-shaped structural materials 10 frames 11 Plate

Claims

1. The width is 30-50% of the overall length, the thickness is 5-10%, and the overall length is a few to a few tens of meters. The gliding craft has a cabin, a cockpit, a propeller, and a jet engine on a float, and can reach a maximum speed of 200-300 km / h. A spoiler is attached to the bow of the gliding craft, like a spoiler attached to the rear of an airplane's main wing, to generate downward force from air resistance to prevent the bow from lifting off the water when the angle of attack relative to the direction of travel of the entire hull increases at high speeds. A gliding vessel characterized by

2. Water tanks are provided inside the bow and rear of the float of the glider, The amount of water inside is set to fill one side, Both water tanks are designed to be able to transfer water using a pump, etc. The water is moved to the rear when the ship departs, and to the front when sailing at high speed, allowing the ship to remain level while suppressing the rise and fall of the ship's hull due to air resistance and waves.

2. The glider according to claim 1 ,

3. From the left and right sides of the bow of the float of the glider, an arm with an arc-shaped cross section close to a circle is attached to the outside of both sides, The arm is extended horizontally, so that it is roughly half the height of the hull and is kept at the same height as the deck of the float using hydraulic devices, etc. When the hull tilts to the left or right, the tip of the arm touches the sea surface and receives a strong repulsive force to push the tilt back, In addition, when approaching the quay, the arms can be folded up onto the floats so that they do not become an obstacle.

3. The glider according to claim 1,

4. Several pipes or frames are horizontally extended from the stern of the float of the glider, each of which is about half the length of the float. A plate was attached to the end of the float, half as wide as the float and half as long, so that when the hull faces upward, it touches the sea surface and creates a pushing force to prevent the angle of attack from increasing any further. The glider according to any one of claims 1 to 3,

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