WO2016204349A1

WO2016204349A1 - Cavitator system of supercavitating underwater vehicle using compressed air tank

Info

Publication number: WO2016204349A1
Application number: PCT/KR2015/010973
Authority: WO
Inventors: 안병권
Original assignee: 충남대학교산학협력단
Priority date: 2015-06-19
Filing date: 2015-10-16
Publication date: 2016-12-22
Also published as: KR101570323B1

Abstract

The present invention relates to a cavitator system of a supercavitating underwater vehicle using a compressed air tank. According to the present invention, cavitation is formed not by using exhaust gas of an underwater vehicle but by using compressed air inside a compressed air tank, and thus the configuration of a ventilation system therefor becomes very simple, and further, properties of the compressed air such as temperature, pressure, substance, etc. are even, thereby enabling the stable formation of a supercavitation according to the passing of time. Further, in the early part of a launch of the underwater vehicle, a conversion-type cavitator maintains a conical shape, thereby enabling the reduction of resistance and excitation force, and the conversion-type cavitator consecutively changes into a circular disk shape as speed increases, and the shape of a supercavitation that occurs therefrom also enlarges, and thus fewer restrictions apply to the body shape of the underwater vehicle.

Description

[Explanation of invention]

[Name of invention]

Cavitation System of Transmitted Joint Underwater Vehicle Using Compressed Air Tank

Technical Field

The present invention relates to a cavitation system of an underwater moving body moving at high speed in the water using the transcendental cavity phenomenon.

Background Art

When the speed of an underwater vehicle increases, the local pressure around the object becomes lower than the vapor pressure of the fluid, causing a cavitation that causes the fluid to vaporize. At this time, if the moving speed is further increased, the cavity grows to cover the shape of the underwater vehicle, which is called a supercavitation (Fig. 1). Since the underwater vehicle covered by the transcendental cavity has the same effect as moving in the air, the drag acting on the object is dramatically reduced (hereinafter referred to as the 'transcendental underwater vehicle' Is called). Based on these transcendental phenomena, research is being conducted on torpedoes capable of moving at speeds of over 200 knots (about 300 km / h), which can be called underwater at high speed. It is known that Russia is developing and operating transcendental torpedoes, and similar research is being carried out in Germany and the United States. However, due to the development stage of military use, only limited information is currently available. Jung. The frontal head of the transcendental joint underwater vehicle is equipped with a cavity (Cavitator) that serves to generate a cavity and grow it as a transcendental cavity (Fig. 1, Fig. 2). The shape and transcendence performance of the cavitation are the key factors that determine the design parameters of the entire underwater vehicle, and the transcendental flow analysis technology and the experiments need to be verified. Research on artificial supercavity devices to reduce frictional resistance and promote transcendental co-growth is also important. Until transcendence of the cavity occurs, the drag varies greatly depending on the frontal head shape of the underwater vehicle, and most of the drag acting on the underwater vehicle after the transcendental cavity is concentrated in the cavities. The shapes of the cavities developed so far are conical and disc types. The conical shape is advantageous in terms of resistance and linear stability (vibration force), but is limited by the shape of the body of the aquatic body located behind the cavator because of the smaller transverse cavity shape that occurs compared to the disc type. On the other hand, the disk type is disadvantageous in terms of resistance and straightness stability, but is less limited in the shape of the body of the underwater vehicle because of its larger transverse cavity shape than the cone type. On the other hand, in relation to the artificial transcendental joint device, conventionally formed a cavity by using the exhaust gas generated when the engine combustion of the underwater vehicle (Fig. 2), in this case the exhaust gas underwater The composition of the ventilation system for discharging to the frontal part of the moving body becomes very complicated, and furthermore, the characteristics of exhaust gas temperature, pressure, and components are not uniform, which makes it difficult to form a stable transcendental cavity over time.

Detailed Description of the Invention

[Technical problem]

The present invention has been proposed to solve the above problems, to provide a cavitation system of the transcendental joint underwater vehicle to form an artificial transcendental cavity by discharging the compressed air inside the compressed air tank to the front head during the launch of the underwater vehicle. To do that. Technical Solution

In order to achieve the above object, the present invention,

A conversion type cavitation device installed in the front head of the underwater vehicle and changed from a cone shape to a disk shape when the underwater vehicle is launched;

As a cavitation system of the transverse joint underwater vehicle using a compressed air tank comprising a,

A compressed air tank is connected to the rear of the converting cavitation, a compressed air moving pipe is connected to an outlet of the compressed air tank, a compressed air discharge port is connected to an end of the compressed air moving pipe, and the compressed air discharge port is a front end of the underwater moving object. Installed in the department ，

The compressed air tank discharges the compressed air stored therein to the compressed air moving tube when the underwater moving object reaches a certain speed, The compressed air moving tube supplies compressed air to the compressed air discharge port, and the compressed air discharge port discharges the compressed air to the outside of the underwater moving body to form an artificial transcendental cavity. Provides a 'cavator' system of motor vehicles. The converting cavities are provided with two or more cavitation elements, each of the cavitation element is layered in the front and rear direction at the beginning of the launch of the underwater vehicle to form a conical shape, the speed of the underwater vehicle increases Then, the front cavitation element is sequentially inserted into the rear cavitation element to sink and finally form a disc shape. The compressed air tank supplies internal compressed air to the compressed air outlet according to the change of the shape of the converting cavity, and the point of changing the shape of the converting cavity is adjusted according to the air pressure inside the compressed air tank. The larger the air pressure in the compressed air tank is, the slower the shape change point of the conversion type cavities becomes slower, and the smaller the air pressure in the compressed air tank is smaller, the faster the shape change point of the conversion type cavities is obtained. The present invention may further include a pressure sensor for measuring the air pressure inside the compressed air tank, but opens the compressed air valve when the measured air pressure exceeds the set value. Sir The compressed air tank supplies the compressed air to the compressed air outlet according to the operation of the pressure sensor and the compressed air valve, and the compressed air discharge point of the compressed air outlet is set by the pressure sensor. Actively controlled, the larger the set value, the slower the compressed air discharge point of the compressed air outlet is, and the smaller the set value, the faster the compressed air discharge point of the compressed air outlet is. The convertible cavator includes a low U cavator element, a second cavator element and a third cavator element, wherein the first cavator element, the second cavator element and The third cavitation element is layered in order from the front to the rear to form a conical shape. When the speed of the underwater moving object increases, the first cavitation element is first inserted into the second cavitation element and recessed. The first and second cavitation elements are then inserted together into the low 13 cavitation elements and recessed to form a disc shape. The first cavitation element is conical in shape. The second cavator element is a shape in which the upper end of the cone is cut off, and the first U-cavator element inserted into the first accommodation space and the first accommodation space capable of accommodating the low U-cavity element and the second accommodation cavity A first stopper is provided to hold the cavities out of the cavities. The third cavator element is a shape in which the top end of the cone is cut out and a second accommodation space capable of accommodating the second cavitation element and the second cavitation element inserted into the second accommodation space are inserted into the third accommodation space. A second stopper is provided to hold it out of the cavity element. The height of the first cavator element is less than or equal to the height of the second cavator element and the height of the second cavator element is less than or equal to the height of the third cavator element. A piston shaft facing rearward is connected to the first cavator element, and a piston is installed at an end of the piston shaft, and a cylinder facing rearward is connected to the three-cavity element, and the piston shaft is connected to the second cavitation element. And extends into the cylinder through the third cavator element, wherein the piston is moved in accordance with the movement of the piston shaft when the first cavator element or the second cavator element is recessed rearward. Ride the wall and move backwards. A first sliding element is installed at a rear end of the system 2 cavator element, and the first sliding element is pushed backward by the second cavitation element to enter the cylinder. The shape change timing of the conversion type cavator is adjusted according to the frictional force between the first sliding element and the cylinder wall surface. The compressed air tank is connected to a rear end of the cylinder, and a second sliding element is installed at an inner front end of the compressed air tank, and the second sliding element is pushed by the piston to move to the rear of the compressed air tank. A compressed air moving tube is connected to the outlet of the compressed air tank, and a compressed air valve is installed at the connection point between the compressed air tank and the compressed air moving tube, and the outlet of the compressed air tank is the initial launch of the underwater vehicle. It is blocked by the compressed air valve and is opened by being pushed to the valve moving tube behind the compressed air valve rearward when the piston or the second sliding element is moved backward. A spring is installed at an end of the compressed air valve in the valve moving tube, and the spring operates to maintain the compressed air valve blocking the outlet of the compressed air tank at the beginning of the launch of the underwater vehicle. On the other hand, if the speed of the underwater vehicle gradually increases, the distance and the point of view of the compressed air valve are adjusted according to the magnitude of its elastic force. The outlet of the compressed air tank is the compressed air at the beginning of the launch of the underwater vehicle It is closed by an air valve and opens as the pressure sensor operates while the speed of the underwater body gradually increases. The position and the number of the compressed air outlets are designed to be symmetrical in the up and down and left and right sides of the underwater vehicle. When the compressed air outlets are two or more, each of the compressed air outlets is configured to be selectively opened and closed.

To this end, the present invention,

A sub-compressed air moving tube connected to the inner space of the cylinder and the compressed air moving tube in the form of a bypass tube with respect to the compressed air moving tube;

A sub-compressed air valve installed in the sub-compressed air moving pipe, the sub-compressed air moving pipe opening and closing the sub-compressed air moving pipe according to the operation of the sub-pressure sensor;

It is electrically connected to the sub-compressed air valve, and when the measured air pressure exceeds the set value, the sub-compressed air valve is opened to open the sub-compressed air valve through the sub-compressed air moving tube. A sub pressure sensor configured to move to the compressed air moving tube;

Prepare. Advantageous Effects

According to the present invention, since the cavity is formed using the compressed air inside the compressed air tank instead of the exhaust gas of the underwater moving body, the configuration of the ventilation system for this becomes very simple, and the characteristics of the temperature, pressure, and component of the compressed air This uniformity makes it possible to form stable transcendental cavities over time. In addition, the cavator maintains a conical shape at the beginning of the launch of the underwater vehicle, reducing resistance and vibration force, and as the speed increases, the cavator sequentially changes into a disk shape, and the transcendental cavity that occurs accordingly increases. Are less restricted by the shape of the body.

【Brief Description of Drawings】

1 is a water vapor vehicle covered with a transcendental cavity.

2 is a main element technology of the transcendental joint underwater vehicle.

Figure 3 is a shape of the transcendental joint underwater moving body according to the present invention.

4 is a configuration of a conversion type cavator according to a first embodiment of the present invention.

5 is a configuration of a conversion type cavator according to a second embodiment of the present invention.

Figure 6 is a step-by-step operation of the conversion type cavator according to the first embodiment of the present invention.

7 is a step-by-step operation method of the convertible cavator according to the second embodiment of the present invention.

10: Underwater Vehicle 20: Convertible Cavitation 21: first cavator element 22: second cavator element

22a: Total space for accommodating one 22b: First stopper

23: low 13 cavitation element 23a: second receiving space

23b ： System 2 stopper 31 ： Piston shaft

32: piston 33: cylinder

40: first sliding element 50: compressed air tank

60: second sliding element 70: compressed air moving tube

71 ： Compressed air valve 72 ： Valve moving tube

80 ： compressed air outlet 90 ： pressure sensor

100 ： Sub compressed air moving tube 101 ： Sub compressed air valve

110 ：： Sub pressure sensor

[Best Mode for Implementation of the Invention]

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the present invention. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals have the same reference numerals as much as possible even if displayed on different drawings. In addition, in describing the present invention, if it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted. Figure 3 shows the shape of the transcendental joint underwater vehicle 10 according to the present invention. The frontal head of the transcendental joint underwater vehicle 10 according to the present invention is provided with a convertible cavitation 20 (FIG. 3). Convertible cavitation 20 is in contrast to the conventional conical (Cone Type) or disk-type (Disk Type) cavator, the conical or disk-type cavator is fixed in shape but does not change the Transformation cavitation (20) It is characterized by maintaining the cone shape at the beginning of the launching of the transcendental joint underwater vehicle 10 and gradually changing to a disc shape as the speed increases. The convertible cavitation 20 is provided with two or more cavitation elements for changing the shape as described above. At first, each cavitation element is layered in the front and rear directions between each other. ) Is in the shape of a cone, but gradually the front cavitation element is inserted into the rear cavitation element in sequence, and eventually the conversion type cavitation 20 is changed into a disc shape. As described above, the convertible cavitation 20 includes two or more cavitation elements for changing the shape, and the number of such cavitation elements may be designed in various ways according to the size or shape of the underwater vehicle 10. It can be. Hereinafter, the embodiments of the present invention related to the configuration and operation of the convertible cavitation 20 will be described by dividing the first embodiment and the second embodiment, and in this case, the converting cavities 20 It is assumed that the cavitation element is provided. First Embodiment (Passive) The first embodiment of the present invention is a case where the discharge of the compressed air through the compressed air outlet 80 is passive (natural) by the pressure rise of the compressed air tank 50. 4 shows the configuration of the conversion type cavitation 20 according to the first embodiment of the present invention. 6 shows a step-by-step operation of the conversion type cavitation 20 according to the first embodiment of the present invention. At first (the initial stage of the launching of the underwater vehicle 10), the conversion-type cavator 20 includes a first cavitation element 21, a second cavitation element 22, a third cavitation element 23, and the like. Three cavitation elements are layered with each other to form an overall conical shape (FIG. 6A). In this case, the low U cavitation element 21, the second cavitation element 22 and the system three cavitation element 23 are arranged in order from the front of the underwater body 10 to the rear. However, when the speed of the underwater vehicle 10 is gradually increased and a force is applied from the front of the converting cavitation 20, each cavitation element is sequentially inserted into the rear cavitation element to be recessed and finally the disc shape Is achieved. More specifically, firstly, the first cavitation element 21 is inserted into the rear second cavitation element 22 to be recessed (B of FIG. 6), and then the first cavitation element 21 is taken. And second cabinet The rotor element 22 is inserted and recessed together into the third cavitation element 23 (FIG. 6C). As a result, the conversion type cavity 20 which was initially a cone shape (A of FIG. 6) eventually turns into a disc shape (C of FIG. 6). Hereinafter, the configuration and operation method of the conversion type cavitation 20 according to the present invention will be described in detail. The first cavitation element 21 is conical. The second cavitation element 22 is a shape in which the upper end of the cone is cut out, and the center of the body has a first accommodation space 22a that can accommodate the first cavitation element 21 when it is inserted and recessed. . Since the front end of the first accommodating space 22a is open, the system one cavitation element 21 can be inserted into the system one accommodating space 22a to be recessed. However, the rear end of the first accommodation space 22a is not opened and is blocked by the first stopper 22b. The first stopper 22b corresponds to the bottom surface of the second cavitation element 22, in which the first cavitation element 21 is inserted into the low U accommodation space 22a. ) It serves to hold the product so that it does not exit. Thus, once the first cavitation element 21 is inserted into the second cavitation element 22 and recessed, the first cavitation element 21 and the second cavity are not the first cavitation element 21 alone. The data element 22 is integrally inserted together and inserted into the third cavitation element 23 to be recessed. The third cavity element 23 is shaped like the second cavity element 22 with the upper end of the cone cut out, which can accommodate the second cavity element 22 when the second cavity element 22 is inserted and recessed. The second accommodation space 23a is provided. The front end of the second accommodation space 23a is open As such, the second cavitation element 22 can be inserted into the system receiving space 23a to be recessed. However, the rear end of the system receiving space 23a is not opened and is blocked by the second stopper 23b. The system second stopper 23W corresponds to the bottom surface of the third cavitation element 23, in which the second cavitation element 22 inserted into the second accommodation space 23a is connected to the third cavitation element 23. The first cavitation element 21 and the second cavitation element 22 are inserted into the total three cavitation element 23 and are recessed. The shaped cavity 20 finally has a disc shape (Fig. 6C), in which the converting cavity 20 is ultimately disc shaped and thus has the advantages of a disc shaped cavity. The height of the cavitation element 21 is less than or equal to the height of the second cavitation element 22 and the height of the second cavitation element 22 is less than or equal to the height of the third cavitation element 23. In addition, in FIG. The relationship between the heights of the first cavator element 21, the second cavator element 22, and the third cavator element 23 is the same. If the height of the second cavitation element 23 is greater than the height of the cavitation element 22 or the third cavitation element 23 or the height of the third cavitation element 23, 20) is not desirable since it will continue to maintain some conical shape.The lower U-cavator element 21 is connected to the rearward piston shaft 31 and is The piston 32 is installed at the end of the piston shaft 31. And to the third cavitation element 23 is connected a cylinder 33 facing backwards. The piston shaft 31 extends into the cylinder 33 through the second and third cavator elements 22 and the piston 32 moves in response to the movement of the piston shaft 31. Will move backwards on the wall. In this case, the piston shaft 31 moves when the first cavitation element 21 or the second cavitation element 22 is recessed backwards (B, C of FIG. 6). On the other hand, the first sliding element 40 is installed at the rear end of the second cavitation element 22. The first sliding element 40 has a through hole in the center of the body and the piston shaft 31 passes through the through hole. In addition, the first sliding element 40 is pushed by the second cavitation element 22 into the cylinder 33 when the second cavitation element 22 is inserted into the third cavitation element 23 and recessed. (FIG. 6C). Hereinafter, the reason for having the first sliding element 40 in the present invention will be described. As the speed increases after the transcendental joint underwater vehicle 10 is launched, the converting cavitation 20 receives a resistance that prevents the movement of the underwater vehicle 10 from the front, and the force of the underwater vehicle 10 is increased. It increases in proportion to the speed. The first cavitation element 21 and the second cavitation element 22 are sequentially inserted and recessed backward by the force. At this time, depending on the frictional force between the first sliding element 40 and the wall of the cylinder 33, the point of depression of the second cavitation element 22, that is, the point of change of the shape of the conversion type cab 20 may be adjusted. All. If the frictional force between the sliding element 40 and the wall of the cylinder 33 is large, a large force is required to push the sliding element 40 into the cylinder 33, and if the frictional force is small, a relatively small force is required. I need strength. Accordingly, when the frictional force between the first sliding element 40 and the wall of the cylinder 33 is increased, the second cavitation element 22 is at the point where the speed of the underwater moving object 10 increases significantly, that is, the conversion cavitation 20. When the resistance to be applied can be recessed into the third cavator element 23 only when the resistance is large, the frictional force can be reduced so that even when the speed of the underwater vehicle 10 is not relatively high, It is possible for 22 to be recessed into the third cavitation element 23. As described above, the depression of the second cavitation element 22 is closely related to the formation of artificial supercavity as the compressed air in the compressed air tank 50 is discharged to the outside as described below. According to the frictional force between the sliding element 40 and the wall of the cylinder 33, ultimately, the timing of formation of the transcendental cavity can be controlled. The first sliding element 40 may be made of metal, rubber or other synthetic fiber material, and adjusts the friction force between the first sliding element 40 and the wall of the cylinder 33 according to the size or material of the first sliding element 40. It is possible to do In the case of the present invention, the shape change point of the conversion type cavitation 20 is basically a compression hole. The air pressure inside the tank 50 is adjusted. That is, as shown in FIG. 6, the piston 32 can move backwards only by overcoming the air pressure in the compressed air tank 50 (this is also the case for the second sliding element 60 described later). ， If the air pressure inside the compressed air tank 50 is large, the back movement time and speed of the piston 32 will be slow. On the contrary, if the air pressure inside the compressed air tank 50 is small, the rear movement of the piston 32 is as much. The view point and speed also become faster. In summary, the larger the air pressure in the compressed air tank 50, the slower the shape change point of the convertible cavities 20, and the smaller the air pressure in the compressed air tank 50, the smaller the convertible cavities ( The timing of the change of the shape of 20) is faster. However, in the present invention, the shape change of the convertible cavitation 20 is also controlled by adjusting the frictional force between the first sliding element 40 and the wall of the cylinder 33 as well as the air pressure inside the compressed air tank 50 as described above. You can adjust the view point. Meanwhile, the compressed air tank 50 is connected to the rear end of the cylinder 33, and the compressed air is stored inside the compressed air tank 50. In addition, a second sliding element 60 is installed at the inner front end of the compressed air tank 50. That is, the second sliding element 60 is installed at a position where the rear end of the cylinder 33 and the front end of the compressed air tank 50 abut. The system 2 sliding element 60 is pushed back by the piston 32 when the system 2 cavitation element 22 is inserted into the third cavitation element 23 and is recessed to ride the wall of the compressed air tank 50. (C in Fig. 6 The rear end of the compressed air tank 50 is connected to the compressed air moving pipe (70). The rear end of the compressed air tank 50 corresponds to the outlet through which the compressed air comes out, and at the initial stage (the launching point of the transversely moving underwater vehicle 10), the outlet is blocked by the compressed air valve 71. . The compressed air valve 71 is installed at the connection point between the compressed air tank 50 and the compressed air moving pipe 70, and moves along the valve moving pipe 72 connected to the rear. As described above, when the piston 32 moves backwards (B of FIG. 6) or the second sliding element 60 moves backwards (C of FIG. 6), the inside of the compressed air tank 50 (more specifically, The pressure of the two-sliding element (60) rear space is increased and the compressed air valve 71 is pushed to the rear valve moving tube (72) by the pressure. Then, the outlet of the compressed air tank 50 is opened. At this time, the compressed air exiting the outlet is moved along the compressed air moving tube 70 and finally discharged to the outside (underwater) through the compressed air outlet ₈₀ .

On the other hand, the valve 73, the spring 73 is installed at the end of the compressed air valve (71). Therefore, at the initial stage (starting time of the transcendental joint underwater vehicle 10), the compressed air valve 71 is blocked by the action of the spring 73 to block the outlet of the compressed air tank 50. In addition, if the speed of the underwater vehicle 10 is gradually increased, the degree of push-out (distance and timing) of the compressed air valve 71 can be adjusted according to the magnitude of the elastic force of the spring 73. The reason for having the compressed air outlet 80 in the present invention is artificial transcendence (Artificial To form a supercavity. Artificial transcendence cavities are in contrast to natural supercavity, and if transcendence cavities occur according to natural phenomena, artificial transcendence cavities do not leave the occurrence of transcendental cavities only to natural phenomena, but artificially manipulate them. Say that. In the case of a natural transcendental cavity, the cavity is generated when the speed of the underwater vehicle 10 is increased so that the local pressure around the object is lower than the vapor pressure of the fluid. However, in the present invention, the cavity is discharged around the object when the underwater vehicle 10 is launched. As the local pressure is immediately lowered by the air, the cavity easily occurs even in a section where the speed is lower than that of the natural transverse cavity. This means that in the case of the present invention, transcendence cavities can be formed earlier than natural transcendence cavities. In order to form the artificial transcendence cavity as described above, the compressed air discharge port 80 is installed at the front end of the transcendental cavity underwater body 10. And a compressed air moving tube 70 which is a passage for moving the compressed air of the compressed air tank 50 to the compressed air outlet 80 is provided. 4 and 6, the compressed air moving tube 70 is designed to start at the outlet of the compressed air tank 50 and bend its end toward the compressed air discharge port 80. As shown in FIG. The position and number of the compressed air outlet 80 may be variously designed according to the size or shape of the underwater vehicle 10, but the compressed air outlet 80 when considering the resistance and the linear stability of the underwater vehicle 10 The position and number of the bar is to be designed to be symmetrical up and down and left and right of the underwater vehicle (10) It is good. For reference, in the first embodiment of the present invention, a total of four compressed air outlets 80 are installed to be symmetrical in the up, down, left, and right directions. As described above, according to the present invention, since the converting cavity 20 maintains a conical shape at the beginning of the launching of the transcendental underwater vehicle 10, resistance and vibration force can be reduced as compared with the conventional disc shaped cavator ( 6A). In addition, as the speed gradually increases, the conversion type cavity 20 sequentially turns into a disc shape, and thus the transverse cavity shape generated accordingly becomes larger than the conventional cone type cavity (FIG. 6C). Because of this, the body shape of the underwater body 10 is less restricted. Second Embodiment (Active Type) The second embodiment of the present invention is a case where the discharge of the compressed air through the compressed air discharge port 80 is made active (artificial) by the operation of the pressure sensor 90. There is a fundamental difference in that the pressure sensor 90 is further configured compared to the example (FIG. 5). Hereinafter, the function and operation of the pressure sensor 90 will be mainly described, and the same content as in the first embodiment will be omitted. 5 shows a configuration of a convertible cavitation 20 according to a second embodiment of the present invention. 7 is a step of the conversion type cavitation 20 according to the second embodiment of the present invention It shows how it works. A compressed air tank 50 is connected to the rear end of the cylinder 33, and the compressed air is stored inside the compressed air tank 50 (Fig. 5). In addition, a second sliding element 60 is installed at the inner front end of the compressed air tank 50. That is, the system 2 sliding element 60 is installed in the position where the rear end of the cylinder 33 and the front end of the compressed air tank 50 abut. The second sliding element 60 is pushed by the piston 32 to move backwards on the wall of the compressed air tank 50 when the second cavity element 22 is inserted into the third cavity element 23 and is recessed. Done (C in FIG. 7). The rear end of the compressed air tank 50 is connected to the compressed air moving pipe (70). The rear end of the compressed air tank 50 corresponds to the outlet through which the compressed air comes out, and at the initial stage (the launching point of the transversely moving underwater body 10), the outlet is closed by the compressed air valve 71. . The compressed air valve 71 is installed at the connection point between the compressed air tank 50 and the compressed air moving tube 70. After the launch of the transcendental underwater moving body 10, a predetermined time passes to the operation of the pressure sensor 90. Open accordingly. That is, when the piston 32 moves backward (B of FIG. 7) or the second sliding element 60 moves backward (C of FIG. 7) as described above, the cylinder 33 or the compressed air tank 50 The internal pressure is increased, and the compressed air valve 71 is opened during the operation of the pressure sensor 90 according to the increase of the pressure. Then the outlet of the compressed air tank 50 is opened and the outlet Compressed air moves along the compressed air transfer pipe (70) and is finally discharged to the outside (underwater) through the compressed air outlet (80). In this regard, the compressed air discharge timing of the compressed air discharge port 80 is actively controlled by the set value of the pressure sensor (90). The pressure sensor 90 measures the air pressure in the compressed air tank 50 and is electrically connected to the compressed air valve 71 (FIG. 5). The pressure sensor 90 opens the compressed air valve 71 when the measured air pressure exceeds a set value so that the compressed air inside the compressed air tank 50 is discharged to the outside. Accordingly, if the set value of the pressure sensor 90 is large, the compressed air discharge point will be slow, but if the set value of the pressure sensor 90 is small, the compressed air discharge point is also faster. In summary, the larger the set value of the pressure sensor 90, the slower the compressed air discharge point of the compressed air outlet 80 is, and the smaller the set value of the pressure sensor 90 is, the more the compressed air outlet 80 is compressed. The time to release the air is faster. In order to form an artificial supercavity, the compressed air outlet 80 is installed at the front end of the transcendental cavity underwater body 10. And a compressed air moving tube 70 which is a passage for moving to the compressed air virtual air compressed air outlet 80 of the compressed air tank 50 is installed. 5 and 7, the compressed air moving tube 70 is designed to start at the outlet of the compressed air tank 50 and bend toward the compressed air discharge port 80. The position and number of the compressed air outlet 80 may vary depending on the size or shape of the underwater vehicle 10. Although it may be designed, the position and number of the compressed air outlet 80 is preferably designed to be symmetrical up and down and left and right of the underwater vehicle 10 when considering the resistance and the linear stability side of the underwater vehicle 10. For reference, in the second embodiment of the present invention, a total of four compressed air outlets 80 are installed to be symmetrical up and down and left and right, and each of the compressed air discharge ports 80 is divided into four divided compressed air moving tubes ( One-to-one connection with the end of 70). On the other hand, when there are two or more compressed air outlets 80, it is highly desirable to configure each compressed air outlet 80 to be selectively opened and closed in terms of positively affecting the stable operation of the underwater vehicle 10. Do. For example, when the compressed air outlet 80 is installed one each on the upper and lower sides and the left and right sides of the underwater vehicle 10 as in the second embodiment of the present invention, the lower one according to the operating speed of the underwater vehicle 10 Compressed air is discharged through the compressed air outlet (80) first, and then compressed air is discharged in the order of two compressed air outlets (80) at the left and right, and one compressed air outlet (80) at the top (of course, finally Compressed air will be discharged through all four compressed air outlets 80). Through this, it is possible to form a customized transcendental cavity according to the operational state of the underwater vehicle 10. To this end, the second embodiment of the present invention is provided with a sub-compressed air moving tube 100 in front of the compressed air tank 50 (Fig. 5). The sub-compressed air moving tube 100 is a tube connecting the internal space of the cylinder 33 and the compressed air moving tube 70. The sub-compressed air moving tube 100 is It is connected to the compressed air pipe (70) in the form of a bypass (by-pass) pipe. And the sub-compressed air moving tube 100 is provided with a sub-compressed air valve 101 for opening and closing the sub-compressed air moving tube 100, the sub-compressed air valve 101 is to the operation of the sub-pressure sensor (110). It is opened and closed accordingly. That is, when the piston 32 moves backwards to increase the pressure inside the cylinder 33 as shown in FIG. 7B, the sub-compressed air valve (10) operates according to the operation of the sub-pressure sensor 110 according to the increase of the pressure. 101 is opened. Then, the compressed air in the cylinder 33 is moved to the compressed air moving tube 70 along the sub-compressed air moving tube 100 and finally discharged to the outside (water) through the compressed air discharge outlet 80. In this regard, the opening and closing time of the sub-compressed air valve 101 is actively controlled by the setting value of the sub-pressure sensor 110. The sub pressure sensor 110 measures the air pressure inside the cylinder 33 and is electrically connected to the sub compressed air valve 101 (FIG. 5). When the measured air pressure exceeds the set value, the sub pressure sensor 110 opens the sub compressed air valve 101 to allow the compressed air inside the cylinder 33 to move to the compressed air moving tube 70. Therefore, if the setting value of the sub-pressure sensor 110 is large, the movement time of the compressed air will be slow, but if the setting value of the sub-pressure sensor 110 is small, the movement time of the compressed air is also faster. In summary, the larger the set value of the sub pressure sensor 110, the slower the compressed air discharge point of the compressed air outlet 80, and the smaller the set value of the sub pressure sensor 110, the smaller the pressure. The compressed air discharge point of the axial air outlet 80 is faster. In the second embodiment of the present invention, the compressed air discharge port 80 is installed one each on the upper and lower sides and the left and right sides of the underwater moving object 10, the compressed air moving pipe 70 is divided into four branches, the end of the compressed air discharge port One-to-one connection to 80. And the sub-compressed air moving pipe 100 is provided with a total of four, each of the sub-compressed air moving pipe 100 is connected in the form of a bypass pipe for the four branches of the compressed air moving pipe (70). Each of the four sub-compressed air moving pipes 100 is provided with a sub-compressed air valve 101, and each sub-compressed air valve 101 is connected to the sub-pressure sensor 110 separately. If the set value of the sub-pressure sensor 110 connected to the sub-compressed air valve 101 of the sub-compressed air moving pipe 100 directed to the lower one compressed air outlet (80) to the smallest, then the left and right 2 The set value of the sub-pressure sensor 110 connected to the sub-compressed air valve 101 of the sub-compressed air delivery pipe 100 directed to the two compressed air outlets 80 and the upper one compressed air outlet 80 in order. When it is made larger, as the operating speed increases after the launch of the water vapor vehicle 10, the compressed air is first discharged through the lower one compressed air outlet 80, and then the two left and right compressed air outlets 80, the upper one Compressed air is discharged in the order of the compressed air outlet (80), and finally the rear compressed air valve (71) is opened to open the cylinder (33) and the compressed air tank (50) through the four compressed air outlets (80). Compressed air inside Can implement a situation in which discharge to the outside. The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains various modifications, changes, and substitutions without departing from the essential characteristics of the present invention. This would be possible. Therefore, the embodiments disclosed in the present invention and the accompanying drawings are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by the embodiments and the accompanying drawings. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas falling within the scope of the present invention should be interpreted as being included in the scope of the present invention.

Industrial Applicability

According to the present invention can not only easily implement the transcendental phenomena of the water vapor movement body, but also simplify the system configuration for this, and at the same time can reduce the resistance and vibration force of the water movement body, the present invention in the field of shipbuilding and marine industry It is a technology that can be widely used to realize its practical and economic value.

Claims

[Range of request]

[Claim 1]

A conversion type cavitation device 20 installed on the frontal head of the underwater vehicle 10 and changing from a conical to a disk shape when the underwater vehicle 10 is launched;

As a cavitation system of the transcendental joint underwater vehicle using a compressed air tank comprising a,

The compressed air tank 50 is connected to the rear of the conversion type cavitation 20, the compressed air moving tube 70 is connected to the outlet of the compressed air tank 50, the compressed air moving tube 70 is compressed An air outlet 80 is connected and the compressed air outlet 80 is installed at the front end of the underwater body 10,

The compressed air tank (50) discharges the compressed air stored therein to the compressed air moving tube (70) when the water vapor moving body (10) reaches a certain speed,

The compressed air moving tube 70 supplies compressed air to the compressed air outlet 80, and the compressed air outlet 80 discharges compressed air to the outside of the underwater vehicle 10 to form an artificial transcendental cavity. Cavitation system of transcendental underwater underwater body using the compressed air tank.

[Claim 2]

The method according to claim 1,

The convertible cavitation 20 is provided with two or more cavitation elements, each of the cavitation element in the front and rear direction at the beginning of the launch of the underwater vehicle 10 Forming a conical shape in a layer, when the speed of the underwater moving object 10 increases, the front cavitation element is sequentially inserted into the rear cavitation element to sink, finally forming a disc shape.

The compressed air tank 50 supplies internal compressed air to the compressed air outlet 80 in accordance with the change of the shape of the conversion cavity 20,

Shape change time of the conversion type cavitation 20 is adjusted according to the air pressure in the compressed air tank 50, the larger the air pressure inside the compressed air tank 50, the conversion type cavitation 20 When the shape change time of the slower, the smaller the air pressure in the compressed air tank 50, the smaller the time of the shape change of the conversion type cavities 20, the transcendental hollow underwater vehicle using the compressed air tank Cavitation system.

[Claim 3]

The method according to claim 1,

A pressure sensor 90 for measuring the air pressure inside the compressed air tank 50 but opening the compressed air valve 71 when the measured air pressure exceeds a set value;

The conversion type cavitation 20 is provided with two or more cavitation elements, each of the cavitation element is formed in a conical shape in the front and rear direction at the beginning of the launching of the underwater vehicle (10) As the speed of the underwater moving object 10 increases, the front cavitation element is sequentially inserted into the rear cavitation element, which is recessed, and finally forms a disc shape. The compressed air tank 50 supplies the compressed air to the compressed air outlet 80 according to the operation of the pressure sensor 90 and the compressed air valve 71,

The compressed air discharge time of the compressed air outlet 80 is actively controlled by the set value of the pressure sensor 90. The larger the set value, the compressed air discharge point of the compressed air outlet 80 is The slower and smaller the set value, the faster the compressed air discharge point of the compressed air outlet 80 becomes faster.

[Claim 4]

The method according to claim 2 or 3,

The converting cavitation 20 is provided with a first cavator element 21, a second cavator element 22 and a total three cavitation element 23,

In the initial stage of launching the underwater vehicle 10, the first cavator element 21, the second cavator element 22 and the third cavator element 23 form a conical layer in order from the front to the rear. In shape,

When the speed of the water vapor moving body 10 increases, the first cavitation element 21 is first inserted into the second cavitation element 22 to be recessed, and then the first one cavitation element 21 and the first Cavity system of transcendental underwater moving body using a compressed air tank, characterized in that the disc shape in the end as the two cavitation element (22) is inserted into the third cavator element (23) and eventually recessed.

[Claim 5]

The method according to claim 4,

The system of the first cavitation element 21 is a conical shape of the cavitation system of the transcendental cavity using the compressed air tank, characterized in that the conical shape.

[Claim 6]

The method according to claim 4,

The second cavitation element 22 has a shape in which the upper end of the cone is cut out into the first accommodation space 22a and the first accommodation space 22a that can accommodate the first cavitation element 21. Transcendence using a compressed air tank, characterized in that it comprises a first stopper (22b) for holding the first cavitation element 21 to be inserted so as not to pass through the second cavitation element 22. Cavitation system of joint underwater vehicle.

[Claim 7]

The method according to claim 4,

The third cavitation element 23 has a shape in which the upper end of the cone is cut out and into the second accommodation space 23a and the second accommodation space 23a which can accommodate the second cavitation element 22. Transcendence using a compressed air tank, characterized in that the second stopper 23b is inserted to hold the second cavitation element 22 inserted through the third cavitation element 23 so as not to escape. Cavitation system of joint underwater vehicle.

[Claim 8]

The method according to claim 4, The height of the first cavitation element 21 is less than or equal to the height of the second cavitation element 22 and the height of the second cavitation element 22 is less than the height of the third cavator element 23. Cavity system of the transcendental hollow underwater vehicle body using a compressed air tank, characterized in that the same.

[Claim 9]

The method according to claim 4,

A piston shaft 31 facing rearward is connected to the first cavitation element 21, and a piston 32 is installed at the end of the piston shaft 31.

A cylinder 33 facing backward is connected to the third cavator element 23, and the piston shaft 31 penetrates through the second cavator element 22 and the third cavitation element 23. Extends into the cylinder (33),

The piston 32 rides on the wall of the cylinder 33 in response to the movement of the piston shaft 31 when the first cavitation element 21 or the second cavitation element 22 is recessed backwards. Cavitation system of transcendental joint underwater vehicle using a compressed air tank, characterized in that moving to the rear.

[Claim 10]

The method according to claim 9,

The system 1 sliding element 40 is installed at the rear end of the second cavator element 22, and the system 1 sliding element 40 is pushed backward by the system 2 cavator element 22 to allow the cylinder ( 33) Transcendental cavity using compressed air hank characterized by entering in Cavitation system of underwater vehicle.

[Claim 11]

The method according to claim 10,

The cavity of the transcendental cavity moving object using the compressed air tank, characterized in that the shape change timing of the conversion type cavitation 20 is adjusted according to the frictional force between the first sliding element 40 and the wall of the cylinder 33. Data system.

[Claim 12]

The method according to claim 9,

The compressed air tank 50 is connected to the rear end of the cylinder 33, and the second sliding element 60 is installed at the inner front end of the compressed air tank 50, and the second sliding element 60 ) Is the cavitation system of the transcendental cavity underwater vehicle using the compressed air tank, characterized in that the piston 32 is pushed by the rear of the compressed air tank (50).

[Claim 13]

The method according to claim 12,

A compressed air moving tube 70 is connected to the outlet of the compressed air tank 50, and a compressed air valve 71 is installed at a connection point between the compressed air tank 50 and the compressed air moving tube 70. The outlet of the compressed air tank (50) is blocked by the compressed air valve (71) at the beginning of the launching of the underwater vehicle (10), and then moves backward of the piston (32) or the second sliding element (60). The compressed air valve 71 is pushed to the valve valve tube 72 of the rear Cavitation system of the transcendental joint underwater vehicle using a compressed air tank, characterized in that while opening.

[Claim 14]

The method according to claim 13,

A spring 73 is installed at the end of the compressed air valve 71 in the valve moving tube 72, and the spring 73 is the compressed air valve 71 at the beginning of the launching of the underwater body 10. ) Is maintained to block the outlet of the compressed air tank (50), while the speed of the underwater moving object (10) is gradually increased if the compressed air valve 71 is pushed out according to the magnitude of its own elastic force Cavitation system of the transcendental joint underwater vehicle using the compressed air tank, characterized in that for adjusting the distance and the viewpoint.

[Claim 15]

The method according to claim 13,

The outlet of the compressed air tank (50) is closed by the compressed air valve (71) at the beginning of the launch of the underwater vehicle (10), but the pressure sensor (90) while the speed of the underwater vehicle (10) gradually increases. Cavitation system of the transcendental joint steam vehicle using a compressed air tank, characterized in that the opening as the operation.

[Claim 16]

The method according to claim 15,

The position and number of the compressed air outlet 80 is transcended air using the compressed air tank, characterized in that designed to be symmetrical in the up and down and left and right sides of the underwater body (10) Cavitation system of the dynamic underwater body.

[Claim 17]

The method of claim 16, wherein _.

Cavitation system of the transcendental joint underwater vehicle using the compressed air tank, characterized in that the compressed air outlet (80) is configured to be selectively opened and closed each respective compressed air outlet (80).

[Claim 18]

The method according to claim 17,

Sub-compressed air moving tube 100 connected to the internal space of the cylinder 33 and the compressed air moving tube 70 in the form of a bypass tube with respect to the compressed air moving tube 70. );

A sub-compressed air valve (101) installed in the sub-compressed air moving pipe (100), for opening and closing the sub-compressed air moving pipe (100) according to the operation of the sub-pressure sensor (110);

The sub-compressed air valve 101 is electrically connected to the sub-compressed air valve 101 and measures the air pressure inside the cylinder 33 to open the sub-compressed air valve 101 when the measured air pressure exceeds a set value. A sub-pressure sensor 110 for moving the compressed air therein to the compressed air moving tube 70 through the sub-compressed air moving tube 100;

Cavitation system of transcendental hollow underwater body using compressed air hank, characterized in that it comprises a.