WO2016204348A1

WO2016204348A1 - Active-type cavitator system of supercavitating underwater vehicle

Info

Publication number: WO2016204348A1
Application number: PCT/KR2015/010972
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: KR101570322B1

Abstract

The present invention relates to an active-type cavitator system of a supercavitating underwater vehicle. A conversion-type cavitator is provided on the front end part of an underwater vehicle, wherein the conversion-type cavitator maintains a conical shape during the early part of a launch of the underwater vehicle, thereby reducing resistance and excitation force, and consecutively changes into a circular disk shape as speed increases. A pressure sensor measures air pressure inside a compressed air tank and is electrically connected with a compressed air valve. If the measured air pressure exceeds a predetermined value, the pressure sensor opens the compressed air valve so as to enable compressed air inside the compressed air tank to be discharged to the outside. Thus, the higher the predetermined value of the pressure sensor, the later the discharge time point of the compressed air becomes, and the lower the predetermined value of the pressure sensor, the sooner the discharge time point of the compressed air becomes.

Description

[Explanation of invention]

[Name of invention]

Active Cavitation System of Transcendence Joint Underwater Vehicle

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 decreases dramatically (hereinafter referred to as the 'underwater vehicle' using the transcendental cavity phenomenon. '). 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 superfast underwater. At present, it is known that Russia has developed and operated a transcontinental torpedo, and similar research in Germany and the United States is known for its research. 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 whole underwater vehicle, and the verification through transcendence joint flow analysis techniques and experiments is required. The importance of research on artificial supercavity devices to reduce frictional resistance and promote transcendental co-growth is also highlighted. Until transcendence of the cavity occurs, drag varies greatly depending on the shape of the frontal head of the underwater vehicle, and most of the drag acting on the transcendental epigenetic body is concentrated in the cavator. 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 shape is disadvantageous in terms of resistance and straightness stability, but is less limited by the body shape of the underwater vehicle because of the larger transverse cavity shape that occurs compared to the cone shape.

Detailed Description of the Invention

[Technical problem]

The present invention has been proposed to solve the above problems, transcendence number The objective is to provide an active cavitation system that maintains the initial cone shape of the heavy vehicle in order to reduce its resistance and vibration and to gradually change to a disk shape as the speed increases.

Technical Solution

The present invention to achieve the above object,

A conversion type cavitation device installed in the front head of the underwater vehicle and changed from a cone shape to a disc shape when the underwater vehicle is launched;一

A compressed air tank installed at the rear of the conversion type cavator and storing compressed air therein;

A pressure sensor which measures the air pressure inside the compressed air tank and opens the compressed air valve when the measured air pressure exceeds a set value; And

A compressed air outlet installed at the front end of the water vapor moving body and configured to discharge the compressed air inside the compressed air tank to the outside of the underwater water moving body to form an artificial transcendental cavity;

An active cavitation system of a transcendental joint underwater vehicle, comprising: two or more cavitation elements, each cavitation element having a layer in the front and rear direction at the beginning of the launch of the underwater vehicle; While forming the luer cone shape, when the speed of the underwater moving object increases, the front cavitation element is sequentially inserted into the rear cavitation element to sink, finally forming a disc shape.

The compressed air tank is discharged according to the operation of the pressure sensor and the compressed air valve. Supply negative compressed air to the compressed air outlet,

The compressed air discharge point of the compressed air outlet is actively controlled by the set value of the pressure sensor. The larger the set value is, the slower the compressed air discharge point of the compressed air outlet is and the smaller the set value is, the smaller the set value is. The compressed air discharge point of the compressed air discharge outlet provides an active cavitation system of the transcendental joint water vapor movement body, characterized in that faster. The converting cavitation device includes a first cavator element, a second cavator element and a third cavator element, wherein the system first cavator element, the second cavator element and The third cavator 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 cavator element is first inserted into the second cavator element to be recessed. The system forms a disc shape eventually as the first and second cavitation elements are inserted and impregnated together into the third cavator element. The first cavator element is conical in shape. The second cavator element has a shape in which the top end of the cone is cut out, and the first cavitation element which is accommodated in the first cavitation element and the first cavitation element which is inserted into the first accommodation space are the second cavities. Do not pass through the cavitation element Have a first stopper to hold it. The third cavitation element has 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 included in the system 3. 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, a piston is installed at the end of the piston shaft, and a cylinder facing rearward is connected to the third cavator 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 of the cylinder is moved in accordance with the movement of the piston shaft when the bran U cavator element or the second cavator element is recessed to the rear. Ride the wall and move backwards. A first sliding element is installed at a rear end of the second cavator element, and the first sliding element is pushed backward by the system second cavator element to be inserted into the cylinder. Going in 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 the rear end of the cylinder, and a second sliding element is installed at an inner front end of the compressed air tank, and the 12 sliding elements are pushed by the piston to move to the rear of the compressed air tank. A compressed air moving tube is connected to an outlet of the compressed air tank, and a compressed air valve is installed at a 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 steam moving body. It is closed by the compressed air valve and is opened as the pressure sensor operates while the speed of the underwater moving object is gradually increased. 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. The present invention to achieve the above object,

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 maintains the conical shape at the beginning of the launching of the transcendental underwater underwater vehicle, the resistance and vibration force can be reduced, and as the speed increases, the cavator sequentially changes into a disc shape and the transcendental cavity generated accordingly Since the shape is also large, the body shape of the underwater vehicle is less restricted.

【Brief Description of Drawings】

1 is an underwater vehicle covered with a transcendental cavity.

Figure 2 is a description of the main elements of the transcendental joint exercise body.

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 the present invention.

Figure 5 is a step-by-step operation of the convertible cavator according to the present invention.

10 ： Underwater Vehicle 20 ： Convertible Cavitation

21: first cavator element 22: second cavator element

22a ： Free space u22b ： Total 1 stopper

23: 3 cavities element 23a: second receiving space

23b ： 12 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 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, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, Detailed explanations are 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 launching the transcendental joint water vapor vehicle 10 and gradually changing to a disc shape as the speed increases. Convertible cavitation 20 is provided with two or more cavitation elements for changing the shape as described above, at first the respective cavitation element is layered in the front and rear direction between each other conversion cavitation ( 20) has a conical shape, but gradually the front cavitation element is inserted into the rear cavitation element in order to be recessed, and finally the converting cavitation 20 is changed into a disc shape. 4 shows the configuration of the convertible cavitation 20 according to the present invention. And Figure 5 shows the step-by-step operation of the convertible cavitation 20 according to the present invention. As described above, the conversion type cavitation 20 has two or more cavitation elements for changing the shape, and the number of such cavitation elements can be variously designed according to the size or shape of the underwater vehicle 10. It can be. Hereinafter, the case where the conversion type cavitation 20 includes three cavitation elements will be described as a whole in relation to the embodiment of the present invention. At first (the initial stage of the launching of the underwater vehicle 10), the conversion type cavitation machine 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 a conical shape as a whole (FIG. 5A). In this case, the first cavitation element 21, the second cavitation element 22 and the third 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. 5), and then the first cavitation element 21 And the second cavitation element 22 together are inserted into the third cavitation element 23 to be recessed (FIG. 5C). As a result, the conversion type cavity 20 which was initially a cone shape (A of FIG. 5) eventually turns into a disc shape (C of FIG. 5). Hereinafter, the configuration and steps of the conversion type cavitation 20 according to the present invention It explains in more detail how the stars work. 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 accommodation space 22a is open, the first cavitation element 21 can be inserted into the low U accommodation space 22a and 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 cavator element 21 is inserted into the first 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 cavities are not the first cavitation element 21 alone. The data element 22 is integrally inserted together and inserted into the system three-cavity element 23 to be recessed. The three-cavity element 23 has a shape in which the upper end of the cone is cut out similarly to the two-cavity element 22, which can accommodate the second cavity element 22 when it is inserted and recessed. The second accommodation space 23a is provided. Since the front end of the second accommodation space (23a) is open, the second cavitation element 22 can be inserted into the second accommodation space (23a) to be recessed. However, the rear end of the second accommodation space 23a is not opened and is blocked by the system 2 stopper 23b. The system 2 stopper 23b is attached to the bottom surface of the third cavitation element 23. This serves to hold the second cavitation element 22 inserted into the second accommodation space 23a so as not to pass through the third cavitation element 23. Therefore, when the system 1 cavator element 21 and the second cavator element 22 are inserted into the third cavator element 23 and dent, the conversion cavitation 20 has a final disc shape. (Fig. 5C). At this time, in order for the conversion type cavator 20 to be ultimately disc shaped and thus have the advantage of a disc shaped cavator, the height of the first cavitation element 21 is smaller than the height of the second cavitation element 22. Preferably, the relationship between the same and the height of the second cavitation element 22 is less than or equal to the height of the third cavitation element 23. For reference, in the embodiment of FIG. 5, the heights of the first cavator element 21, the second cavator element 22, and the third cavator element 23 all have the same relationship. If the height of the first cavator element 21 is greater than the height of the total two-cavator element 22 or the three-cavity element 23 or the height of the second cavator element 22 is greater than the third cavator element If it is larger than the height of (23), it is not preferable because the conversion-type cavitation 20 will continue to maintain a certain cone shape. Piston shaft 31 facing backward is connected to the system 1 cavitation element 21, the piston 32 is provided 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 by passing through the total 2 cavitation element 22 and the third cavitation element 23 and the piston 32 is connected to the piston shaft. In accordance with the movement of the (31), the wall of the cylinder 33 is moved to the rear. In this case, the piston shaft 31 is moved when the first cavitation element 21 or the second cavitation element 22 is recessed backwards (B, C in Fig. 5). On the other hand, the first sliding element 40 is provided at the second cavitation element 22 and the rear end. 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. 5C). 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 convertible 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. By the force, the low 11 cavitation element 21 and the second cavitation element 22 are sequentially inserted and recessed to the rear. At this time, depending on the frictional force between the first sliding element 40 and the wall of the cylinder 33, the depression time of the total 2 cavitation element 22, that is, the shape change time of the conversion type cavitation 20 can be adjusted. The first slab if the friction between the low sliding element 40 and the wall of the cylinder 33 is large. A large force is required for the guiding element 40 to be pushed into the cylinder 33, and a relatively small force is required if the frictional force is small. Therefore, when the frictional force between the system 1 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. Although the resistance to be applied can be recessed into the third cavitation element 23 only when the resistance is large, if the frictional force is made small, the second cavitation element (even when the speed of the underwater vehicle 10 is not relatively high) 22 it is possible to be recessed into the third cavitation element 23. The first sliding element 40 may be made of metal, rubber, or other synthetic fiber material, and the frictional force between the first sliding element 40 and the wall of the cylinder 33 may depend on the size or material of the first sliding element 40. It is possible to adjust the 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 second sliding element 60 is pushed back by the piston 32 when the system two-cavity element 22 is inserted into the third-cavity element 23 and recessed to ride the wall of the compressed air tank 50. (C of FIG. 5). The rear end of the compressed air tank 50 is connected to the compressed air moving pipe (70). Compressed air tank The rear end of (50) corresponds to an outlet through which compressed air comes out, and at the initial stage (at the time of launching the transversely hollow underwater vehicle 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. 5) or the second sliding element 60 moves backward (C of FIG. 5) as described above, the cylinder 33 or the compressed air tank 50 Inner pressure increases, and the compressed air valve 71 is opened when the pressure sensor 90 operates according to the increase in pressure. Then, the outlet of the compressed air tank 50 is opened. At this time, the compressed air coming out of the outlet is moved along the compressed air moving tube 70 and finally discharged to the outside (underwater) through the compressed air discharge 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. 4). 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, Pressure Sensors (90) The larger the set value of is, the slower the compressed air discharge point of the compressed air outlet 80 becomes, and the smaller the set value of the pressure sensor 90, the faster the compressed air discharge point of the compressed air outlet 80 becomes faster. . Meanwhile, the reason why the compressed air outlet 80 is provided in the present invention is to form an artificial 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 the 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 case of the present invention, it 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 5, the compressed air moving tube 70 is designed to start at the outlet of the compressed air tank 50 so that its end is bent toward the compressed air outlet 80. 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 pressure of the compressed air outlet 80 is considered when considering the resistance and the linear stability of the underwater vehicle 10. Position and number is preferably designed to be symmetrical in the vertical and horizontal and the left and right of the underwater vehicle (10). For reference, in the embodiment of the present invention, a total of four compressed air outlets 80 are installed to be symmetrical in up, down, left and right directions, and each of the compressed air outlets 80 is divided into four divided air moving tubes 70. It was connected one to one. 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 positive influence on the stable operation of the underwater vehicle 10. Do. For example, if the compressed air outlet 80 is installed one each in the upper and lower sides and the left and right sides of the water vapor movement body 10, as in the embodiment of the present invention, the lower one compression according to the operating speed of the water vehicle 10 Compressed air is discharged through the air outlet 80 first, and then compressed air is discharged in the order of the two left and right compressed air outlets 80 and the upper one compressed air outlet 80 (of course, finally, 4). Compressed air outlets 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 present invention is provided with a sub-compressed air moving tube 100 in front of the compressed air tank (50). 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 bypassed with respect to the compressed air moving tube 70. pass) connected in the form of a tube. And the sub-compressed air moving pipe 100 is provided with a sub-compressed air valve 101 for opening and closing the sub-compressed air moving pipe 100, the sub-compressed air valve 101 is the operation of the sub-pressure sensor 110 It is opened and closed according to. That is, when the piston 32 moves backwards to increase the pressure inside the cylinder 33 as shown in FIG. 5B, 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 inside 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 adjusted 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. 4). 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 will be faster. do. 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 compressed air outlet 80 The compressed air discharge time will be faster. In the embodiment of the present invention, the compressed air outlet (80) is installed one each on the upper and lower sides and left and right of the underwater moving body (10), the compressed air moving pipe 70 is divided into four branches, the end of the compressed air outlet (80) ), One to one. 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 branch pipe 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 individually connected to the sub-pressure sensor 110. 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 is made to be the smallest, then the left and right 2 The set value of the sub-pressure sensor 110 connected with 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 underwater 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 discharge port 80, and finally, the rearmost compressed air valve 71 is opened and four pressure It is possible to implement a situation in which the compressed air inside the cylinder 33 and the compressed air tank 50 are all discharged to the outside through the axial air outlet 80. 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 ( A). In addition, as the speed gradually increases, the converting cavity 20 sequentially turns into a disk shape, and thus the transverse cavity shape that occurs accordingly becomes larger than that of the existing conical cavity (the underwater vehicle due to C of FIG. 5). Less limited to the body shape of (10) The above description is merely illustrative of the technical idea of the present invention, those skilled in the art belong to the essential characteristics of the present invention Various modifications, changes, and substitutions may be made without departing from the scope of the present invention, and the embodiments and the accompanying drawings disclosed herein are not intended to limit the technical spirit of the present invention, but to explain the embodiments and the accompanying drawings. The scope of the technical idea of the present invention is not limited by the accompanying drawings. To be interpreted by the appended claims, all spirits within a scope equivalent to that halgeotyida are intended to be included in the scope of the present invention.

【Industrial Availability】

According to the present invention can easily implement the transcendental phenomena of the underwater vehicle As well as to simplify the system configuration for this and at the same time can reduce the resistance and vibration of the underwater vehicle, the present invention is a technology that can be widely used in the shipbuilding and marine industry to realize its practical and economic value.

Claims

[Range of request]

[Claim 1]

A conversion type cavitation 20 installed in the front head of the underwater vehicle 10 and changed from conical to disc-shaped when the underwater vehicle 10 is launched;

A compressed air tank (50) installed at the rear of the converting cavitation (20) and storing compressed air therein;

A pressure sensor (90) which measures the air pressure inside the compressed air tank (50) and opens the compressed air valve (71) when the measured air pressure exceeds a set value; And

A compressed air outlet (80) installed at the front end of the underwater body (10) and discharging the compressed air inside the compressed air tank (50) to the outside of the underwater body (10) to form an artificial transcendental cavity;

An active cavitation system of a transcendental joint underwater vehicle comprising: the converting cavitation 20 includes two or more cavitation elements, wherein each cavitation element is the launch of the underwater movement 10. Initially, in the form of a layer in the front-rear direction to form a conical shape, 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 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 discharge port 80 is set by the pressure sensor 90 It is actively controlled by a value. The larger the set value is, the slower the compressed air discharge point of the compressed air discharge outlet 80 is, and the smaller the set value is, the smaller the set value, the compressed air discharge point of the compressed air outlet 80 is. Active cavitation system of the transcendental joint underwater vehicle, characterized in that the faster.

[Claim 2]

The method according to claim 1,

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

In the initial stage of the firing of the steam locomotive 10, the first cavitation element 21, the low 12 cavator element 22 and the third cavator element 23 are formed in order from the front to the rear in order to conical In shape,

When the speed of the underwater vehicle 10 increases, the first cavitation element 21 is first inserted into the second cavitation element 22 to be recessed, and then the bran U cavitation element 21 and the 2. The active cavator system of the transcendental underwater moving object, characterized in that the second cavitation element (22) is inserted into the third cavitation element (23) and recessed to eventually form a disc shape.

[Claim 3]

The method according to claim 2,

Active system of the transverse joint underwater vehicle, characterized in that the system 1 cavitation element (21) is conical.

[Claim 4]

The method according to claim 2,

The second cavator element 22 is cut out of the upper end of the cone and into the first accommodation space 22a and the first accommodation space 22a that can accommodate the low U cavitation element 21. An active type of super moon joint underwater body, characterized in that it comprises a first stopper (22b) to hold the inserted first cavitation element 21 does not pass through the second cavitation element 22. Cavitation system.

[Claim 5]

The method according to claim 2,

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. Active caviar of the transcendence underwater moving body, characterized in that it has a second stopper (23W) to hold the inserted second cavitation element 22 does not pass through the system three cavitation element (23) Data system.

[Claim 6]

The method according to claim 2,

The height of the first cavity element 21 is less than or equal to the height of the second cavity element 22 and the height of the second cavity element 22 is less than the height of the third cavity element 23. Active cavitation system of the transcendental joint underwater vehicle, characterized in that or the like.

[Claim 7]

The method according to claim 2,

A piston shaft 31 facing rearward is connected to the first cavity 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 passes through the second cavator element 22 and the third cavator element 23. Extends into the cylinder (33),

The piston 32 rides on the wall of the cylinder 33 as the piston shaft 31 moves when the first cavitation element 21 or the second cavitation element 22 is recessed backwards. Active cavitation system of transcendental water vapor movement body, characterized in that moving backward.

[Claim 8]

The method according to claim 7,

The system 1 sliding element 40 is installed at the rear end of the system 2 cavator element 22, and the system 1 sliding element 40 is pushed backward by the system 2 cavator element 22 to be moved to the cylinder ( 33) Active cavitation system of transcendental underwater vehicle characterized by entering in.

[Claim 9]

The method according to claim 8,

According to the frictional force between the system 1 sliding element 40 and the wall of the cylinder 33 Active cavitation system of the transcendental joint underwater vehicle, characterized in that the shape change time of the conversion type cavitation 20 is adjusted.

[Claim 10]

The method according to claim 7,

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 C) is pushed by the piston (32) to move rearward of the compressed air tank (50) active cavitation system of the transverse joint underwater vehicle.

[Claim 11]

The method according to claim 10,

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 closed by the compressed air valve (71) at the beginning of the launch of the underwater vehicle (10), and the pressure sensor (90) while the speed of the underwater vehicle (10) is gradually increased. Active cavitation system of the transcendental underwater underwater fuselage, characterized in that the opening according to the operation).

[Claim 12]

The method according to claim 11,

The position and number of the compressed air discharge port 80 is the active type of transcendental hollow underwater vehicle, characterized in that it is designed to be symmetrical in the up and down and left and right of the underwater vehicle (10). Cavitation system.

[Claim 13]

The method according to claim 12,

When the compressed air outlet (80) is two or more, each of the compressed air outlet 80 is configured to be opened and closed selectively active cavitation system of the transcendental underwater exercise body.

[Claim 14]

The method according to claim 13,

Sub-compressed air moving pipe (100) connected to the inner space of the cylinder (33) and the compressed air moving pipe (70) in the form of a bypass (by-pass) pipe with respect to the compressed air moving pipe (70). );

A sub-compressed air valve (101) installed in the sub-compressed air moving pipe (100) and 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 inside the compressed air moving pipe 70 through the sub-compressed air moving pipe 100;

Active cavitation system of the transcendental underwater underwater vehicle, characterized in that it comprises a.