KR102108713B1 - A projectile for generating natural supercavitation for projectile diameter. - Google Patents

Abstract

The present invention relates to a projectile for generating a natural supercavitation matching the diameter of the projectile, and more specifically, to a projectile for generating a natural supercavitation matching the diameter of the projectile, which can effectively generate a natural supercavitation capable of adapting to the diameter of all projectiles, have a pressure center adjacent to a center of gravity for guaranteeing the forward-moving properties after incidence, and include a front end fluid flowing unit which is to control the angle of an air inducing groove and the center of gravity of the projectile for reducing a tail slap, and to be located on a rear side of the pressure center. The front end fluid flowing unit includes: a pressure offset plate in a disk shape with a certain diameter, which is corresponding to the diameter of the projectile invading into the medium by reducing the resistant force (pressure) generated in contact with the medium at the moment when the projectile comes in contact with the medium on the far-front end portion of the projectile; and a cone which is formed on the center, can easily penetrate into the medium, disperses a high pressure, and has a certain R. A natural supercavitation is generated through a secondary conical angle which is located at L/8-L/4 of the length of the projectile to form a certain angle such that a fluid in a fast flow maintains the natural supercavitation without stopping the same to increase the width of the natural supercavitation. Accordingly, the generation of the natural supercavitation, which can adapt to the diameter of all projectiles, is effective, the forward-moving properties are guaranteed after the incidence, the operation properties are excellent, and the mass-production can be maximized thanks to economical manufacturing methods.

Description

A projectile for generating natural supercavitation for projectile diameter.}

The present invention relates to a projectile generating a natural super-cavitation suitable for the diameter of the projectile, and to a projectile of a mechanism for generating a natural super-cavitation according to the diameter and speed of the projectile.

Conventionally, high-speed and fast projectiles are used to generate natural super-cavitation. In order to change the state of the fluid at a low pressure generated when the projectile enters the ultra-high speed, the tip point is very narrow, and it generates natural super-cavitation only with the width and angle of the tip point. Disadvantages) is very small. To pass through such a natural super-cavitation tunnel, the projectile must have a very small diameter.

However, in order to increase the diameter of the projectile, a large diameter is used at the tip point. In this case, a large amount of energy is consumed from the time of incidence, so that the effect of natural super cavitation is not obtained.

In addition, the conventional projectile has a limitation in that the center of gravity is located at the rear of the projectile, such that the tail portion of the rear of the projectile, such as a tail slap, touches the wall of the cavity and the projectile can no longer advance.

The present invention relates to a projectile of a mechanism that prevents tail slap while generating natural supercavitation suitable for the diameter of the projectile, which is a limitation of the conventional projectiles as described above.

[Advanced technical literature]

[Patent Document]

RU 2316 718 C1

US 8,082,851 B2

US 2010/0126372 A1

US 8,973,504 B2

KR1020160145967 A1

Applying a second angle so that the width of the tunnel of the natural super-cavitation suitable for the various diameters of the projectiles is formed to form the natural super-cavitation tunnel width larger than the diameter of the projectile, and to maximize the initial contact surface to ensure the projectability of the projectile after entering Reduce the energy loss so that the projectile's pressure center and center of gravity are close together.

In addition, it is for a projectile of a mechanism that adjusts the center of gravity and pressure of the projectile to attenuate the tail slap, and allows the tip fluid flow to optimally generate natural supercavitation to the projectile diameter.

(D/3

~ D/2

)각도와 (D/4~D/8)/10 직경의 원추뿔(12);로 구성하는 선단유체흐름부(10)와For the projectile of the above-described mechanism, the pressure in the form of a disc of a certain diameter (D / 4 to D / 8) at L / 8 to L / 3 of the projectile length L from the upper end point 100A of the projectile 1 Offset plate (11); And at the tip of the pressure offset plate (11) R

(D / 3

~ D / 2

) Conical cone (12) of angle and (D / 4 ~ D / 8) / 10 diameter; and the tip fluid flow portion 10 consisting of

원추각(20);을 구비한다.A constant angle R2 from the end of the diameter of the pressure offset plate 11 to increase the width of the natural super-cavitation while maintaining the natural super-cavitation without breaking the fluid in a fast flow through the tip fluid flow section 10

Cone angle (20); is provided.

One or two or more dampening jaws (13) in the size of ((D / 4 to D / 5) / 12 to (D / 4 to D / 5) / 15) at the end of the diameter of the pressure offset plate 11 ).

An air induction groove (30) to stabilize the flight by uniformly discharging compressed gas at the moment the projectile is fired to attenuate flight stability of the projectile and attenuate the vortex generated in the anthrax during flight; It further includes features.

It is effective to generate a cavity that can be adapted to the diameter of all projectiles, and it has the advantage of maximizing mass production through economical manufacturing and excellent operability by ensuring advancing after entering.

1 is an explanatory diagram of a mechanism in which the cavity of the present invention is generated
Figure 2-A is a side sectional view of the projectile of the present invention
Figure 2-B is a side view of a conventional projectile
3 is a perspective view of partial elements constituting the projectile of the present invention
Figure 4 is a process diagram illustrating the assembly of the projectile components of the present invention
5 is a view showing an embodiment constituting the cone angle of the present invention
6-A is a simulation result showing an embodiment in which the air film of the air and the diluted fluid 100B is broken by adjusting the cone angle of the present invention.
6-B is a simulation result showing an embodiment in which an air film of air and diluted fluid (100B) is formed and proceeds by adjusting the cone angle of the present invention.
Figure 7-A is a photograph showing a state in which the cavity is broken according to the cone angle as a real shot of an embodiment of the present invention
7-B is a photograph showing a state in which a cavity is formed according to a cone angle as an actual shot of an embodiment of the present invention and proceeds
8-Aa / b is a view showing a description of the occurrence of a tail slap in a conventional projectile.
8-B is a view showing a description of a tail slap (Tail slap) of the projectile of the present invention is attenuated

Hereinafter, the configuration and operation of the present invention will be described in more detail with reference to the accompanying drawings showing preferred embodiments.

 As shown in FIG. 2B, a bullet that advances in water by generating a conventional natural super-cavitation (hereinafter referred to as underwater coal) uses the same flat plate as in the front end portion 100, so that the diameter of the bullet must be configured to be very small, so that the natural super-cavitation You can proceed without hitting the bullet in the tunnel. Particularly, since a slight yaw angle is formed by the wing portion of the rear side, tail traps in which the rear side hits the tunnel wall are generated very frequently, thereby limiting the effect as a bullet.

In the case of the conventional bullet, the resistance of the conventional bullet is transmitted to the medium at the moment when it penetrates the medium, and there is not only a problem from incidence, but even when it enters, it penetrates the energy early and does not penetrate long depths. The reality is that there are also technical limitations.

The present invention improves the problems of the conventional bullets as described above, and enters while preserving energy so as to allow continuous penetration as well as penetration into the medium so that it can be used for the gun (gun) heat using the existing bullets. , It is for the projectile that the natural super-cavitation can be generated to fit the diameter of the projectile and the center of gravity has been moved to the front of the projectile to increase the permeability to ensure that it is in flight and stabilizes at the moment of initial incidence.

As shown in FIG. 1, in order to generate a mechanism for generating a natural super-cavitation suitable for a projectile diameter, the tip fluid flow portion 10 of a certain type is L / 8 to L / of the projectile length L from the upper end point 100A. 3, the pressure canceling plate 11 in the form of a disk having a certain diameter (D / 4 to D / 8) is configured, and the resistance (pressure) of contact with the medium at the moment when the projectile contacts the medium at the uppermost end of the projectile (1) ) So that natural super-cavitation occurs at a large angle to attenuate). In order to extend the subsequent natural super-cavitation, the flow of the fast flow fluid is maintained at the end of the pressure offset plate 11 at an R1 angle so that the natural super-cavitation is not broken.

In the upper center portion of the pressure offset plate 11, a cone cone of R ° (D / 3 to D / 2) angle and (D / 4 to D / 8) / 10 diameter dispersing high pressure from the medium in contact with the initial ( By constructing 12), the resistance is further reduced.

의 원추각(20)를 형성하여 빠른 흐름의 유체가 자연 슈퍼케비테이션이 끊어지지 않고 유지하도록 한다.In addition, a constant angle R2 from the diameter end of the pressure offset plate 11 to further increase the initial generated tunnel width of the natural supercavitation through the cone angle 20 as shown in FIG. 1.

By forming the conical angle of 20, the fluid in the fast flow maintains the natural super-cavitation without breaking.

In conventional projectiles, reducing the initial contact pressure as much as possible reduces the initial pressure, and energy loss is greatly reduced when advancing into the medium, which can lead to a large performance increase.

In the present invention, while further reducing the diameter of the pressure offset plate 11 as described above, by providing an attenuation jaw that can maintain the low pressure of the natural super-cavitation proceeding backward, it was possible to penetrate the medium while saving more energy.

These results showed better results compared to the conventional projectiles as the experimental results shown in FIGS. 6 and 7.

Figures 6-A and 7-A are the results of shooting a conventional underwater grenade, and Figures 6-B and 7-B are the results for the projectile of the present invention.

1 or 2 in the size of ((D / 4 ~ D / 5) / 12 ~ (D / 4 ~ D / 5) / 15) at the end of the diameter of the pressure offset plate 11 as in FIG. It further includes features constituting the attenuation jaw 13 above.

1 and 3, the projectile of the present invention forms a constant air guide groove in the anthrax portion.

All underwater bombs are fired in the air and fired in a manner that is incident on a medium such as water, so that there is no yaw due to the yaw angle at the initial incident. However, the conventional projectile has considerable yoga, and thus serves only as a underwater munition.

The projectile of the present invention is provided with an air guide groove (30) for stabilizing the flight by attenuating the vortex generated in the anthrax during flight stability and flight stability of the projectile by uniformly discharging compressed gas at the moment the projectile is projected into the anthrax. . The air induction groove as described above is rotated even in a medium such as water to further increase the tunnel of the natural super-cavitation at the anthrax, thereby reducing the occurrence of tail slap.

As described above, the construction of a projectile of a mechanism that generates natural supercavitation as in the present invention will be described with reference to FIG. 3.

There is a center of gravity (CG) of the projectile 1 between L / 4 to L / 2 based on a certain length (L), the upper end point (100A) of the projectile (1) of a certain type, and the upper point of the projectile (1) ( The air induction groove 30 is formed within a certain angle between 100A) and 6L / 8 to 7L / 8,

The tip fluid flow portion 10 is provided with one or more between the projectile top point (100A) ~ L / 4,

The tip fluid flow portion 10 has a diameter (D) / 4 ~ diameter (D) / 8 disk-shaped pressure offset plate 11 of the projectile; and the center of the pressure offset plate 11 penetrates the medium Easy,

Consisting cone (12) of (D / 4 ~ D / 8) / 10 diameter of R (D / 3 ~ D / 2) dispersing high pressure; constitutes the front end 100 of the projectile, and the front end is non-metal Alternatively, by constructing a protruding portion to be coupled to the inner end of the metal material and the outer end of the non-metallic or metal material, enter the groove to be inserted into the inner end of the non-metallic or metallic material, and separate the caulking (F) together with the outer end of the non-metallic or metallic material as shown in FIG. do.

Figure 5 is an embodiment showing the results of compression using the outer mold through the caulking as described above.

In addition, as shown in 4, the air guide groove in the anodized portion is generated by applying pressure in the following mold during the caulking process. Through this process, the projectile (1) is the pressure center (CP) and the center of gravity (CG) is a straight line (C), the projectile is discharged evenly to the outer circumferential surface of the projectile at the moment when it leaves the gun (gun) heat.

As shown in FIG. 3, the front end of the projectile is divided into a front end 100 of the projectile and a rear end 200 of the projectile, and the front end of the projectile is a non-metallic or metallic material having a higher specific gravity than the rear end of the projectile, and a protrusion coupled to the rear end of the projectile by caulking Constituting (101), the rear end of the projectile in the form of a jacket with a non-metallic or metallic inner end 201 and a non-metallic or metallic outer end 202 having a specific gravity lower than that of the projectile, the front end of the projectile is the rear end of the projectile By caulking the groove 203 or the outer circumferential surface 205 of the rear end of the projectile to insert the projection 101 to engage with the projectile to form a fixed coupling.

The present invention as described above generates natural super-cavitation through a secondary cone angle that increases the width of the natural super-cavitation while maintaining a fast flow of fluid without breaking the natural super-cavitation.

Due to this, it is effective to generate natural super-cavitation that can be adapted to the diameter of all projectiles, and it has the advantage of maximizing mass production with economical manufacturing and excellent operability by ensuring advancement after entering.

* Tail slap: As shown in Fig. 8-A-b, the rear part of the projectile hits the tunnel wall of the natural supercade, and the entire projectile is unable to advance and turns around.

1: Projectile
10: tip fluid flow part
11: Pressure offset plate
12: cone
13: attenuation jaw
20: cone angle
30: air induction groove
100: projectile front end
101: engaging projection
200: rear end of the projectile
201: non-metal or metal interior
202: non-metallic or metallic exterior
203: groove to be inserted
205: outer circumference of the jacket
100A: upper point
100B: air and diluted fluid
100C: fast flow of fluid
100D: the outer circumferential surface where the bottom of the projectile touches the wall inside the cavity of the fluid with a tail slap
100E: The minimum angle at which the tail slap occurs due to the difference in the gap between the pressure center and the center of gravity of the projectile.
L: Projectile length
D: Projectile diameter
F: Caulking (Method of combining two or more substances by applying pressure with the same force)
CG: center of gravity

Claims (6)

In the projectile generating a natural super-cavitation to match the projectile diameter,
Disc offset pressure plate 11 of a certain diameter (D / 4 ~ D / 8) at L / 8 ~ L / 3 of the projectile length (L) from the upper end point (100A) of the projectile (1); And the pressure R at the tip of the offset plate 11

(D / 3

~ D / 2

) Conical cone (12) of an angle and (D / 4 ~ D / 8) / 10 diameter; the tip fluid flow portion 10 consisting of; Wow
A constant angle R2 from the end of the diameter of the pressure offset plate 11 to increase the width of the natural super-cavitation while maintaining the natural super-cavitation without breaking the fluid in a fast flow through the tip fluid flow portion 10

Conical angle of (20); a projectile generating a natural super-cavitation according to the diameter of the projectile characterized in that it comprises a. The method according to claim 1,
One or two or more dampening jaws (13) in the size of ((D / 4 to D / 5) / 12 to (D / 4 to D / 5) / 15) at the end of the diameter of the pressure offset plate 11 A projectile generating a natural super-cavitation suitable for the diameter of the projectile further comprising features constituting). delete delete delete delete

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