KR101174339B1 - Dual-structured sabot for launching with high velocity - Google Patents

Abstract

The present invention relates to a double structure escape avoidance for high-speed launch, high-speed, small, any shape projectiles are projected to a high speed hit the target target while safely moving without projecting back to the departure of the barrel even under high temperature / high pressure environment at high speed The purpose of this study is to secure the technology to make it possible to provide the information necessary for the research and development of weapon systems through the analysis experiment according to the high-speed collision phenomenon in the future.
To this end, the present invention is a cylindrical combination of two hemispherical outer pieces each made of a plastic-based material and formed into a symmetrical structure so as to be separated into two pieces by being separated into two pieces of air by the propulsion energy when separated from the barrel by the propulsion energy. On the inside, the inner diameter end of the outer piece has a recessed groove is formed, the outer surface of the outer escape escape groove is formed on the inner surface other than the portion where the recessed groove is formed; And a metal-based material, each having a smaller outer diameter than the outer diameter of the hemispherical outer piece so as to be supported in the outer escape shell from the barrel and detached into two pieces according to the separation of the outer escape shell from the barrel. A cylindrical shape formed by joining two hemispherical inner pieces divided into two parts, each inner piece is inserted and fixed in a recess groove formed in each of the outer pieces, and a high-density small projectile is inserted in the center of the front face of each inner piece. Inner escaped skin is formed with a fitting groove for fixing; Characterized in that consisting of.

Description

DOUBLE-STRUCTURED SABOT FOR LAUNCHING WITH HIGH VELOCITY

The present invention relates to a dual structure escape avoidance for high-speed launch, more specifically, high-density, small, arbitrary shaped projectiles can be safely moved without being projected back to the departure of the barrel even under high temperature / high pressure environment during high-speed launch It is related to the escape of the dual structure for high-speed launching by securing the technology that enables the high-speed collision to the target, thereby providing the information necessary for the research and development of the weapon system through the analysis experiment according to the high-speed collision phenomenon in the future.

In the past, the developed countries had considered the development of weapon systems to destroy the enemy important, but now they were interested in developing survival equipment to maximize the survivability of allied personnel and combat vehicles. Accordingly, countries around the world are developing Active Protection System (APS) to improve the survivability of allies and combat vehicles. The active protection system is an active destruction type that is an active countermeasure that detects and traces approaching threats such as anti-tank guided missiles (ATGMs) and anti-tank rockets (ATRs) and neutralizes them with the corresponding bullet. (Hard-Kill) and Soft-Kill, which is a passive countermeasure that detects and tracks threats while perturbing them or evading them to a safe place after smoke demolition.

As such, the more fundamental reason for developing active protection systems in countries around the world is based on the results of various combat tests. Combat test results showed that the active protection system is the only self-sustaining means of the future combat system that increases the survivability of allies against attacks of antitank missiles and antitank rockets, and increases mobility and armedness through lightweighting. As a result of these battle tests, the active defense system mounted on the tank was analyzed to increase the survivability of the tank by two to five times. As the excellent combat effect of active defense system to ensure survivability is analyzed, countries around the world have selected this technology as a core technology in the field of future combat system survivability and develop competitively.

On the other hand, in such an active protection system, as a countermeasure against an enemy threat, a debris-type response bomb that neutralizes an enemy attack due to early detonation and threat damage is mainly used. Early detonation is when a debris of a response bomb collides with a threat, causing the threat to self-destruct before it approaches its target. Threat damage is when a debris has been hit by a body, liner or gunpowder. In the case of a debris-typed bomb impacting a threat, the penetration performance of the threat can vary greatly depending on the location of each bullet (damage). Therefore, the predicted performance of the threat should be determined according to each damage location.

Therefore, in order to develop an active protection system, it is possible to predict the performance of a damaged threat through the early detonation test of a threat or the anticipated penetration performance test based on the location of the threat. A single fragment collision test was required.

For such a single debris collision test, development of a sabot, an auxiliary device capable of firing debris (launcher) at high speed, must be preceded.

In general, the term 'breakaway' refers to the propulsion energy transmitted to the projectile, as shown schematically in FIG. 1, allowing the projectile to fly out of the barrel, supporting the projectile in the barrel, and It is a kind of auxiliary device that prevents the high pressure gas obtained from the explosion of propellant from escaping the barrel and is separated by air resistance as soon as the projectile leaves the barrel.

Such breakaway is used as a key component of wing stabilized armor shells, which defeat the enemy's target by penetrating the armor of enemy tanks through high kinetic energy. Breakaway skins commonly used in wing stabilized armor shells are formed entirely of aluminum, so there is no problem in shearing stress required for firing, but there is a problem that the specific gravity is higher than that of plastics, as shown in FIG. It only has the function to stably fly large and long projectiles (length more than 0.6cm), and there is a limitation that it cannot structurally launch at high speed.

Therefore, it is necessary to use a light and air-resistant shape and material so as to allow the projectile to fly at a high speed because the test of the breakaway structure cannot conduct a test on the high speed firing of the active-destructive projectile.

In the related art, in view of such a point, a structure of the escape escape as shown in FIG. 2 has been proposed. The breakaway skin 100 as shown in FIG. 2 is a cylindrical structure formed by combining two pieces, that is, two hemispherical pieces 100a and 100b having a symmetrical structure and molded of plastic material, and each piece 100a. As shown in FIG. 3, a recess groove 111 for inserting the projectile 200 is formed at the tip of the inner diameter portion of the inner diameter portion 100b, and each piece is provided at an inner diameter portion other than the portion where the recess groove 111 is formed. In order to enhance the binding force of the concave-convex coupling portion 112 is formed in the form of threads or grooves.

In this way, a cylindrical breakaway skin 100 having a set of two pieces is inserted into a test barrel (not shown) in the form of wrapping a projectile for a firing test. Here, the 'test gun' was used as a test gun for verifying the high speed firing of the breakaway, and was referred to as a test gun, and since it refers to a real gun having a diameter of 20 mm, it is simply referred to as 'gun barrel' from now on. Here, the appearance of the breakaway 100 is configured to seal the pressure generated when firing from the barrel, and if the projectile 200 is released from the barrel after launching flight without affecting the flight of the projectile 200. It is separated into two pieces by the aerodynamic force.

Since the breakaway 100 is made of a plastic material that is relatively small in weight compared to aluminum and can be well dispersed in the air, there is no big problem in the high-speed launch test, but the projectile 200 has a high density and a size. Is smaller and has an arbitrary shape, it is not possible to apply the above-mentioned structure of escape.

That is, since the projectile 200 shown in FIG. 3 has a cylindrical diameter of approximately 11 mm or more and the area of contact with the inner diameter of the breakaway 100 is wide, the projectile is launched at high speed toward the target target by propelling energy. In the case of using a projectile of a material (for example, tungsten) having a diameter of 5 mm or less and having a density higher than that of the breakaway 100, for example, as the projectile 200, the breakthrough 100 has a low density. In the high temperature / high pressure environment generated by the propulsion energy inside the barrel, the projectile 200 cannot be pushed out of the barrel so that the projectile 200 is pushed into the breakaway 100. Moreover, when the projectile has a shape other than a cylindrical shape, it cannot be applied to the structure of the breakaway skin shown in FIG. As a result, the intended high-speed launch test cannot be performed and test data necessary for the development of the weapon system cannot be obtained.

Therefore, in order to launch a high density, small size, arbitrary shape projectile at high speed using a low density breakaway skin, improvement of the structure of the existing breakaway skin is desired.

Accordingly, the present invention has been made in view of the above-described conventional problems, and when a high density, small size, arbitrary shape projectile is fired safely at a high speed / high pressure environment without returning to the barrel, even when the projectile is released to the target target, It aims to secure the technology that enables high-speed collisions to provide the information necessary for the research and development of weapon systems through analysis experiments according to the high-speed collision phenomenon in the future.

In order to achieve the above object, the present invention is a breakaway blood separated from the projectile after guiding the projectile to the barrel and at the same time delivers the propulsion energy to the projectile to allow the projectile to fly off the barrel.

The outer piece is a cylindrical shape formed by combining two hemispherical outer pieces each made of a plastic material and divided into symmetrical structures so as to be separated into two pieces in the air when separated from the barrel by propelling energy. The inner diameter of the distal end of the concave groove is formed, the outer surface of the concave-convex coupling portion is formed on the inner surface other than the portion where the concave groove is formed; And

It is made of a metallic material and has an outer diameter smaller than the outer diameter of the hemispherical outer piece so as to be symmetrically structured so as to be supported in the outer breakaway shell from the barrel to separate from the barrel when separated from the barrel. A cylindrical shape formed by combining two divided hemispherical inner pieces, each inner piece is inserted and fixed in a recess groove formed in each of the outer pieces, and a high-density small projectile is inserted and fixed in the center of the front face of each inner piece. Inner escaped skin is formed to fit the groove;

.

Preferably, the inner breakaway shell has a structure in which a front surface of each inner piece is concavely processed so as to be separated from the projectile by air resistance.

Preferably, the density of the plastic constituting the outer peeling skin is 0.5 to 1.7 g / cm ³ , and the density of the metal constituting the inner peeling skin is 2 to 3 g / cm ³ .

Preferably, the projectile to be fitted into the fitting groove of the inner escape blood has a density of 7 ~ 20g / cm ³ , the aperture is greater than 0mm, 10mm or less.

Preferably, the projectile to be fitted into the fitting groove of the inner escape blood is ball or polyhedron.

According to the present invention, by transforming the existing single structure escape skin into a dual structure escape skin made of a heterogeneous material consisting of the inner escape skin of the metal material and the outer escape skin of the plastic material surrounding the inner escape skin, the inner escape of the metal material is a barrel. The high-density small projectile is supported so that it can safely move toward the target target without returning to the target, and when the projectile is detached from the barrel, the external escape of the plastic material can be easily dispersed in the air.

As a result, high-density small projectiles can collide with targets at high speed without any obstacles, thereby speeding up the development of future weapon systems through analysis of projectile performance, high-speed impact on targets, and prediction of damaged targets. Test data can be obtained from which

1 is a schematic view showing a structure of a general aluminum escape strip.
Figure 2 is a perspective view showing the appearance of the conventional plastic material escape peeling.
FIG. 3 is an exploded perspective view of a state in which one member of the breakaway skin shown in FIG. 2 is removed; FIG.
Figure 4 is a perspective view showing the appearance of the escape structure dual structure for high speed firing in accordance with the present invention.
Figure 5 is an exploded perspective view in a state in which one member of the high-speed launch dual structure breakaway blood removed.
Figure 6 is an assembly view of the high-speed launch dual structure breakaway in accordance with the present invention.
7 is an explanatory view of the operation of the escape structure dual structure for high speed firing according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 4 is a perspective view showing the outer appearance of the dual-structure breakaway escape for high speed firing according to the present invention, Figure 5 is an exploded perspective view in a state in which one member of the high-speed launch dual structure leaving escape according to the present invention, Figure 6 is the present invention According to the assembly of the breakaway double structure for high-speed launch according to.

4 to 6, the high-speed launch dual structure breakaway 10 according to the present invention is coupled to the outer diameter portion of the compact high-density projectile 20 to guide the projectile 20 to the barrel. At the same time, the propulsion energy is transmitted to the projectile 20 to allow the projectile 20 to fly out of the barrel and then to be separated from the projectile 20. A double structure consisting of an external breakaway shell 11 and an inner breakaway shell 12 is provided. Consists of

The outer breakaway skin 11 is formed in a cylindrical shape by combining two hemispherical outer pieces 11a and 11b formed in a symmetrical structure. As shown in FIG. 5, a hemispherical recess groove 13 is formed at the inner diameter end of the outer piece 11a, and an inner surface other than a portion where the recess groove 13 is formed has a thread or groove shape. Coupling portion 14 is formed. 5, only the outer piece 11a, which is a half-dividing member, is illustrated in FIG. 5, but the outer piece 11b, which is a symmetrical structure, also has the recessed groove 13 and the concave-convex coupling portion like the outer piece 11a. 14) is formed. In addition, the outer rear end portions of the outer pieces 11a and 11b each have an enlarged diameter portion 15 which is larger than the outer diameter of other portions so as to seal the pressure generated when the breakaway blood is fired (see FIG. 7). ).

The concave-convex coupling portion 14 serves to enhance the bonding force during the initial coupling of the outer breakaway skin 11 and to be separated into two pieces when the outer breakaway skin 11 is separated from the barrel.

The two hemispherical outer pieces 11a and 11b constituting the outer breakaway skin 11 are formed of a plastic material. This plastic material has the characteristics of being able to disperse well in the air because of its first weight is very low compared to the metal material, and secondly, it has the strength to withstand the high temperature and high pressure generated in the barrel when the propellant is burned. .

The inner breakaway shell 12 has a structure that is inserted into the outer breakaway shell 11 so as to be separated from the outside of the barrel while being moved together with the outer breakaway shell 11 in the barrel by the pressure of the propellant. Unlike 11), there is no processing on inner diameter. That is, the inner breakaway skin 12 is a cylindrical shape formed by combining two hemispherical inner pieces 12a, 12b of a predetermined length formed in a symmetrical structure similarly to the outer breakaway skin 11, and each of the inner pieces 12a and 12b are inserted into and fixed to the recessed grooves 13 formed in the respective outer pieces 11a and 11b, and the compact projectile 20 having a high density is placed in the center of the front surface of each of the inner pieces 12a and 12b. Fitting grooves 16 for fitting are formed.

The projectile 20 inserted into each of the fitting grooves 16 is fixed to the inner escape shell 12 using a viscous liquid such as grease. The projectile 20 functions as a penetrator which can penetrate by colliding with a target target such as a stationary threat or missile, and is made of a ball-type made of tungsten, but is not necessarily limited to such material and shape. For example, the shape of the projectile 20 may be formed of a polyhedron (hexahedron, octahedron, decahedron, etc.) in addition to the ball shape. This is because, since the inner escape shell 12 for safely moving the projectile 20 in the outer escape shell 11 until the barrel is detached is formed of a metallic material as described below, any projectile of any material and shape is required. It is possible. The projectile 20 in the present invention can fly at high speed if the aperture is greater than 0 mm and less than 10 mm.

As described above, the inner escape shell 12 which fixes the small dense projectile 20 having a high density in the state of being supported in the outer escape shell 11 has the projectile 20 separated from the high temperature / high pressure environment generated by the propulsion energy inside the barrel. It is made of metal material with higher density than plastic series to block back phenomenon that is pushed into the blood.

The outer diameter of the inner breakaway skin 12 should be designed in consideration of the outer breakaway skin 11 depending on the shape of the barrel. Thus, the outer diameter of the inner breakaway skin 12 (that is, the outer diameter of each hemispherical inner piece 12a, 12b constituting the inner breakaway skin 12) is possible if the outer diameter of the outer breakaway skin 11 (i.e. 11) Smaller than the hemispherical outer piece (11a, 11b) of the outer diameter), for example, about 3mm smaller to process the inside of the barrel is not damaged.

And, the length of the inner breakaway skin 12 needs to be designed in consideration of the speed of the projectile 20. This is to facilitate separation from the projectile upon departure of the escape shell from the barrel so that the inner escape 12 does not collide with the target.

In addition, the inner breakaway skin 12 has a structure having a recess 17 in which the front surfaces of the respective inner pieces 12a and 12b are recessed to be separated from the projectile 20 by air resistance. .

On the other hand, for the effect analysis of the weapon system, the density of the projectile that can hit and penetrate the target is approximately 7.0-20 g / cm ³ . If the density of the projectile 20 is less than 7.0 g / cm ³ , the target cannot be penetrated, while the density is 20 g / cm ^3. If larger, the projectile 20 cannot be flown at high speed.

In addition, as described above, the density of the inner escape shell 12 for blocking the retrograde phenomenon of the high-density small projectile 20 is approximately 2 to 3 g / cm ³ , and the outer escape shell 11 is used to minimize the weight of the escape shell. ) Density is about 0.5 to 1.7 g / cm ³ . The high-density compact projectile 20 can fire at high speed toward the target target only if it satisfies at least the above-mentioned density range condition of the escape blood.

If the density of the inner breakaway skin 12 is small, a backlash phenomenon may occur in which the projectile 20 is pushed into the breakaway skin because the projectile 20 cannot be pushed out of the barrel. On the other hand, if the density of the internal breakaway skin 12 is too large, the projectile 20 may not fly at high speed. And, in the case of the outer breakaway skin 11, if the density is too small, the high pressure of the propellant may be deformed without transferring to the inner breakaway skin 12, if the density is too large, flying the projectile 20 at high speed You can't.

In the present invention, the flight speed of the projectile 20 is approximately 900m / s to 1800m / s. However, since the maximum speed of the projectile 20 is determined according to the performance of the artillery, a flight speed of 2000 m / s or more is possible.

Referring to the operation relationship of the high-speed launch dual structure breakaway according to the present invention as described above are as follows.

As shown in Figure 7 (a), the rear end of the outer escape shell 11 surrounding the inner escape shell 12 seals the pressure generated during firing. In this state, when the high-temperature and high-pressure propulsion energy obtained from the explosion of the propellant is transmitted to the outer escape shell 11, the outer escape shell 11 moves at high speed toward the outside of the barrel 30. At this time, the outer breakaway skin 11 transmits the high pressure by the propellant to the inner breakaway skin 12, and the inner breakaway skin 12 of the metallic material is a high-density small projectile fixed to the fitting groove 16 of the tip end ( 20) and at the same time supports the gun to move safely toward the target without backing the projectile until the departure of the barrel (30).

Subsequently, when the breakaway 10 exits the barrel 30, the outer breakaway 11 and the inner breakaway 12 do not affect the flight of the projectile 20, as shown in FIG. It is separated into two pieces by aerodynamics when flying. That is, the outer breakaway skin 11 of the plastic material is easily dispersed into the air while being separated into two pieces, and thus the inner breakaway shell 12 which is simply inserted into the outer breakaway skin 11 is air into the recess 17. The resistance is separated from the projectile 20 and separated into two pieces.

As a result, only the projectile 20 collides with the target target at high speed by such separation.

As such, the high-density small projectile can collide with the target target at high speed without any obstacle, thereby speeding up the development of future weapon system through the analysis of the performance of the projectile, the high-speed impact on the target target, and the prediction of the damaged target. Test data can be obtained from which

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, Accordingly, the true scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of the same should be construed as being included in the scope of the present invention.

10: escape
11: external breakaway
11a, 11b: hemispherical outer piece
12: internal escape
12a, 12b: hemispherical inner piece
13: insertion groove
14: uneven coupling portion
15: enlarged neck
16: fitting groove
17: recess

Claims (5)

Guide the projectile 20 to the barrel 30 and at the same time delivers the propulsion energy to the projectile 20 to allow the projectile to fly off the barrel and then separated from the projectile,
Two hemispherical outer pieces 11a and 11b, each made of a plastic-based material and divided into symmetrical structures, so that they are combined in the barrel 30 and dispersed in the air when separated from the barrel 30 by the propulsion energy, and separated into two pieces. In the cylindrical shape formed by combining the concave-convex groove 13 is formed in the inner diameter end of each of the outer piece (11a, 11b), the inner surface other than the portion where the concave groove 13 is formed. External breakaway 11 is formed; And
It is made of a metallic material so as to be supported in the outer escape shell 11 until detached from the barrel 30 so as to be separated into two pieces according to the separation of the outer escape shell 11 when detached from the barrel 30, respectively. A cylindrical shape formed by combining two hemispherical inner pieces 12a and 12b having an outer diameter smaller than the outer diameters of the hemispherical outer pieces 11a and 11b and formed into a symmetrical structure. An insertion groove 16 for inserting and fixing the recessed grooves 13 formed in the outer pieces 11a and 11b and fitting the small projectile 20 of high density into the center of the front surface of each of the inner pieces 12a and 12b. Internal breakaway 12 is formed;
Breakaway dual structure for high-speed launch, characterized in that consisting of. The method of claim 1,
The inner breakaway skin 12 has a structure having a concave portion 17 in which a front surface of each of the inner pieces 12a and 12b is recessed to be separated from the projectile 20 by air resistance. Breakaway dual structure for high speed firing. The method according to claim 1 or 2,
The high speed foot, characterized in that the density of the plastic constituting the outer escape shell 11 is 0.5 ~ 1.7g / cm ³ , the density of the metal constituting the inner escape shell 12 is 2 ~ 3g / cm ³ . Use double structure breakaway. The method of claim 3,
The projectile 20 fixed to the fitting groove 16 of the inner breakaway skin 12 has a density of 7.0 to 20 g / cm ³ , and a diameter of more than 0 mm and 10 mm or less of the high-speed launching double escape structure. . The method of claim 3,
Projectile body 20 is fixed to the fitting groove (16) of the inner escape (12) is a double structure escape for high-speed launch, characterized in that the ball-type or polyhedral.

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