阅读说明：本技术 一种适用于高速侵彻多层目标靶的分体式侵彻体 (Split type penetration body suitable for high-speed penetration of multilayer target ) 是由 周涛 吴翰林 屈可朋 郭洪福 周忠彬 于 2020-05-25 设计创作，主要内容包括：本发明提出一种适用于高速侵彻多层目标靶的分体式侵彻体,包括侵彻主体、后端盖和前导体。后端盖通过端盖螺纹与侵彻主体尾部的内螺纹配合连接；前导体通过前导体螺纹与侵彻主体的头部螺纹配合连接。本发明的分体式侵彻体高速侵彻多层硬目标靶时,一方面可以减弱侵彻主体扩孔的侵彻阻力,提升弹体的侵彻能力,同时提高弹道的稳定性；另一方面在有前导体保护时,侵彻主体的头部不会有明显的侵蚀与形变,在前导体变形破坏到一定程度时会破碎并完全脱离后,未发生明显形变的侵彻主体可以继续进行后续的侵彻,能够间接提升侵彻能力。(The invention provides a split penetration body suitable for penetrating a multilayer target at high speed, which comprises a penetration main body, a rear end cover and a front conductor. The rear end cover is in fit connection with the internal thread at the tail of the penetration main body through the end cover thread; the front conductor is in threaded fit connection with the head of the penetration main body through threads of the front conductor. When the split penetration body penetrates the multilayer hard target at high speed, on one hand, penetration resistance of a penetration main body in reaming can be weakened, penetration capability of a projectile body is improved, and stability of a trajectory is improved; on the other hand, when the front conductor is protected, the head of the penetration main body is not obviously corroded and deformed, and after the front conductor is broken and completely separated when deformed to a certain degree, the penetration main body which is not obviously deformed can continue to carry out subsequent penetration, so that the penetration capability can be indirectly improved.)

1. A split penetration body suitable for penetrating a multilayer target at a high speed is characterized by comprising a penetration main body, a rear end cover and a front conductor; wherein the content of the first and second substances,

the main body of the penetration is a steel rotational symmetric body which is connected with a cylinder with the same diameter in an oval cone shape, is internally provided with a dead end cavity and is provided with an opening on the lower surface of the cylinder; head threads are processed in the middle section of the outer surface of the oval conical part of the penetration main body and are matched and connected with the front conductor; the lowermost end of the inner cavity wall of the cylindrical part of the penetration main body is provided with internal threads which are matched and connected with the rear end cover;

the rear end cover is a variable-diameter steel cylinder with a central boss, and end cover threads are processed on the outer side surface of the central boss and are in fit connection with internal threads at the tail of the penetration main body;

the front conductor is a cylinder which is in conical connection and has the same diameter, a blind end cavity is arranged in the front conductor, a rotational symmetric body with an opening on the lower surface of the cylinder is arranged, and front conductor threads are machined on the lowest end of the inner cavity wall of the cylindrical part of the front conductor and are in matched connection with the head threads of the penetration main body.

2. The split penetration body according to claim 1, wherein the penetration body has a ratio of the height of the oval conical part to the height of the cylindrical part of (0.65-0.7): 1, the ratio of the radius of the generatrix arc of the oval conical part to the height of the oval conical part is (1.6-1.8): 1, and the ratio of the outer diameter of the cylindrical part to the height of the cylindrical part is (0.4-0.5): 1.

3. The split type penetration body of claim 1, wherein cavities communicated with each other are formed in the oval conical part and the cylindrical part of the penetration body, the cavity of the oval conical part is a circular truncated cone, the ratio of the diameter of the lower surface of the circular truncated cone to the diameter of the upper surface of the circular truncated cone is 3.5:1, and the ratio of the height of the circular truncated cone to the diameter of the lower surface of the circular truncated cone is (1.1-1.2): 1; the cavity of the cylindrical part and the cylindrical part are concentric equal-height cylindrical through cavities, the ratio of the inner diameter to the outer diameter is 0.75:1, the inner diameter of the cavity of the cylindrical part is the same as the diameter of the lower surface of the cavity of the circular truncated cone, a cylindrical platform is processed at a position of the oval conical part, which is away from the top end by a certain distance, and a head thread is processed on the side surface of the cylindrical platform; an internal thread is processed at the lowest end of the inner cavity wall of the cylindrical part.

4. The split type penetration body according to claim 3, wherein a cylindrical platform is processed at a position, which is 10-20 mm away from the top end, of the oval conical part of the penetration body, and a head thread with the length of 6-8 mm is processed on the side surface of the cylindrical platform; and an internal thread with the length of 6-8 mm is processed at the lowest end of the inner cavity wall of the cylindrical part of the penetration main body.

5. The split type penetration body of claim 1, wherein the diameter of the central boss of the rear end cover is the same as the inner diameter of the cylindrical cavity of the penetration body, end cover threads are machined downwards from the upper surface of the boss, and the ratio of the diameter of the cylinder connected with the boss to the outer diameter of the cylinder of the penetration body is about 0.8: 1.

6. The split type penetration body of claim 5, wherein an end cover thread with a length of about 5mm is processed downwards from the upper surface of the boss, and the height of a cylinder connected with the boss is 5 mm.

7. The split penetrating body of claim 1 wherein the cavity in said penetrating body contains explosives.

8. The split penetration body of claim 1, wherein the front conductor is an alloy material.

9. The split penetration body according to claim 1, wherein the ratio of the height of the conical portion to the height of the cylindrical portion of the front conductor is (2.7-2.9): 1, and the ratio of the diameter of the cone to the height of the cone is (1.6-1.8): 1; the shape of the inner cavity of the precursor is the same as or similar to the oval conical head of the penetration main body.

10. The split type penetration body according to claim 9, wherein a leading body thread with the length of 5-7 mm is processed at the lowest end of the inner cavity wall of the cylindrical part of the leading conductor.

Technical Field

The invention belongs to the technical field of kinetic energy penetration warheads, and particularly relates to a split type penetration body suitable for penetrating a multilayer target at a high speed.

Background

With the development of national defense technology, high-value military target systems are increasingly developed and solidified, and therefore higher requirements are put on conventional penetration weapons. In order to cope with the development trend, various countries develop conventional penetration bodies and research on penetration bodies with new principles is being tightened at the same time so as to meet penetration requirements of hard targets with higher speed and more layers.

Generally, the first layer of target of the multilayer hard target is firmer than other layers of targets, and after the first layer of target is penetrated, the head of the conventional integrated penetration body is easy to be asymmetrically eroded, so that the subsequent penetration capability and penetration trajectory are influenced. In order to improve the penetration capability of penetration bodies, segment construction and the like (series-connection penetration-following warhead penetration concrete target experiment research, explosion and impact, 2007, 27 vol. 4) a series-connection penetration body is reported in the literature, and consists of a preceding-stage energy-collecting charge and a following penetration body, and an explosion-forming bullet is formed by means of energy-collecting charge explosion to damage a target in advance, so that the penetration capability is improved. However, it has the following disadvantages: (1) the explosive shock wave formed after the preceding explosion can damage the penetration body and even explode the explosive; (2) the impulse generated by the direct action of the detonation shock waves and detonation products on the projectile may slow down the penetrating body and may cause the posture of the penetrating body to change, especially when the target consists of multiple targets, it may have a greater impact on the trajectory and may even cause the penetrating body to fail to hit the target during subsequent penetration. Korean crystal and the like (penetration and destruction characteristic analysis of a concrete target by a split type kinetic energy bullet, high-pressure physics report, 2016 (vol. 30, No. 5)) report a split type kinetic energy bullet in documents, which consists of a main penetration body, a buffering element, a circumferential auxiliary penetration body and the like, and the principle is that when the bullet impacts a target at a high speed, the main penetration body firstly penetrates into the target, so that a cavity and a radial crack area are formed in the target; and then, the auxiliary penetration body subjected to the high-speed centrifugal action is subjected to radial prefabricated groove decomposition, the fracture fragments carry out secondary impact on the target, and further the transverse acting range on the target is increased, but the penetration capability and penetration trajectory of the main penetration body are not improved.

Disclosure of Invention

Technical problem to be solved

The invention provides a split penetration body suitable for a high-speed penetration multi-layer target, which aims to improve penetration capability of the penetration body in penetrating the multi-layer target and ensure trajectory stability of the penetration body in penetrating the multi-layer target.

(II) technical scheme

In order to solve the technical problem, the invention provides a split penetration body suitable for penetrating a multilayer target at high speed, which comprises a penetration main body, a rear end cover and a front conductor; wherein, the main body of the penetration is a steel rotational symmetric body which is connected with a cylinder with the same diameter in an oval cone shape, is internally provided with a dead end cavity and is provided with an opening on the lower surface of the cylinder; a head thread is processed in the middle section of the outer surface of the oval conical part of the penetration main body and is matched and connected with the front guide body; the undermost end of the inner cavity wall of the cylindrical part of the penetration main body is provided with internal threads which are matched and connected with the rear end cover; the rear end cover is a variable diameter steel cylinder with a central boss, and end cover threads are processed on the outer side surface of the central boss and are matched and connected with internal threads at the tail of the penetration main body; the front conductor is a cylinder which is connected in a conical manner and has the same diameter, a blind end cavity is arranged in the front conductor, a rotational symmetric body with an opening on the lower surface of the cylinder is arranged, and a front conductor thread is processed at the lowest end of the inner cavity wall of the cylindrical part of the front conductor and is in matched connection with the head thread of the penetration main body.

Further, the ratio of the height of the oval conical part to the height of the cylindrical part of the penetration main body is (0.65-0.7): 1, the ratio of the radius of the generatrix arc of the oval conical part to the height of the oval conical part is (1.6-1.8): 1, and the ratio of the outer diameter of the cylindrical part to the height of the cylindrical part is (0.4-0.5): 1.

Furthermore, cavities communicated with each other are formed in the oval conical part and the cylindrical part of the penetration main body, the cavity of the oval conical part is a circular truncated cone, the ratio of the diameter of the lower surface of the circular truncated cone to the diameter of the upper surface of the circular truncated cone is 3.5:1, and the ratio of the height of the circular truncated cone to the diameter of the lower surface of the circular truncated cone is (1.1-1.2): 1; the cavity of the cylindrical part and the cylindrical part are concentric equal-height cylindrical through cavities, the ratio of the inner diameter to the outer diameter is 0.75:1, the inner diameter of the cavity of the cylindrical part is the same as the diameter of the lower surface of the cavity of the circular truncated cone, a cylindrical platform is processed at a position of the oval conical part, which is away from the top end by a certain distance, and a head thread is processed on the side surface of the cylindrical platform; an internal thread is processed at the lowest end of the inner cavity wall of the cylindrical part.

Further, a cylindrical platform is processed at a position, which is 10-20 mm away from the top end, of the oval conical part of the penetration main body, and a head thread with the length of 6-8 mm is processed on the side face of the cylindrical platform; an internal thread with the length of 6-8 mm is processed at the lowest end of the inner cavity wall of the cylindrical part of the penetration main body.

Furthermore, the diameter of a boss in the center of the rear end cover is the same as the inner diameter of a cylindrical cavity of the penetration main body, end cover threads are machined downwards from the upper surface of the boss, and the ratio of the diameter of a cylinder connected with the boss to the outer diameter of the cylinder of the penetration main body is about 0.8: 1.

Furthermore, an end cover thread with the length of about 5mm is processed downwards from the upper surface of the boss, and the height of a cylinder connected with the boss is 5 mm.

Furthermore, the cavity in the penetration body is filled with explosive.

Further, the front conductor is made of alloy materials.

Further, the ratio of the height of the conical part of the leader to the height of the cylindrical part is (2.7-2.9): 1, and the ratio of the diameter of the cone to the height of the cone is (1.6-1.8): 1; the shape of the inner cavity of the precursor is the same as or similar to the oval conical head of the penetration main body.

Furthermore, a front conductor thread with the length of 5-7 mm is machined at the lowest end of the inner cavity wall of the cylindrical part of the front conductor.

(III) advantageous effects

The invention provides a split penetration body suitable for penetrating a multilayer target at high speed, which comprises a penetration main body, a rear end cover and a front conductor. The rear end cover is in fit connection with the internal thread at the tail of the penetration main body through the end cover thread; the front conductor is in threaded fit connection with the head of the penetration main body through threads of the front conductor. When the split penetration body penetrates the multilayer hard target at high speed, on one hand, penetration resistance of a penetration main body in reaming can be weakened, penetration capability of a projectile body is improved, and stability of a trajectory is improved; on the other hand, when the front conductor is protected, the head of the penetration main body is not obviously corroded and deformed, and after the front conductor is broken and completely separated when deformed to a certain degree, the penetration main body which is not obviously deformed can continue to carry out subsequent penetration, so that the penetration capability can be indirectly improved.

The technical effects of the invention are embodied in the following two aspects:

1) the front conductor is made of heavy metal, so that the target can be pre-damaged, the penetration resistance of the main penetration body is reduced, and the penetration capability of the main penetration body is improved;

2) the front conductor is connected with the main penetration body through threads, impact energy is absorbed through deformation and breakage of the front conductor, the structural integrity of the main penetration body is improved, and the penetration trajectory of the main penetration body is ensured.

Drawings

FIG. 1 is a schematic structural diagram of a split type penetration body according to an embodiment of the invention;

FIG. 2 is a schematic structural diagram of a main implementation of the present invention;

FIG. 3 is a schematic structural view of a rear end cap according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of a front conductor structure according to an embodiment of the present invention.

Detailed Description

In order to make the objects, contents and advantages of the present invention clearer, the following detailed description of the embodiments of the present invention will be made in conjunction with the accompanying drawings and examples.

The embodiment provides a split penetration body suitable for penetrating a multi-layer target at high speed, which is structurally shown in fig. 1 and comprises a penetration main body 2, a rear end cover 3 and a front guide body 1.

As shown in figure 2, the penetration main body 2 is a steel rotational symmetric body which is connected with a cylinder with the same diameter in an oval cone manner, is internally provided with a dead end cavity and is provided with an opening on the lower surface of the cylinder. In this example, the height of the oval conical part of the penetration main body 2 is 65mm, the height of the cylindrical part is 95mm, the radius of the generatrix arc of the oval conical part is 115mm, the outer diameters of the oval conical part and the cylindrical part are both 45mm, and the generatrix of the oval conical part is tangent to the generatrix of the cylindrical part at the position where the oval conical part and the cylindrical part are in connection transition. Cavities communicated with the oval conical part and the cylindrical part of the penetration main body 2 are respectively arranged, the cavity of the oval conical part is a circular truncated cone, the diameter of the upper surface of the circular truncated cone is 10mm, the diameter of the lower surface of the circular truncated cone is the same as that of the circular cylindrical through cavity, and the height of the circular truncated cone is 40 mm; the cavity of the cylindrical part and the cylindrical part are concentric equal-height cylindrical through cavities, and the inner diameter is 35 mm; a cylindrical platform is arranged at the part, which is in the shape of an oval cone, of about 10-18 mm away from the top end, a head thread 2-1 is machined on the side face of the cylinder, and in the embodiment, the diameter of the head thread 2-1 is 26mm, and the length of the head thread is 6 mm; an internal thread 2-2 is processed at the lowest end of the inner cavity wall of the cylindrical part, and the length of the internal thread 2-2 is 8 mm.

As shown in fig. 3, the rear end cap 3 is a reducing steel cylinder with a central boss, the diameter of the central boss is 35mm, the height of the central boss is 7mm, an end cap thread 3-1 with the length of 5mm is processed downwards from the upper surface of the boss, the diameter of the cylinder connected with the boss is 40mm, and the height of the cylinder is 5 mm. The cavity in the penetration main body 2 can be filled with explosive or not. The rear end cap 3 is mounted on the internal thread 2-2 of the penetration body 2.

As shown in fig. 4, the front conductor 1 is a cone-shaped cylinder with the same diameter, a blind end cavity is arranged in the cylinder, and a rotational symmetric body with an opening on the lower surface of the cylinder is made of a common alloy or a combination of materials, and in this example, alloy steel 35CrMnSiA is used. The height of the conical part of the front conductor 1 is 19mm, the height of the cylindrical part is 7mm, and the outer diameters of the cone and the cylinder are 32 mm; a blind end cavity is arranged in the front conductor 1, the cavity of the cylindrical part is a concentric cylindrical through cavity, the inner diameter of the cavity is 26mm in the example, the cavity of the conical part is a circular truncated cone, the diameter of the upper surface of the circular truncated cone is 10mm, the diameter of the lower surface of the circular truncated cone is the same as that of the cylindrical through cavity, the height of the circular truncated cone is 9mm, and the upper surface and the lower surface of the circular truncated cone are in circular arc transition with the radius of 6 mm; the lowest end of the inner cavity wall of the cylindrical part of the front conductor 1 is provided with a front conductor thread 1-1 with the length of 5mm, and the front conductor 1 is arranged on the head thread 2-1.

The use method and the working principle of the split penetration body are as follows:

firstly, filling the explosive to be used into a cavity of the penetration main body 2, or not filling the explosive;

secondly, the rear end cover 3 is matched with the internal thread 2-2, and the rear end cover 3 is arranged at the tail part of the penetration main body 2;

third, the front conductor 1 is fitted with the head thread 2-1, and the front conductor 1 is mounted on the head of the penetration body 2.

When the split penetration body penetrates through a multi-layer hard target at high speed, the front conductor 1 performs pre-destruction on the target, the penetration body 2 penetrates through the target along with penetration, the materials of the front conductor 1 are different, the embodied structural responses are also different, the material used in the embodiment is 35CrMnSiA, and the front conductor 1 has certain plastic deformation and can absorb partial energy; the pre-damage of the front conductor 1 to the target weakens the penetration resistance of the penetration main body 2 in reaming, improves the penetration capability of the projectile body, and simultaneously improves the stability of the trajectory; when the front conductor 1 is used for protection, the head of the penetration main body 2 cannot be obviously corroded and deformed, the penetration main body 2 which is not obviously deformed can continue to carry out subsequent penetration after the front conductor 1 is broken and completely separated when deformed and damaged to a certain degree, and the penetration capability is indirectly improved.

The split penetration body suitable for the high-speed penetration multi-layer target can improve penetration capability and trajectory stability of a projectile body. Through the experiment that the split penetration body and the conventional integrated penetration body penetrate three layers of steel targets obliquely at the speed of 400m/s and the attack angle of 15 degrees, the pitch angle deflection of each layer of target plate of the integrated penetration body is respectively 8 degrees, 13 degrees and 20 degrees after the penetration is finished, and the pitch angle deflection of the split penetration body is respectively 5 degrees, 9 degrees and 13 degrees; the residual speed of the integrated penetration body after three layers of steel targets are penetrated is about 124m/s, and the residual speed of the split penetration body is about 157 m/s. Comparing the pitch angle deflection and the residual speed, the pitch angle deflection of the split penetration body is only 60% -70% of that of the integrated penetration body, the residual speed is about 26% more than that of the integrated penetration body, and therefore the penetration capability and ballistic stability of the high-speed penetration multilayer target can be remarkably improved by the split penetration body.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.