CN220729046U

CN220729046U - PELE structure

Info

Publication number: CN220729046U
Application number: CN202320378309.9U
Authority: CN
Inventors: 杨光; 胡博; 吴鹏; 朱建生; 魏沛杰; 刘永峰; 李俊; 张晓龙; 马翰宇
Original assignee: PLA Army Academy of Artillery and Air Defense
Current assignee: PLA Army Academy of Artillery and Air Defense
Priority date: 2023-03-03
Filing date: 2023-03-03
Publication date: 2024-04-05
Anticipated expiration: 2033-03-03

Abstract

The utility model discloses a PELE structure, which comprises a shell and a core wrapped in the shell, wherein the core comprises an active core and an inert core, the inert core and the active core are both arranged in the shell, the active core is made of an active material, the inert core is made of an inert material, and the density of the inert core is lower than that of the shell. In the utility model, the PELE structure can ensure the penetration capability of the projectile, but also can utilize the energy release characteristic of the active material to improve the post-target damage effect.

Description

PELE structure

Technical Field

The utility model relates to the technical field of related structures of projectile, and more particularly to a PELE structure.

Background

PELE (Penetrator with Enhanced Lateral Effect, transverse effect enhanced penetration) is a novel armor piercing warhead that utilizes the differences in the properties of the projectile shell and the core material to convert some of the axial kinetic energy into radial kinetic energy. The ammunition has good penetration capability and target post-fragment damage power, the inside of the ammunition body does not contain high-energy explosive, a fuze is not matched, and after the ammunition body penetrates through a target mainly by means of physical action, a shell is cracked to form fragments to attack the target post-target.

The conventional PELE mainly comprises a high-density shell 1 and a low-density elastic core 2, and the simplified structure is shown in fig. 1. The shell 1 is usually made of heavy metal such as tungsten or steel, and the core 2 is made of an inert material such as polyethylene material or aluminum, which has relatively weak penetration performance. However, after the conventional PELE hits the target of the target plate, the shell 1 and the core 2 penetrate the target plate at the same time, but the penetration capability of the core 2 is weak due to the low impedance, so that the core 2 is squeezed between the pit and the shell 1. The low density of the core 2 is compressed by strong impact, so that the internal pressure of the material is increased continuously, and the core 2 can generate radial acting force on the shell 1 body due to poisson effect. When the PELE projectile penetrates the target plate, the compression potential energy of the core material is fully released in the radial direction, so that the shell 1 is broken and cracked into a large number of fragments in the radial direction. A schematic diagram of a specific conventional PELE penetration principle is shown in fig. 2.

In recent years, active materials have been widely studied and used as a novel energetic material, wherein a metal/polymer mixture type active material is generally composed of two or more kinds of metal particles and fluoropolymers which have no reaction characteristics in normal state and have high activity, and the type of material is relatively insensitive in normal state, but can undergo severe chemical reaction and release a large amount of chemical energy under high strain rate loading or collision conditions.

When the active material is applied to the core 2 of a PELE, a modified PELE appears. Compared with the inert core material, the active core material can react and actively release energy when the projectile body penetrates the target plate, so that the shell 1 is broken to generate more fragments, the fragments obtain higher speed, and other targets behind the detonation target plate can be ignited, and physical and chemical double damage is caused to the targets.

However, when the modified PELE is used for penetrating the target plate, the front-end active elastic core 2 can react before the target, a product generated by the reaction acts radially on the shell, the penetration appearance of the elastomer is damaged, and finally, the speed loss and the mass loss of the shell 1 are higher than those of the traditional PELE, so that the penetration capability is inferior to that of the traditional PELE structure.

Disclosure of Invention

In order to solve the technical problems in the background technology, the utility model provides a PELE structure.

The PELE structure comprises a shell and a core wrapped in the shell, wherein the core comprises an active core and an inert core, the inert core and the active core are both arranged in the shell, the active core is made of an active material, the inert core is made of an inert material, and the density of the inert core is lower than that of the shell.

Specifically, as with the existing PELE shell structure, the shell is made of tungsten or high-density metals such as steel or tungsten alloy.

Specifically, the inert core is made of polyethylene, and of course, in some embodiments, the inert core may be made of materials such as aluminum, etc. used in the prior art.

Preferably, the active material from which the active core is made comprises aluminum and polytetrafluoroethylene.

Preferably, the active core is sleeved in the inert core.

Preferably, the active core and the inert core are coaxial.

Preferably, the outer diameter of the active core is less than half the outer diameter of the inert core and less than the outer diameter of the inert core.

Preferably, the active core is remote from the front end of the housing.

Preferably, the length of the active core is less than the length of the inert core and greater than half the length of the inert core.

In the utility model, the PELE structure can ensure penetration capability of the projectile and improve the post-target damage effect by utilizing the energy release characteristic of the active material.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

FIG. 1 is a prior art PELE structural intent;

FIG. 2 is a schematic diagram of a prior art PELE penetration;

FIG. 3 is a schematic diagram of a structure of an embodiment of the present utility model;

FIG. 4 is a schematic diagram of a second embodiment of the present utility model;

in the figure: 1. a housing; 2. a spring core; 20. an active spring core; 21. an inert spring core.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar symbols indicate like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present utility model and are not to be construed as limiting the present utility model.

It is to be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counter-clockwise," "axial," "radial," "circumferential," and the like are directional or positional relationships as indicated based on the drawings, merely to facilitate describing the utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

Example 1

The PELE structure shown in fig. 3 comprises a shell 1 and a bullet core 2 coated in the shell 1, wherein the shell 1 in the embodiment is made of tungsten alloy; the core 2 comprises an active core 20 and an inert core 21, the active core 20 and the inert core 21 form a composite core 2, the inert core 21 and the active core 20 are arranged in the shell 1, the active core 20 is made of active materials, and the active materials for making the active core 20 comprise aluminum and polytetrafluoroethylene; the inert spring core 21 is made of an inert material, and the density of the inert spring core 21 is lower than that of the shell 1;

specifically, the inert core 21 is made of polyethylene material, and the active core 20 is sleeved in the inert core 21;

preferably, the active core 20 is sleeved in the inert core 21 and is coaxial with the inert core 21, preferably, the inert core 21 is coaxial with the casing 1, the outer diameter of the active core 20 is smaller than half of the outer diameter of the inert core 21 and smaller than the outer diameter of the inert core 21, the active core 20 is far away from the front end of the casing 1 (it should be noted that, as will be understood by those skilled in the art, the front end of the casing 1 refers to the end of the casing 1 that is first contacted with the target plate when the target plate is penetrated), and the length of the active core 20 is smaller than the length of the inert core 21 and is larger than half of the length of the inert core 21.

In the PELE structure of the embodiment, when the target plate is penetrated, the radial acting force is generated on the shell 1 by utilizing the poisson effect of the polyethylene material (the inert core 21) at the front end of the core 2, so that the PELE structure of the embodiment has the same penetration capacity and perforating capacity as those of the conventional PELE. After penetrating the target board, the active core 20 at the rear end of the core 2 is burned and exploded to release energy actively, so that the shell is broken to generate more fragments and obtain higher speed, and physical and chemical double damage is caused to the target behind the target.

Example two

As shown in fig. 4, this embodiment is different from the above-described embodiment in that the active core 20 is tapered, and the outer diameter of the active core 20 gradually increases from the side near the front end of the case 1 to the side far from the front end of the case 1. The maximum outer diameter of the active core 20 is smaller than half the outer diameter of the inert core 21 and smaller than the outer diameter of the inert core 21; the arrangement of the structure ensures the speed of the shell 1 and gradually increases the speed of fragments generated by the breakage of the shell 1 from the side close to the front end to the side far away from the front end, thereby increasing the injury effect on the target behind the target.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. The PELE structure comprises a shell (1) and a core (2) coated in the shell (1), and is characterized in that the core (2) comprises an active core (20) and an inert core (21), the active core (21) and the inert core (20) are sleeved in the shell (1), the active core (20) is made of an active material, the inert core (21) is made of an inert material, and the density of the inert core (21) is lower than that of the shell (1);

the active elastic core (20) is sleeved in the inert elastic core (21);

the active elastic core (20) is conical, and the outer diameter of the active elastic core (20) gradually increases from the side close to the front end of the shell (1) to the side far away from the front end of the shell (1).

2. A PELE structure according to claim 1, characterized in that the shell (1) is made of tungsten or steel.

3. The PELE structure according to claim 1, characterized in that the inert core (21) is made of polyethylene material.

4. The PELE structure of claim 1, wherein the active material comprises aluminum and polytetrafluoroethylene.

5. The PELE structure according to claim 1, characterized in that the active core (20) and the inert core (21) are coaxial.

6. The PELE structure of claim 5, wherein the outer diameter of the active core (20) is less than half the outer diameter of the inert core (21) and less than the outer diameter of the inert core (21).

7. The PELE structure according to claim 1, characterized in that the active core (20) is remote from the front end of the outer shell (1).

8. The PELE structure of claim 7, wherein the active core (20) has a length less than the length of the inert core (21) and greater than half the length of the inert core (21).