Anti-ceramic composite armored layered multi-core bullet

Abstract

The invention discloses an anti-ceramic composite armored layered multi-core bullet, and belongs to the technical field of armor-penetrating bullets, the anti-ceramic composite armored layered multi-core bullet comprises an armor and a bullet core, the armor wraps the rear part and the outer side of the bullet core, the bullet core is composed of an inner bullet core, a middle bullet core and an outer bullet core, and the bullet core adopts a radial layered coaxial structure; the outer bullet core wraps the outer side and the bottom of the middle bullet core, and the middle bullet core wraps the outer side of the inner bullet core. According to the anti-ceramic composite armor layered multi-core bullet, the bullet core is of a radial layered coaxial structure of the inner bullet core, the middle bullet core and the outer bullet core, reasonable material selection is adopted, and the bullet core is matched with the armor wrapping the rear portion and the outer side of the bullet core, so that the ceramic layer of the ceramic composite armor is effectively broken; the continuous penetration capacity of the bullet core is guaranteed, a large number of fragments are generated after the bullet core penetrates through the armor, and the damage effect on a target behind the target is remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of armor-piercing bullets, in particular to a layered multi-core bullet against ceramic composite armor. BACKGROUND

[0002] In the field of modern military conflicts and security, the rapid development of armored protection technology puts forward more stringent performance requirements for anti-armor ammunition. Ceramic composite armor, as a new type of high-efficiency protective equipment, is composed of ceramic layer, back plate and adhesive layer. It can greatly absorb and disperse the impact energy of the projectile by virtue of the high hardness and high compressive strength of the ceramic material combined with the toughness support of the back plate, so it shows strong resistance to the fragments generated by traditional bullets and cannonballs.

[0003] Traditional anti-armor bullets, such as ordinary steel core bullets and lead core bullets, generally have the problem of single core material and simple structure, which makes it difficult for them to effectively break through the ceramic composite armor. When such bullets hit the ceramic composite armor, the ceramic layer will be broken and consume a lot of energy, but the traditional core cannot effectively break the ceramic layer due to its insufficient hardness, resulting in a serious lack of penetration depth. Even if the bullet uses hard alloy as the core, although the hardness has been improved to a certain extent, it can break the ceramic layer to a certain extent, but due to the brittleness of hard alloy, the core is easily broken under the action of the huge impact force at the moment of impact, and its penetration ability will also be greatly reduced.

[0004] Therefore, there is an urgent need for a new anti-armor bullet that can effectively break through the protection of ceramic composite armor and maintain stable penetration performance. SUMMARY

[0005] The purpose of the present application is to provide a layered multi-core bullet against ceramic composite armor, which adopts a radial layered coaxial structure of inner core, middle core and outer core for the core, and reasonable material selection. The inner core is made of ceramic material, which can break the ceramic layer of the ceramic composite armor at the moment of impact due to its high hardness. The outer core is made of tungsten alloy, which can penetrate the subsequent structure of the armor due to its high density and high toughness. The middle core is made of high molecular material, which can absorb and buffer the impact force between the inner core and the outer core due to its good elasticity and buffering performance. The above structure is wrapped in the rear and outside of the core, which can effectively break the ceramic layer of the ceramic composite armor, ensure the continuous penetration ability of the core, and generate a large number of fragments after penetrating the armor, significantly improve the damage effect on the target behind.

[0006] In order to achieve the above object, the application provides a kind of anti-ceramic composite armor layered multi-core bullet, including shell and bullet core, the shell is wrapped in the rear and outside of the bullet core, the bullet core is composed of inner bullet core, middle bullet core and outer bullet core, the bullet core adopts radial layered coaxial structure, the outer bullet core is wrapped in the rear and outside of the middle bullet core, the middle bullet core wraps the outside of the inner bullet core, the inner bullet core is ceramic material, the middle bullet core is high polymer material, and the material of the outer bullet core is tungsten alloy.

[0007] Preferably, the material of the shell is brass.

[0008] Preferably, the front end surface of the inner bullet core is located at the tip of the bullet.

[0009] Preferably, the ceramic material is one of alumina ceramic, silicon carbide ceramic and silicon nitride ceramic.

[0010] Preferably, the front end surface of the middle bullet core is located behind the front end surface of the inner bullet core, and the front end surface of the outer bullet core is located behind the front end surface of the middle bullet core.

[0011] Preferably, the front end surface of the inner bullet core is one of arc shape and conical shape.

[0012] Preferably, the outer bullet core is a cylindrical structure.

[0013] Preferably, the middle bullet core is a cylindrical shell structure.

[0014] Preferably, the high polymer material is one of polyethylene and nylon.

[0015] Preferably, the composition of the tungsten alloy is tungsten, nickel and iron.

[0016] Therefore, the application adopts the above-mentioned anti-ceramic composite armor layered multi-core bullet, through the radial layered coaxial structure of the inner bullet core, the middle bullet core and the outer bullet core of the bullet core, and reasonable material selection, the inner bullet core is made of ceramic material, which can destroy the ceramic layer of the ceramic composite armor in the impact moment, the outer bullet core is made of tungsten alloy, which can realize the main penetration of the armor subsequent structure by high density and high toughness, the middle bullet core is made of high polymer material, which can absorb and buffer the collision force between the inner bullet core and the outer bullet core by good elasticity and buffering performance, and the above structure is wrapped in the rear and outside of the bullet core, which can effectively break the ceramic layer of the ceramic composite armor, ensure the continuous penetration ability of the bullet core, and generate a large number of fragments after penetrating the armor, which can significantly improve the damage effect on the target behind the target.

[0017] The technical solutions of the application will be further described in detail below with reference to the drawings and examples. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a cross-sectional view of an embodiment of a layered multi-core bullet of the anti-ceramic composite armor of the present application; Figure 2 is a structural schematic diagram of an embodiment of the anti-ceramic composite armor layered multi-core bullet of the present application.

[0019] Reference signs 1, being shell; 2, outer core; 3, middle core; 4, inner core. DETAILED DESCRIPTION

[0020] The technical solutions of the present application are further described below by means of the accompanying drawings and examples.

[0021] Unless otherwise defined, the technical terms or scientific terms used in the present application shall be understood as the usual meanings understood by those skilled in the art to which the present application belongs. The terms "first", "second", and similar terms used in the present application do not represent any order, number, or importance, but are only used to distinguish different components. The terms "include" or "contain" and similar terms mean that the elements or objects appearing before the terms encompass the elements or objects listed after the terms and their equivalents, and do not exclude other elements or objects. The terms "connect" or "connected" and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms "up", "down", "left", "right", and the like are only used to represent relative positional relationships, and when the absolute positions of the described objects change, the relative positional relationships may also change accordingly.

[0022] Example 1 The present application provides an anti-ceramic composite armor layered multi-core bullet, which has a structure as shown in Figure 1 , Figure 2 , comprising a being shell 1 and a core, the being shell 1 being wrapped around the rear and outer side of the core, the core having a radial layered coaxial structure, the core being composed of an inner core 4, a middle core 3, and an outer core 2, the outer core 2 being wrapped around the bottom and outer side of the middle core 3, and the middle core 3 being wrapped around the outer side of the inner core 4.

[0023] The material of the being shell 1 is brass, and in this embodiment, the thickness is 0.5-1.2 mm. The being shell 1 plays a protective and sealing role for the core, including the outer core 2, the middle core 3, and the inner core 4, reduces the wear of the gun barrel, and at the same time, ensures the stability of the aerodynamic performance of the bullet during flight, reduces the influence of air resistance on the flight trajectory of the bullet, and ensures the firing performance and shooting accuracy of the bullet.

[0024] The inner core 4 is made of ceramic material. In this embodiment, the ceramic material is one of alumina ceramic, silicon carbide ceramic and silicon nitride ceramic. The silicon carbide ceramic has a hardness not less than 2800HV, high wear resistance and impact resistance, and can effectively cope with a relatively thick ceramic layer. The alumina ceramic has a hardness not less than 1800HV, and relatively low cost, and is suitable for resisting a medium thickness ceramic armor. The silicon nitride ceramic has a fracture toughness not less than 7MPa·m1 / 2, good thermal shock resistance and toughness, and is not easy to break itself during impact.

[0025] When the bullet impacts the target plate, the front end of the inner core 4 first contacts the surface of the target plate. The ceramic material has high strength and high hardness, and can concentrate a large amount of kinetic energy at the contact point at the moment of impact, thereby destroying the ceramic plate of the ceramic composite armor and creating favorable conditions for the subsequent penetration of the armor by the middle core 3 and the outer core 2.

[0026] In this embodiment, the diameter of the inner core 4 is 2-4mm, and the front end surface of the inner core 4 is one of arc-shaped and conical. The curvature radius of the arc-shaped front end surface is 1-3mm, and the taper angle of the conical front end surface is 30°-60°. This structure further increases the pressure when the inner core 4 contacts the target plate, enhances the damage effect on the ceramic plate, and improves the aerodynamic shape of the entire projectile.

[0027] The outer core 2 is tungsten alloy, which is used to penetrate the subsequent back plate, internal components and other structures of the armor after penetrating the ceramic plate. The tungsten alloy has high density, high strength and high toughness, and can maintain the integrity of its structure during high-speed flight and impact, and further penetrate the armor by virtue of its large kinetic energy.

[0028] In this embodiment, the mass fraction of tungsten in the tungsten alloy is 90%-95%, and the main components other than tungsten are nickel and iron, with the mass fraction of nickel being 3%-5% and the mass fraction of iron being 2%-5%. Nickel can improve the sintering performance and toughness of the tungsten alloy, and iron can improve the processing performance of the alloy. The tungsten alloy with this component ratio has the best comprehensive mechanical properties.

[0029] In this embodiment, the outer core 2 has a cylindrical structure with a wall thickness of 1-2mm. This thickness can ensure that the outer core 2 has sufficient mass and kinetic energy to effectively penetrate other structures of the armor after penetrating the ceramic layer, and can effectively break and generate a large number of fragments after penetrating the armor.

[0030] ​The middle core 3 is made of a high polymer material, which connects the inner core 4 and the outer core 2. In this embodiment, the high polymer material is one of polyethylene and nylon, and the middle core 3 is a cylindrical shell structure with a shell thickness of 0.5-1.5 mm. If the thickness is too small, it cannot effectively buffer and expand. If the thickness is too large, it will occupy too much space, affecting the effective thickness of the inner core 4 and the outer core 2.

[0031] The high polymer material has good elasticity and buffering performance. On the one hand, it can absorb and buffer the collision force between the inner core 4 and the outer core 2 during the impact of the bullet on the target plate and the penetration process, avoiding the direct rigid contact between the two, which can cause the tungsten alloy core to break prematurely, ensuring the penetration ability of the outer core 2. On the other hand, after the bullet penetrates the target plate, the middle core 3 is compressed and deformed during the penetration process, and after it is released from the constraint of the target plate, it will expand elastically, thereby imparting a radial expansion force to the tungsten alloy core, causing the outer core 2 to break and produce a large number of fragments with high kinetic energy. These fragments can form a wide killing area in the space behind the target, improving the damage effect on targets such as living forces, electronic equipment, and mechanical structures.

[0032] The operation mode of the anti-ceramic composite armor layered multi-core bullet described in this embodiment is as follows: After the anti-ceramic composite armor layered multi-core bullet is fired, it flies at high speed under the push of the gunpowder gas. When the bullet hits the ceramic composite armor, the front end of the inner core 4 first contacts the surface of the target plate, concentrating a large amount of kinetic energy at the contact point, thereby effectively breaking the ceramic layer of the ceramic composite armor and opening a path for subsequent penetration.

[0033] During the impact and penetration process, the middle core 3 absorbs and buffers the collision force between the inner core 4 and the outer core 2, avoiding direct rigid contact between the two, which can cause the outer core 2 to break prematurely, ensuring the structural integrity and sustained penetration ability of the outer core 2 after penetrating the ceramic layer.

[0034] After penetrating the ceramic layer, the outer core 2 begins to mainly penetrate the subsequent structure of the armor due to its high density and high toughness.

[0035] When the bullet penetrates the target plate, the compression of the middle core 3 during the penetration process disappears, and the compression deformation caused by the compression causes the middle core 3 to expand elastically. This expansion imparts a radial expansion force to the outer core 2, and the cylindrical structure of the outer core 2 breaks under the action of this radial force, producing a large number of fragments with high kinetic energy. These fragments spread in the space behind the target and effectively damage a wide area. Therefore, the application adopts the above-mentioned anti-ceramic composite armor layered multi-core bullet, through the radial layered coaxial structure of the inner bullet core, the middle bullet core and the outer bullet core, and the reasonable material selection, the inner bullet core is selected from ceramic material, the ceramic layer of the ceramic composite armor is damaged at the moment of impact by using the high hardness of the inner bullet core, the outer bullet core is made of tungsten alloy, the subsequent structure of the armor is mainly penetrated by virtue of the high density and high toughness of the outer bullet core, the middle bullet core is made of high polymer material, the collision force between the inner bullet core and the outer bullet core is absorbed and buffered by the good elasticity and buffering performance of the middle bullet core, the above structure is matched with the armor wrapped in the rear and the outer side of the bullet core, the ceramic layer of the ceramic composite armor is effectively broken, the continuous penetration ability of the bullet core is ensured, a large number of fragments are generated after penetrating the armor, and the damage effect on the target rear target is significantly improved.

[0036] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application but not to limit it, although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can still be modified or replaced by the equivalent, and these modifications or equivalent replacements cannot make the modified technical solutions deviate from the spirit and scope of the technical solutions of the present application.

Claims

1. A reverse-ceramic composite armor layered multi-core bullet, characterized by: The bullet comprises a shell and a core, the shell is wrapped on the rear and outside of the core, the core is composed of an inner core, a middle core and an outer core, the core adopts a radial layered coaxial structure, the outer core is wrapped on the rear and outside of the middle core, the middle core is wrapped on the outside of the inner core, the inner core is made of ceramic material, the middle core is made of polymer material, and the outer core is made of tungsten alloy.

2. A reverse-ceramic composite armor layered multi-core bullet according to claim 1, characterized in that: The shell is made of brass.

3. A reverse-ceramic composite armor layered multi-core bullet according to claim 1, characterized in that: The front end surface of the inner core is located at the bullet tip.

4. A reverse-ceramic composite armor layered multi-core bullet according to claim 1, characterized in that: The ceramic material is one of alumina ceramic, silicon carbide ceramic and silicon nitride ceramic.

5. A reverse-ceramic composite armor layered multi-core bullet according to claim 3, characterized in that: The front end surface of the middle core is located behind the front end surface of the inner core, and the front end surface of the outer core is located behind the front end surface of the middle core.

6. A reverse-ceramic composite armor layered multi-core bullet according to claim 1, characterized in that: The front end surface of the inner core is one of arc-shaped and conical.

7. A reverse-ceramic composite armor layered multi-core bullet according to claim 1, characterized in that: The tungsten alloy is composed of tungsten, nickel and iron.

8. A reverse-ceramic composite armor layered multi-core bullet according to claim 1, characterized in that: The outer core is in a cylindrical structure.

9. The anti-ceramic composite armor layered multi-core bullet of claim 1, wherein: The polymer material is one of polyethylene and nylon.

10. The anti-ceramic composite armor layered multi-core bullet of claim 1, wherein: The middle core is in a cylindrical shell structure.

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