Modularized projectile support suitable for launching meshing type projectiles with different calibers

Abstract

The invention discloses a modular projectile support suitable for launching meshing type projectiles with different calibers, and relates to the technical field of artillery launching. The sabot main body is of a multi-petal structure, and a plurality of sets of meshing grooves capable of being embedded into the variable inner diameter ring are machined in the inner side of the sabot main body. The outer diameter of the variable-inner-diameter ring is consistent with the diameter of the groove bottom of the meshing groove in the sabot body, and the inner diameter of the variable-inner-diameter ring is adjusted according to the size of the projectile and consistent with the diameter of the groove bottom of the meshing groove in the projectile. The variable inner diameter ring and the sabot main body play a role in supporting and clamping the projectile in a chamber, so that the thrust of gunpowder gas can better act on the projectile. The sealing bowl, the filling block and the gas closing ring jointly play a role in sealing gunpowder gas. A conventional projectile support is modularized, and aiming at launching of meshing type projectiles with different calibers, the launching requirement can be met only by simply and finely adjusting the inner diameter of the variable-inner-diameter ring. The design and machining period of the sabot is remarkably shortened, the application range of the sabot is widened, and meanwhile the problem of relative sliding of a multi-petal sabot in the launching process is solved.

Description

Technical Field

[0001] The invention relates to the technical field of artillery firing, in particular to a modular cartridge case suitable for firing meshing projectiles of different calibers. Background Art

[0002] For the launch of sub-caliber rod-type tail-stabilized projectiles, the existing launch technology usually requires improving the sabot design for each projectile and performing full-process sabot processing and preparation to meet the launch requirements of sub-caliber projectiles. The improved sabot can only support the use of projectiles of a specific caliber, which limits the diversity and adaptability of the system; repeated design and processing will also waste more manpower and material resources.

[0003] 1. In the traditional mode, the launch of multi-caliber projectiles requires the processing of different sabots. On the one hand, the sabot design needs to be redesigned, and on the other hand, the complete sabot processing process needs to be repeated, resulting in long sabot design and processing cycles and poor adaptability.

[0004] 2. When a sub-caliber projectile is fired in the chamber, the multi-petal sabot structure easily causes gunpowder gas to leak out from the gaps between the multi-petal sabots, which reduces the initial velocity of firing and may also cause the sabots to separate or slide relative to each other in the chamber, affecting the normal firing of sub-caliber projectiles. It is necessary to solve the problem of gunpowder gas leaking out from the gaps between the sabot petals and the sabots separating or sliding relative to each other during firing.

[0005] Therefore, how to design a universal cartridge case that can adapt to the launch of projectiles of different calibers has become the key to improving the diversity of the launch system. Summary of the invention

[0006] The invention provides a modular cartridge case suitable for launching meshing projectiles of different calibers.

[0007] The technical solution to achieve the purpose of the present invention is: a modular cartridge case suitable for launching meshing projectiles of different calibers, comprising:

[0008] A variable inner diameter ring, a sabot body, a clamping ring, a sealing bowl, a filling block and a closed air ring, wherein the variable inner diameter ring is arranged in an engagement groove on the surface of a projectile, the sabot body is engaged and matched with the variable inner diameter ring, a windward cavity is arranged at one end of the sabot body close to the bullet, an annular groove is machined in the windward cavity for accommodating the clamping ring, a rear cavity is arranged at one end of the sabot body away from the bullet, a sealing bowl is inserted into the outer side of the rear cavity during firing, when the caliber of the projectile is smaller than the inner diameter of the sabot body, a filling block is inserted into the gap between the tail of the projectile and the sabot body, a groove is arranged on the outer side of the near tail end of the sabot body for accommodating the closed air ring.

[0009] Preferably, the support body is a body of revolution structure and is divided into at least two petals along the circumferential direction.

[0010] Preferably, the variable inner diameter ring is a replaceable part, and the inner diameter of the variable inner diameter ring is changed according to the caliber of the projectile.

[0011] Preferably, the inner side of the variable inner diameter ring is an irregular trapezoid that matches the engagement groove on the projectile.

[0012] Preferably, the variable inner diameter rings are arranged at equal intervals perpendicular to the projectile axis, and the number is not less than 2, and each variable inner diameter ring is equally divided into not less than 2 petals along the circumferential direction.

[0013] Preferably, the diameter of the gas-sealing ring is larger than the caliber of the gun / cannon so as to seal the gunpowder gas during firing.

[0014] Preferably, the side of the tight hoop ring and the air-sealing ring close to the bullet head is processed with a plurality of evenly distributed cuts.

[0015] Preferably, the filling block is equally divided into no less than two petals along the circumferential direction.

[0016] Preferably, two adjacent petals of the support body are meshed and matched with the same petal of the variable inner diameter ring, that is, the support body should be arranged alternately with the variable inner diameter ring.

[0017] Compared with the prior art, the present invention has the following significant advantages: when the same caliber gun / cannon is required to launch fin-stabilized projectiles of different calibers and sub-calibers, the present invention does not need to repeatedly perform sabot modification design and full-process processing for projectiles of different calibers, and only needs to fine-tune the local size and material of the variable inner diameter ring with a simple structure to meet the launching requirements.

[0018] The present invention is described in further detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings illustrate exemplary embodiments of the present invention and together with the description serve to explain the principles of the present invention. These drawings are included to provide a further understanding of the present invention and are incorporated in and constitute a part of this specification.

[0020] Figure 1 It is a schematic diagram of the meshing projectile structure.

[0021] Figure 2 This is a schematic diagram of the bullet support assembly.

[0022] Figure 3 Schematic diagram of the variable inner diameter ring structure.

[0023] Figure 4 It is a schematic diagram of the main structure of the cartridge case.

[0024] Figure 5 Schematic diagram of the tight ring structure.

[0025] Figure 6 Schematic diagram of the sealing bowl structure.

[0026] Figure 7 A schematic diagram of the filling block structure.

[0027] Figure 8 Schematic diagram of the closed air ring structure.

[0028] Fig. 9 It is a schematic diagram of the staggered arrangement of the variable inner diameter ring and the bullet support body. DETAILED DESCRIPTION

[0029] A method for firing meshing projectiles of different calibers (such as attached Figure 1 The invention relates to a modular new type of cartridge case (as shown in the attached Figure 2 As shown in the figure, projectiles of different calibers can be fired. Since the projectile surface is processed with meshing grooves, in order to achieve the purpose of firing projectiles of different calibers, a variable inner diameter ring with a simple structure and easy processing is added (as shown in the figure). Figure 3 As shown), make the main body of the bullet support (as shown in the attached Figure 4 The meshing groove part on the buttress body that matches the projectile is separated from the buttress body. The size of the variable inner diameter ring is fine-tuned according to projectiles of different calibers, so that the buttress body is highly compatible with multi-caliber projectiles. The bottom of the windward cavity of the buttress body close to the warhead has a groove for placing the clamp ring (as shown in the attached figure). Figure 5 In order to prevent the gunpowder gas from leaking out from between the multi-petal sabot during firing, which would reduce the firing speed and even damage the sabot structure, a sealing bowl is placed at the tail of the sabot (see attached). Figure 6 The sealing bowl can be deformed elastically to fit tightly with the sabot body. When firing small-caliber projectiles, there will be a gap between the sabot body and the tail end of the projectile, which needs to be filled with a filler block (as shown in the attached Figure 7 In addition, the outer side of the cartridge body away from the bullet head is processed with an annular groove for inserting the gas-sealing ring (as shown in the attached figure). Figure 8 During assembly, the two adjacent petals of the buttress body must be matched with the petals of the same variable inner diameter ring at the same time, that is, the buttress body should be arranged alternately with the variable inner diameter ring (as shown in the attached figure). Fig. 9 As shown), this ensures that the multi-petal support bodies do not slide relative to each other along the axis of the missile during the launch process.

[0030] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0031] Combination Figure 1 The present invention discloses a modular cartridge case suitable for launching meshing projectiles of different calibers. The surface of the projectile (1) is processed with meshing grooves, and a tail fin stabilization method is used to ensure ballistic stability. The cartridge case is composed of a variable inner diameter ring (2), a cartridge case body (3), a clamping ring (4), a sealing bowl (5), a filling block (6) and a gas-sealing ring (7).

[0032] The fin-stabilized projectile mentioned in the present invention is a sub-caliber projectile, and the surface is processed with an engagement groove. At the same time, in order to realize the launch of different calibers, a sabot is required to be supported in the chamber. The traditional sabot is modularized and divided into a variable inner diameter ring (2) and a sabot body (3). The variable inner diameter ring (2) cooperates with the engagement groove on the surface of the projectile, and the contact surface has a certain inclination angle, which is conducive to the separation of the sabot after it is discharged from the chamber. The variable inner diameter ring (2) is equally divided into no less than two petals along the circumferential direction. According to the caliber of the projectile, the inner diameter of the variable inner diameter ring (2) is adjusted accordingly to adapt it to different projectile calibers. The material can be selected from lightweight metal materials such as aluminum alloy, titanium alloy, and magnesium alloy. The sabot body (3) is a rotating body structure, which is divided into at least two petals along the circumferential direction. The shape and material of each petal are the same, and lightweight, high-strength metal materials or composite materials such as aluminum alloy, titanium alloy, and carbon fiber material can be selected. The inner diameter of the sabot body (3) can be as small as possible under the premise of meeting the strength requirement, so as to expand the applicable caliber range and achieve the purpose of lightweight. The outer side surface away from the bullet is processed with an annular groove for placing the air-closing ring (7). The tightening ring (4) is embedded in the windward cavity close to the bullet side to prevent the sabot from separating in the bore. In addition, the variable inner diameter ring also serves as the meshing teeth of the sabot, ensuring the strength of the contact part with the projectile. At this time, the sabot body can be made of lighter materials to further improve the initial launch velocity of the projectile. Before launching, the variable inner diameter ring (2) is embedded in the meshing groove of the projectile. After the sabot body (3) and the variable inner diameter ring are assembled, they are fixed with the tightening ring (4) and the air-closing ring (7). The tightening ring (4) and the air-closing ring (7) are both ring-shaped, but a notch is pre-processed on the side close to the bullet. In order to make the card petal have a good separation effect, the notch depth is 1 / 5 to 1 / 2 of the ring height. The clamp ring (4) can be made of metal materials such as copper, aluminum and titanium. The air-sealing ring (7) can be made of non-metallic materials such as polyethylene, nylon and polycarbonate. The sealing bowl (5) is made by injection molding or 3D printing. Before launching, it is assembled in the rear cavity of the cartridge case body (3) away from the warhead. It can prevent the gunpowder gas from leaking out from between the multi-petal cartridge cases during the launching process, avoid structural damage to the cartridge case, and increase the initial launch velocity. The materials are nylon, rubber and low-density polyethylene. The filling block (6) is divided into no less than two petals along the circumferential direction. When launching a small-caliber projectile, it is inserted into the gap between the projectile and the cartridge case body (3) to seal the gunpowder gas. The material can be low-density metal or non-metal.

[0033] The working principle of the present invention is:

[0034] The surface of the meshing projectile is processed with a meshing groove for matching with the cartridge. The supporting card petal is modularly processed and split into a cartridge body and a variable inner diameter ring. The purpose of launching projectiles of different calibers is achieved by changing the inner diameter of the variable inner diameter ring. The improved modular cartridge structure consists of a variable inner diameter ring (2), a cartridge body (3), a clamping ring (4), a sealing bowl (5), a filling block (6) and a closed air ring (7). During assembly, the variable inner diameter ring (2) is first installed in the meshing groove on the surface of the projectile (1). The inner side of the variable inner diameter ring is an irregular trapezoid. The A surface and the B surface have a certain angle with the axis direction of the projectile. The inclined surface can ensure the reliable separation of the cartridge after it leaves the chamber. Then the cartridge body (3) is meshed and matched with the variable inner diameter ring (2). At this time, the variable inner diameter ring acts as the meshing tooth of the cartridge, ensuring the strength of the contact part with the projectile. The cartridge body can be made of lighter materials to achieve the purpose of lightweighting and improve the initial launch velocity of the projectile. Then place the filling block (6), followed by the sealing bowl (5) and the air-sealing ring (7) in sequence, so as to seal the gunpowder gas and prevent the gunpowder gas from leaking out from between the multi-petal cartridges during the firing process, avoid structural damage to the cartridges, and increase the initial firing velocity. Finally, place the clamp ring (4) into the windward cavity of the cartridge body (3). To ensure that the sealing bowl (5) fits tightly with the cartridge, a thin layer of adhesive can be appropriately applied between the sealing bowl (5) and the cartridge. To ensure that the multi-petal cartridge bodies (3) do not separate during the firing process and do not slide relative to each other along the direction of the cartridge axis, the two adjacent cartridge bodies (3) need to match the same petal variable inner diameter ring (2) during installation, that is, the cartridge body (3) should be arranged alternately with the variable inner diameter ring (2).

[0035] The present invention discloses a modular cartridge case suitable for launching meshing projectiles of different calibers, which can support the launching of multi-caliber projectiles. The cartridge case main body adopts a multi-petal structure, and multiple groups of meshing grooves are processed on the inner side, which cooperate with the variable inner diameter ring to support and fix the projectile in the chamber. The design of the variable inner diameter ring enables the cartridge case to be flexibly adjusted according to the needs of projectiles of different calibers, adapt to the launching requirements of projectiles of different calibers, and possess modular characteristics; at the same time, there is also a meshing relationship between the variable inner diameter ring and the cartridge case main body, and the two are staggered during assembly, which can effectively prevent the separation and mutual sliding between the cartridge case main bodies. The present invention not only provides higher flexibility and adaptability for modern artillery launching technology, but also helps to reduce the dead weight of the cartridge case, and realizes a lightweight design of the cartridge case.

[0036] The embodiments are described in more detail.

[0037] Example 1

[0038] The projectile is fired by a 30mm caliber cannon, and the caliber D is 14.5mm; the variable inner diameter ring (2) is made of 2A12 aluminum alloy, and the thickness H b The inner diameter of the support body (3) is 3.5 mm and is divided into three petals. The support body (3) is made of 2A12 aluminum alloy and has an inner diameter Dd 14.5mm, divided into 3 petals; the cage ring 4 is made of copper, with a height of H j The incision depth is 2 mm, the incision depth is 1 mm, and the number of incisions is 4; the sealing bowl (5) is made of rubber 3D printing; the air-closing ring (7) is made of polyethylene, with a height H n is 6mm, the incision depth is 3mm, and the number of incisions is h n is 4; in this embodiment, the outer diameter of the projectile is consistent with the inner diameter of the cartridge body, and there is no need to add a filling block (6).

[0039] Example 2

[0040] The projectile is fired by a 30mm caliber cannon, and the caliber D is 12.7mm; the variable inner diameter ring (2) is made of titanium alloy, and the thickness H b The inner diameter of the support body (3) is 4.4 mm and is divided into two petals. The support body (3) is made of carbon fiber composite material and has an inner diameter D d The diameter of the ring is 14.5 mm and is divided into two parts. The locking ring 4 is made of 2A12 aluminum alloy and has a height of H j The incision depth is 2 mm, the incision depth is 0.5 mm, and the number of incisions is 3; the sealing bowl (5) is made of polyethylene injection molding; the filling block (6) is made of 6061 aluminum alloy, with a thickness of H t The air-sealing ring (7) is made of nylon and has a height of H n is 6mm, the incision depth h n The thickness is 2 mm and the number of cuts is 3.

[0041] It should be clear to those skilled in the art that the above embodiments are only for the purpose of clearly illustrating the present invention, and are not intended to limit the scope of the present invention. Other changes or modifications may be made based on the above disclosure, and these changes or modifications are still within the scope of the present invention.

Claims

1. A modular cartridge case suitable for firing meshing projectiles of different calibers, characterized in that: include: A variable inner diameter ring (2), a cartridge body (3), a clamping ring (4), a sealing bowl (5), a filling block (6) and a gas-blocking ring (7), wherein the variable inner diameter ring (2) is arranged in a meshing groove on the surface of a projectile (1), the cartridge body (3) is meshed with the variable inner diameter ring (2), an end of the cartridge body (3) close to the bullet head is provided with a windward cavity, an annular groove is processed in the windward cavity for accommodating the clamping ring (4), an end of the cartridge body (3) away from the bullet head is provided with a rear cavity, the sealing bowl (5) is inserted into the outer side of the rear cavity during firing, when the caliber of the projectile is smaller than the inner diameter of the cartridge body (3), the filling block (6) is inserted into the gap between the tail of the projectile (1) and the cartridge body (3), and a groove is provided on the outer side of the cartridge body (3) near the tail end for accommodating the gas-blocking ring (7).

2. The modular cartridge case for launching meshed projectiles of different calibers according to claim 1, characterized in that: The support body (3) is a rotating body structure and is divided into at least two lobes along the circumferential direction.

3. The modular cartridge case for launching meshed projectiles of different calibers according to claim 1, characterized in that: The variable inner diameter ring (2) is a replaceable part, and the inner diameter of the variable inner diameter ring (2) is changed according to the caliber of the projectile (1).

4. The modular cartridge case for launching meshed projectiles of different calibers according to claim 1, characterized in that: The inner side of the variable inner diameter ring (2) is an irregular trapezoid that matches the engagement groove on the projectile (1).

5. The modular cartridge case for launching meshed projectiles of different calibers according to claim 1, characterized in that: The variable inner diameter rings (2) are arranged at equal intervals perpendicular to the projectile axis and the number is not less than 2. Each variable inner diameter ring (2) is equally divided into not less than 2 petals along the circumferential direction.

6. The modular cartridge case for launching meshed projectiles of different calibers according to claim 1, characterized in that: The diameter of the gas-sealing ring (7) is larger than the caliber of the gun / cannon and is used to seal the gunpowder gas during firing.

7. The modular cartridge case for launching meshed projectiles of different calibers according to claim 1, characterized in that: The side of the tight hoop ring (4) and the air-sealing ring (7) close to the bullet head is processed with a plurality of evenly distributed cuts.

8. The modular cartridge case for launching meshed projectiles of different calibers according to claim 1, characterized in that: The filling block (6) is equally divided into no less than two petals along the circumferential direction.

9. The modular cartridge case for launching meshed projectiles of different calibers according to claim 1, characterized in that: Two adjacent petals of the spring support body (3) are meshed and matched with the same petal of the variable inner diameter ring (2), that is, the spring support body (3) should be arranged in a staggered manner with the variable inner diameter ring (2).

10. The modular cartridge case for launching meshed projectiles of different calibers according to claim 1, characterized in that: The variable inner diameter ring (2) is selected from any one of aluminum alloy, titanium alloy, magnesium alloy and alloy steel according to the overload size.

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