Two-stage separation type projectile support for sub-caliber launching of unstable projectile body

Abstract

The invention discloses a two-stage separation type projectile support for sub-caliber launching of an unstable projectile body. The two-stage separation type projectile support comprises an outer projectile support body, a projectile tail structure, an inner projectile support body and the projectile body. The missile tail structure is driven to decelerate by using the backward opening resistance of the clamping petals, and the missile tail structure is separated from a flying missile body, so that the problem that the missile tail structure with larger mass cannot be separated can be solved; the inner sabot slides backwards along the axis of the projectile body under the action of air resistance in the flying process, so that the flying stability of a combination formed by the inner sabot and the projectile body is improved, target collision at a small attitude angle at a long distance can be achieved, and meanwhile, due to the fact that the flying distance is prolonged, the projectile tail structure and the projectile body are separated more thoroughly; through the arrangement of the resistance table, the inner projectile support can be separated from the projectile body before collision and can also impact the target body together with the projectile body; due to the fact that the inner projectile support can slide in the axial direction of the projectile body and is small in mass, the penetration influence of the inner projectile support on the projectile body can be ignored.

Description

Technical Field

[0001] The invention relates to the technical field of projectile launch test, and in particular to a two-stage separation type cartridge case for sub-caliber launch of an unstable projectile. Background Art

[0002] Sub-caliber launch technology is a commonly used test technology for penetration, target penetration and strong collision environments. The existing sub-caliber launch technology has the following problems when launching unstable projectiles: ① The short distance to the target makes the tail of the projectile inseparable from the projectile body, affecting the penetration process; ② In order to separate the tail of the projectile from the projectile body by a sufficient distance, a sufficiently long flight distance is required. When the unstable projectile body hits the target at a long distance, the attitude of the flight becomes unstable, affecting the attitude of the target impact; ③ When the tail fin is used to stabilize the projectile, the tail fin is fixed to the projectile body, affecting the assessment of the projectile penetration depth.

[0003] It can be seen that the existing sub-caliber launch technology has problems such as the tail chasing the projectile body, attitude instability or the tail fin fixed to the projectile body, which affects the evaluation of the penetration effect.

[0004] Therefore, it is necessary to develop a two-stage separated cartridge case for sub-caliber launch of unstable projectile to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to design a two-stage separated cartridge case for sub-caliber launching of an unstable projectile in order to solve the above-mentioned problem.

[0006] The present invention achieves the above-mentioned purpose through the following technical solutions: A two-stage separation type cartridge case for launching a sub-caliber unstabilized projectile, comprising: The outer spring support is formed into an annular columnar structure, and the outer spring support includes at least two circumferentially distributed clamping petals; The tail structure of the spring is rotatably connected to the first end of the card flap, and the axis of the spring body is placed in the rotation plane of the card flap; Inner support; the inner support, outer support, tail structure and projectile body are coaxially arranged, the tail of the inner support is in contact with the tail structure, and the inner support is placed inside the outer support; a resistance platform is arranged at the tail of the inner support; a mounting groove is axially arranged inside the inner support; the projectile body is installed in the mounting groove.

[0007] The beneficial effects of the present invention are: (1) The resistance of the flap opening backwards is used to drive the tail structure to decelerate and distance itself from the flying projectile, thus solving the problem of the large-mass tail structure being unable to separate. (2) During flight, the inner cartridge slides backward along the axis of the missile body under the action of air resistance, which increases the flight stability of the combination of the inner cartridge and the missile body, and enables the missile to hit the target at a longer distance and with a smaller attitude angle. At the same time, due to the longer flight distance, the tail structure is separated from the missile body more thoroughly. (3) By setting up the resistance platform, the inner support can be separated from the projectile before collision, or it can hit the target together with the projectile. Since the inner support can slide along the axial direction of the projectile and has a small mass, the effect of the inner support on the penetration of the projectile can be ignored. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 is a cross-sectional view of the present invention; Figure 3 It is a schematic diagram of the principle of the two-stage separation process of the present invention; Figure 4 It is a schematic diagram of the structure of the inner spring support in the present invention; Figure 5 It is a schematic diagram of the matching structure between the inner spring support and the spring body in the present invention; Figure 6 for Figure 5 Schematic diagram of the aa section in FIG. Figure 7 for Figure 5 Left view of .

[0009] Legend: 1-external support; 2-internal support; 3-tail assembly; 4-boss; 5-body; 6-flap; 7-hinge; 8-connecting seat; 9-casing; 10-tail fin; 11-resistance platform. DETAILED DESCRIPTION

[0010] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0011] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0012] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0013] In the description of the present invention, it should be understood that the terms "upper", "lower", "inside", "outside", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the product of the invention is usually placed when in use, or are directions or positional relationships commonly understood by those skilled in the art. These directions or positional relationships are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0014] Furthermore, the terms “first”, “second”, etc. are merely used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0015] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms such as "setting" and "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0016] The specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings.

[0017] like Figure 1-7 As shown, a two-stage separation type cartridge case for non-stabilized projectile sub-caliber launch comprises: The outer spring support 1 is formed into an annular columnar structure, and includes three circumferentially distributed clips 6; the side wall of the clip 6 is concave inward, and an inclined surface is formed at the front end of the inner side wall of the clip plate; the diameter of the concave part of the side wall of the clip 6 is slightly larger than the diameter of the outer side wall of the inner spring support 2; Tail structure; the tail assembly 3 includes a connecting seat 8, a plurality of hinges 7, and the tail assembly 3. The first end of the tail assembly 3 is threadedly connected to the first end of the connecting seat 8. The second end of the connecting seat 8 is respectively connected to the first ends of the three clips 6 through three hinges 7. The axis of the body 5 is placed in the rotation plane of the clip 6. Inner spring support 2; inner spring support 2, outer spring support 1, tail structure, and projectile 5 are coaxially arranged, inner spring support 2 includes sleeve 9, tail end of sleeve 9 is provided with tail 10, projectile 5 is placed in sleeve 9; sleeve 9 is placed in outer spring support 1; a resistance platform 11 is provided on the outer side of the first end of sleeve 9; a mounting groove is axially arranged in sleeve 9; resistance platform 11 is formed into a circular ring, and the end surface of resistance platform 11 is perpendicular to the axis of projectile 5; projectile 5 is installed in the mounting groove; Boss 4; the first end of boss 4 contacts with the first end face of the tail assembly 3, the second end of boss 4 is formed with a cylindrical protrusion, the tail of the body 5 contacts with the end of the cylindrical protrusion, the first end of the sleeve 9 is sleeved outside the cylindrical protrusion, and the first end of the sleeve 9 contacts with the second end of the boss 4; A restraint ring is used to restrain the radial position of the three clips 6 before the test ejection into the gun barrel.

[0018] In the present application, the main function of the outer support 1 is to maintain the motion posture of the test projectile in the barrel and to separate from the projectile body 5 after exiting the barrel; the inner support 2 can slide axially along the projectile body 5, and is used to stabilize the flight posture of the projectile body 5 after the outer support 1 is separated; the setting of the boss 4 is to support the projectile body 5 while moving the center of mass of the projectile body 5 forward to ensure the initial flight stability of the combination of the projectile body 5 and the inner support 2, and the tail structure is used to seal the gunpowder gas and promote the movement of the test projectile. The tail 10 is used to stabilize the flight of the projectile body 5, and the annular resistance platform 11 creates a resistance difference between the projectile body 5 and the inner support 2, thereby generating a longitudinal separation process, and the sleeve 9 is used to limit the launch process and flight process of the projectile body 5.

[0019] The two-stage separation cartridge case can effectively separate the passive mass through two separations to prevent the tail of the projectile from colliding with the projectile body 5; the slidable inner cartridge case 2 with the tail fin 10 can not only make the projectile body 5 more and more stable in flight, but also avoid affecting the penetration of the projectile body 5 at the moment of collision, and effectively solve the problems of the tail of the projectile chasing the projectile body 5, the instability of the posture of the projectile body 5, and the tail fin 10 affecting the penetration of the projectile body 5 in sub-caliber firing.

[0020] The installation and use method of the present invention comprises the following steps: (1) The clamping flap 6 and the connecting seat 8 are combined to form an outer elastic support 1; (2) Connecting the outer support 1 and the tail assembly 3 by threading; (3) Open the latch 6 of the outer spring support 1 and insert the boss 4, the inner spring support 2 and the spring body 5; (4) closing the card flap 6 and restraining the card flap 6 with a restraining ring; (5) Load the entire two-stage split cartridge case into the gun bore and fire; (6) The gunpowder gas acts on the tail of the two-stage separation sabot and pushes the projectile body 5 to move along the gun bore at an accelerated speed; (7) After exiting the muzzle, the restraining ring breaks and the latch 6 opens; (8) The latch 6 flips backwards under the action of air resistance, releasing the assembly of the projectile 5 and the inner support 2; (9) The tail assembly 3 continues to decelerate under the action of the flap 6 and its own air resistance, while the projectile 5 and the inner support 2 continue to fly; (10) Due to the presence of the annular resistance platform 11, there is a resistance difference between the inner retainer 2 and the projectile body 5, and the inner retainer 2 begins to move backward along the projectile body 5, and the flight stability of the assembly of the projectile body 5 and the inner retainer 2 is increased; (11) The inner cartridge case 2 separates from the projectile body 5, and the projectile body 5 hits the target.

[0021] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A two-stage separation sabot for non-stable projectile sub-caliber launch, characterized in that: include: External buttstock; The outer spring support is formed into an annular columnar structure, and the outer spring support includes at least two circumferentially distributed clamping petals; The tail structure of the spring is rotatably connected to the first end of the card flap, and the axis of the spring body is placed in the rotation plane of the card flap; Inner support; the inner support, outer support, tail structure and projectile body are coaxially arranged, the tail of the inner support is in contact with the tail structure, and the inner support is placed inside the outer support; a resistance platform is arranged at the tail of the inner support; a mounting groove is axially arranged inside the inner support; the projectile body is installed in the mounting groove.

2. A two-stage separation type cartridge for sub-caliber launch of an unstabilized projectile according to claim 1, characterized in that: The side wall of the clamping flap is recessed inwards, and an inclined surface is formed at the front end of the inner side wall of the clamping plate.

3. A two-stage separation type cartridge for sub-caliber launch of an unstabilized projectile according to claim 2, characterized in that: The diameter of the inner depression of the side wall of the clip is slightly larger than the diameter of the outer wall of the inner spring support.

4. A two-stage separation type cartridge for sub-caliber launch of an unstabilized projectile according to claim 1, characterized in that: The tail structure includes a connecting seat, a plurality of hinges, and a tail assembly. The first end of the tail assembly is connected to the first end of the connecting seat, and the second end of the connecting seat is connected to the first ends of the plurality of clips through a plurality of hinges.

5. A two-stage separation type cartridge for sub-caliber launch of an unstabilized projectile according to claim 1, characterized in that: The inner bullet support comprises a sleeve, a tail fin is arranged at the rear end of the sleeve, and the projectile body is placed in the sleeve.

6. A two-stage separation type cartridge for sub-caliber launch of an unstabilized projectile according to claim 5, characterized in that: The two-stage separate cartridge case also includes a boss, a first end of the boss contacts the first end face of the tail assembly, a second end of the boss forms a cylindrical protrusion, the tail of the projectile body contacts the end of the cylindrical protrusion, a first end of the sleeve is sleeved on the outside of the cylindrical protrusion, and the first end of the sleeve contacts the second end of the boss.

7. A two-stage separation type cartridge for sub-caliber launch of an unstabilized projectile according to claim 5, characterized in that: The resistance platform is formed into a circular ring shape, and the end surface of the resistance platform is perpendicular to the axis of the projectile.

8. A two-stage separation type cartridge for sub-caliber launch of an unstabilized projectile according to claim 1, characterized in that: The two-stage split cartridge case also includes a restraint ring for restraining the radial position of at least two clips before the test ejection out of the gun bore.

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