CN116858033A - Cross-medium water-entering bullet with front throwing structure - Google Patents
Cross-medium water-entering bullet with front throwing structure Download PDFInfo
- Publication number
- CN116858033A CN116858033A CN202311020192.8A CN202311020192A CN116858033A CN 116858033 A CN116858033 A CN 116858033A CN 202311020192 A CN202311020192 A CN 202311020192A CN 116858033 A CN116858033 A CN 116858033A
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- Prior art keywords
- throwing structure
- bullet
- water
- main
- cylinder
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 42
- 238000000926 separation method Methods 0.000 claims abstract description 22
- 229920001971 elastomer Polymers 0.000 claims abstract description 17
- 239000000806 elastomer Substances 0.000 claims abstract description 17
- 239000003721 gunpowder Substances 0.000 claims abstract description 12
- 238000005498 polishing Methods 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 12
- 239000003814 drug Substances 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 8
- 239000002737 fuel gas Substances 0.000 claims description 3
- 230000009467 reduction Effects 0.000 abstract description 4
- 230000003068 static effect Effects 0.000 abstract description 4
- 238000002485 combustion reaction Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 230000003116 impacting effect Effects 0.000 abstract 1
- 239000000843 powder Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
- F42B12/02—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Toys (AREA)
Abstract
The invention discloses a cross-medium water-entering bullet with a front throwing structure, which utilizes the front throwing structure released in advance to impact a static water body to generate cavitation bubbles so as to enable the water body to flow, and a main bullet body subsequently impacts the flowing water body with the cavitation bubbles, so that the water-entering load is greatly reduced compared with the case of directly impacting the static water body; belongs to the field of bullet water-loading load reduction; the cross-medium water-entering bullet with the front throwing structure comprises a front throwing structure, a separation connecting device and a main bullet body, which are connected through threads and pins respectively; the invention uses the high-pressure gas generated by the combustion of gunpowder to push the piston to move, so that the front throwing structure moves forward to shear pins, and the separation of the front throwing structure and the main elastomer is realized; the piston is pushed to the stop pin to stop moving, and the front throwing structure drives the base to move forwards together; the front throwing structure and the separation connecting device are used for leading water into the main body, cavitation bubbles are generated and water body flow is formed, and then the main body impacts the flowing water body, so that the effect of high-speed cross-medium water-entering load reduction is achieved.
Description
Technical Field
The invention relates to the field of water entry and load reduction of bullets, in particular to a cross-medium water entry bullet with a front throwing structure.
Background
The entry of bullets from air into water is a typical cross-media movement problem and the process of bullets crossing air-water interfaces is highly nonlinear and highly unsteady. Once the bullet head contacts the water surface, the water body around the bullet head is discharged, and the water body generates radial flow to form a flow field; at the same time, the bullet head receives the reaction force of the water body, and generates extremely high water loading. The high impact load applied to the bullet when the bullet enters water not only can cause the ballistic instability of the bullet, but also can cause the failure of internal devices, the deformation and even the breakage of the whole structure of the bullet, and the action capacity of the bullet is seriously affected.
Through analysis of cross-medium water entering movement characteristics of bullets and the like, researchers find that the water entering process of bullets is from the contact of the bullet head with the water surface to the complete wetting of bullets, and the process can be divided into six stages of shock wave formation, flow formation, cavitation opening, cavitation closing, cavitation collapse and complete wetting; wherein the load carried by the bullet is greatest in both the shock wave generation and the flow formation phases. Therefore, researchers have proposed optimizing the projectile head, installing the buffer head cap, installing the head cavitator, etc. load shedding methods.
The front throwing structure is added on the head of the bullet, so that the front throwing structure can be used for generating water-entering cavitation bubbles and forming water body flow before the bullet enters water, and the water-entering load of the bullet can be greatly reduced when the bullet enters water and collides with the cavitation bubble-containing water body formed in the front.
At present, no patent is yet proposed for a method for reducing the entry load of bullets by adopting a front-throwing structure.
Disclosure of Invention
In view of the above, the invention provides a cross-medium water-entering bullet with a front throwing structure, which utilizes the front throwing structure water-entering impact released in advance to enable static water bodies to generate cavitation bubbles and flow, and then main projectile body water-entering impacts the flowing water bodies containing cavitation bubbles, so that the water-entering load is greatly reduced compared with the impact of the main projectile body water-entering impact on the static water bodies, and the purpose of water-entering load reduction of the main projectile body is realized.
In order to achieve the above purpose, the technical scheme of the invention is as follows: a cross-medium water-entering bullet with a front throwing structure comprises a front throwing structure, a separation connecting device and a main elastomer.
The front throwing structure is in a combination form of a hemispherical body and a cylinder so as to obtain a good pneumatic appearance; a hollow round table is dug from the rear end in the inner part, and a front polishing structure threaded hole is processed so as to be convenient to connect with the separation connecting device; four pin mounting openings are designed on the front projectile structure, so that the front projectile structure is convenient to connect with a main projectile body.
The separation and connection device comprises an ejection cylinder and a base. The ejection cylinder is a core component of the separation connecting device and comprises a cylinder body, a stop pin, a medicine chamber, gunpowder, an insensitive igniter, a piston, a sealing ring and a metal bushing. The cylinder body is cylindrical, the front part is provided with a cylinder body front thread, and the rear part is provided with a cylinder body rear thread. The inner side of the cylinder body is provided with a stop pin for controlling the travel of the piston. An insensitive igniter is arranged in the powder chamber, and gunpowder is pressed into a column shape and is put into the powder chamber. The piston ring is provided with a sealing ring for sealing gunpowder fuel gas, thereby ensuring the effectiveness of acting. The front section of the metal bushing is conical, the rear section of the metal bushing is cylindrical, and the metal bushing is arranged outside the piston and the cylinder body to protect the piston and the cylinder body. The base is divided into a front section and a rear section, the front section is hollow and cylindrical, and a base threaded hole is formed in the front section; the rear section is arc-shaped and is tightly contacted with the head of the main elastomer.
Four reserved grooves are formed in the main elastic body and are convenient to connect with the front throwing structure.
The screw thread at the front part of the cylinder body is matched with the screw hole of the front throwing structure, so that the ejection cylinder is tightly connected with the front throwing structure; the screw thread at the rear part of the cylinder body is matched with the screw hole of the base, so that the ejection cylinder is tightly connected with the base. The pins sequentially penetrate through the pin mounting openings of the front projectile structure and the grooves on the main projectile body, so that the front projectile structure is firmly connected with the main projectile body, and the base is tightly contacted with the head of the main projectile body.
The beneficial effects are that:
compared with the prior art, the invention has the advantages that: the front throwing structure is added at the front part of the main projectile body, so that the impact load of the main projectile body in water can be effectively reduced, and the damage to the head part of the main projectile body and the internal devices of the main projectile body is avoided; the traditional speed-reducing load-reducing method is abandoned, the speed-reducing mechanism is reduced, and the probability of interception of the main elastic body is reduced due to the fact that the main elastic body enters water at a high speed.
Drawings
FIG. 1 is a schematic diagram of a cross-media water entry bullet structure with a front projectile structure;
FIG. 2 is a schematic diagram of a front polishing structure;
FIG. 3 is a schematic view of a primary elastomer;
FIG. 4 is a schematic view of a base;
fig. 5 is a schematic view of an ejector cartridge.
In the figure, a 1-front throwing structure and a 2-separation connecting device are shown; the device comprises a main body, a 4-ejection cylinder, a 5-base, a 6-pin, a 7-front-polishing structure head, an 8-front-polishing structure tail, a 9-pin mounting hole, a 10-front-polishing structure threaded hole, a 11-groove, a 12-base front section, a 13-base threaded hole, a 14-base rear section, a 15-cylinder front thread, a 16-metal bushing, a 17-stop pin, a 18-cylinder, a 19-sealing ring, a 20-cylinder rear thread, a 21-insensitive igniter, a 22-gunpowder, a 23-medicine chamber and a 24-piston.
Detailed Description
The invention will now be described in detail by way of example with reference to the accompanying drawings.
The invention provides a cross-medium water-entering bullet with a front throwing structure, which consists of three parts, namely a front throwing structure 1, a separation connecting device 2 and a main elastomer 3, wherein the front throwing structure, the separation connecting device and the main elastomer 3 are respectively connected through threads and pins. Before the main projectile body 3 enters water, the front throwing structure 1 is made to enter water first to generate cavitation bubbles to form water body flow, and then the main projectile body 3 enters water, so that the water entering load can be greatly reduced.
The front polishing structure 1 consists of a hemispherical front polishing structure head 7 and a cylindrical front polishing structure tail 8, wherein the cylindrical tail is hollow, and is provided with a front polishing structure threaded hole 10 which is convenient to connect with the separation connecting device 2.
The disconnection means 2 comprise an ejection cylinder 4 and a base 5. The ejection cylinder 4 is divided into a metal bushing 16, a cylinder 18, a stop pin 17, a piston 24, a seal 19, a medicine chamber 23, powder 22 and an insensitive igniter 21. The metal bushing 16 is mounted outside the piston 24 and the cylinder 18 to protect the piston 24 and the cylinder 18 from damage. The front and rear ends of the cylinder 18 are provided with threads, the front end of the cylinder is connected with the front polishing structure 1 through the front thread 15 of the cylinder, and the rear end of the cylinder is connected with the base 5 through the rear thread 20 of the cylinder. The powder 22 is pressed into a column shape and placed in the powder chamber 23, and the insensitive igniter 21 in the powder chamber 23 ignites the powder 22 to generate powder fuel gas. A sealing ring 19 is arranged between the piston 24 and the cylinder 18 to seal the gunpowder gas, and the front throwing structure 1 is pushed to move forward under the action of the gunpowder gas to shear the pin 6 so as to separate the front throwing structure 1 from the main elastomer 3; the stop pin 17 on the inner side of the cylinder 18 can control the stroke of the piston 24, so that the front throwing structure 1 drives the base 5 to be separated together. The front section 12 of the base is a hollow cylinder, the rear section 14 of the base is arc-shaped, and a base threaded hole 13 is formed in the hollow cylinder so as to be convenient to connect with the ejection cylinder 4; the curvature of the circular arc of the rear section 14 of the base is matched with the curvature of the head of the main elastomer 3, so that the base 5 is tightly contacted with the main elastomer 3, and the head of the main elastomer 3 is protected.
Four grooves 11 are preset on the main projectile body 3 and matched with pin mounting holes 9 of the front projectile body 1, and the main projectile body 3 and the front projectile body 1 are connected together through the pins 6.
In fig. 1, a cross-medium water-entering bullet with a front throwing structure consists of a front throwing structure 1, a separation connecting device 2 and a main elastomer 3. The separation and connection device 2 consists of an ejection cylinder 4 and a base 5. The front projectile structure 1 is connected with the main projectile body 3 by pins 6.
In fig. 2, a front throwing structure 1 consists of a front throwing structure head 7 and a front throwing structure tail 8, wherein the front throwing structure tail 8 is hollow, and is provided with a front throwing structure threaded hole 10 which is connected with an ejection cylinder 4; the tail part 8 of the front throwing structure is provided with a pin mounting opening 9.
In fig. 3, the main elastomer 3 is provided with four grooves 11 for facilitating the installation of the pins 6.
In fig. 4, the base 5 is composed of a base front section 12 and a base rear section 14, and a base threaded hole 13 is formed in the base front section 12, so that the base is conveniently connected with a barrel rear thread 20.
In fig. 5, the ejection cartridge 4 is composed of a cartridge front screw 15, a metal bushing 16, a stopper pin 17, a cartridge 18, a seal 19, a cartridge rear screw 20, an insensitive igniter 21, a powder 22, a powder chamber 23, and a piston 24.
The assembly and connection relation of the invention is as follows: a cross-medium water-entering bullet with a front throwing structure comprises a front throwing structure 1, a separation connecting device 2 and a main elastomer 3. Installing the insensitive igniter 21 in the medicine chamber 23, and then loading the pressed gunpowder 22 into the medicine chamber 23; then, the piston 24 sleeved with the sealing ring 19 is arranged in the cylinder 18, and then the metal bushing 16 is sleeved outside the piston 24 and the cylinder 18, so that the assembly and connection of the ejection cylinder 4 are completed; screwing the screw thread 20 at the rear part of the cylinder into the screw hole 13 of the base to tightly connect the ejection cylinder 4 and the base 5; the front throwing structure 1 is screwed into the front thread 15 of the cylinder body through the front throwing structure threaded hole 10, so that the ejection cylinder 4 is connected with the front throwing structure 1; finally, the pin mounting opening 9 of the front throwing structure 1 is opposite to the groove 11 on the main elastomer 3, and is fixedly connected by the pin 6.
The specific process and working principle of the invention are described as follows:
when a cross-medium water-entering bullet with a front throwing structure flies to a preset height, the insensitive igniter 21 of the ejection cylinder 4 ignites the gunpowder 22, high-pressure gas is generated to push the piston 24 to start moving, so that the front throwing structure 1 starts to move forwards, the pin 6 is sheared, and the front throwing structure 1 and the main elastomer 3 are separated. When the piston 24 moves to the stop pin 17, the piston is not moved forward any more, and the front throwing structure 1 drives the base 5 to move forward together, so that the separation of the separation connecting device 2 and the main projectile body 3 is realized. The front throwing structure 1 and the separation connecting device 2 are used for leading water into the main body, cavitation is generated, water body flow is formed, and then the main body 3 is used for leading water into the main body.
In summary, the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. A cross-media water entry bullet comprising a front projectile structure, comprising: a front throwing structure (1), a separation connecting device (2) and a main elastomer (3); the front throwing structure (1) has good pneumatic appearance, and the front throwing structure threaded hole (10) is matched with the front thread (15) of the barrel body of the separation connecting device (2) to tightly connect the separation connecting device (2) with the front throwing structure (1); the pins (6) sequentially penetrate through the pin mounting openings (9) of the front projectile structure (1) and the grooves (11) on the main projectile body (3), so that the front projectile structure (1) and the main projectile body (3) are firmly connected, and the separation connecting device (2) is tightly contacted with the head of the main projectile body.
2. A cross-media water entry bullet with a front throwing structure according to claim 1, wherein the front throwing structure (1) consists of a front throwing structure head (7) and a front throwing structure tail (8); the front polishing structure head (7) is hemispherical, the front polishing structure tail (8) is cylindrical, the inside is hollow, a front polishing structure threaded hole (10) is processed, and the front polishing structure head is connected with the ejection cylinder (4); the tail part (8) of the front throwing structure is provided with a pin mounting opening (9).
3. A cross-media water entry bullet with a front throwing structure according to claim 1, wherein the separation connecting device (2) consists of an ejection cylinder (4) and a base (5);
the ejection cylinder (4) consists of a cylinder front thread (15), a metal bushing (16), a stop pin (17), a cylinder (18), a sealing ring (19), a cylinder rear thread (20), an insensitive igniter (21), gunpowder (22), a medicine chamber (23) and a piston (24); the cylinder body (18) is cylindrical, the front part is provided with a cylinder body front thread (15), and the rear part is provided with a cylinder body rear thread (20); the insensitive igniter (21) is arranged in the medicine chamber (23), and the gunpowder (22) is pressed into a column shape and is filled in the medicine chamber (23); a sealing ring (19) is arranged between the cylinder body (18) and the piston (24) to seal gunpowder fuel gas; a stop pin (17) is arranged on the inner side of the cylinder body (18) and controls the movement stroke of the piston (24); the front section of the metal bushing (16) is conical, the rear section is cylindrical, and the metal bushing is arranged outside the piston (24) and the cylinder body (18);
the base (5) consists of a base front section (12) and a base rear section (14), wherein the base front section (12) is hollow and cylindrical, a base threaded hole (13) is formed in the base front section, and is convenient to connect with a barrel rear thread (20), and the base rear section (14) is arc-shaped and is in tight contact with the head of the main elastomer (3).
4. A cross-media water entry bullet with a front throwing structure as claimed in claim 1, wherein four grooves (11) are formed in the main bullet body (3) and matched with pin mounting holes (9) of the front throwing structure (1) so as to facilitate the mounting of pins (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311020192.8A CN116858033A (en) | 2023-08-15 | 2023-08-15 | Cross-medium water-entering bullet with front throwing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311020192.8A CN116858033A (en) | 2023-08-15 | 2023-08-15 | Cross-medium water-entering bullet with front throwing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116858033A true CN116858033A (en) | 2023-10-10 |
Family
ID=88221764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311020192.8A Pending CN116858033A (en) | 2023-08-15 | 2023-08-15 | Cross-medium water-entering bullet with front throwing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116858033A (en) |
-
2023
- 2023-08-15 CN CN202311020192.8A patent/CN116858033A/en active Pending
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