CN113028908A - Underwater stable-rotation supercavitation bullet - Google Patents
Underwater stable-rotation supercavitation bullet Download PDFInfo
- Publication number
- CN113028908A CN113028908A CN202110428684.5A CN202110428684A CN113028908A CN 113028908 A CN113028908 A CN 113028908A CN 202110428684 A CN202110428684 A CN 202110428684A CN 113028908 A CN113028908 A CN 113028908A
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- cylinder
- bullet
- underwater
- supercavitation
- cavitator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B10/00—Means for influencing, e.g. improving, the aerodynamic properties of projectiles or missiles; Arrangements on projectiles or missiles for stabilising, steering, range-reducing, range-increasing or fall-retarding
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B10/00—Means for influencing, e.g. improving, the aerodynamic properties of projectiles or missiles; Arrangements on projectiles or missiles for stabilising, steering, range-reducing, range-increasing or fall-retarding
- F42B10/02—Stabilising arrangements
- F42B10/26—Stabilising arrangements using spin
- F42B10/28—Stabilising arrangements using spin induced by gas action
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- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
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Abstract
The invention discloses an underwater rotationally-stable supercavitation bullet, which relates to the technical field of bullets and comprises a support body and a cavitator, wherein one end of the cavitator is provided with a groove, the support body comprises an embedding body, a first cylinder and a cone, the embedding body, the first cylinder and the cone are sequentially connected, and the embedding body is in adaptive connection with the groove. According to the invention, one end of the cavitator, which is far away from the support body, is a plane, so that a supercavitation bullet moving underwater can break water flow to form supercavitation, meanwhile, the outer surface of the cavitator is designed to be a conical surface with variable taper, so that the resistance can be reduced, and the first cylinder on the support body is combined to form a groove-shaped structure in the area, so that the groove-shaped structure can play a role in adjusting the mass center of the bullet, and meanwhile, the first cylinder and the cone on the support body can generate lift force, so that the precision is improved, and the stability of the supercavitation bullet in the air and in water can be further improved.
Description
Technical Field
The invention relates to the technical field of bullets, in particular to a supercavitation bullet with stable underwater rotation.
Background
Due to the special underwater operation environment, the design of the common bullet is based on the use in the air, when shooting in water, because the density of water is about 750 times of the density of the air, the viscosity and the resistance of the water are far higher than the air, the shooting range of the bullet in the water is shortened, the stability of the bullet in the water is poor, and the hit rate and the lethality of the underwater shooting are greatly reduced.
The existing underwater bullet adopts a special long rod type arrow-shaped structure to ensure that the bullet keeps stable when flying underwater and has reliable hit rate and killing power. However, the stick-arrow bullets have a number of disadvantages: firstly, because the bullet is slender, a special gun must be used for shooting; secondly, the design of the ammunition supply mechanism leads to the complex structure of the underwater firearms.
Therefore, the problem to be solved by the technical staff in the field is how to provide a supercavitation bullet which can ensure the stability of the bullet when flying underwater and has reliable hit rate and lethality and stable underwater rotation.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the above-mentioned problems in the prior art. Therefore, the invention provides the supercavitation bullet with stable underwater rotation, which increases the shooting range of the bullet in water and ensures the stability of the bullet in water.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a stable supercavitation bullet of underwater rotation, includes support body and cavitator, the one end of cavitator has the recess, the support body includes embedding body, first cylinder and cone, embedding body, first cylinder and cone link to each other in proper order, the embedding body with recess adaptation is connected.
Furthermore, the outer wall of the cavitator comprises a first conical surface, a second conical surface and a cylindrical surface, the first conical surface and the cylindrical surface are in transition connection through the second conical surface, and the taper of the second conical surface is gradually reduced from the first conical surface to the cylindrical surface.
Still further, the cylindrical surface has a diameter greater than a diameter of the first cylinder.
Further, the insert, the first cylinder and the cone are of an integrally formed structure.
Further, one end of the cavitator, which is far away from the support body, is a plane.
Further, the end surface of the insert body is in contact with the bottom of the groove.
Further, the underwater rotation-stable supercavitation bullet further comprises a second cylinder, the second cylinder is connected with one end, far away from the first cylinder, of the cone, and the diameter of the second cylinder is larger than that of the first cylinder.
Further, the diameter of the second cylinder is equal to the diameter of the end face of the cone away from the first cylinder.
Through the technical scheme, compared with the prior art, the invention discloses a supercavitation gun bullet with stable underwater rotation, which utilizes the supercavitation principle, through the arrangement of the surface structures of the support body and the cavitator, the surface of the cavitator is the combination of a first conical surface, a second conical surface and a cylindrical surface, one end of the cavitator, which is far away from the support body, is a plane, so that the supercavitation gun bullet moving underwater can be flushed with water flow to form supercavitation (the lower the air pressure is used, the lower the boiling point is, a low-pressure area is formed around the gun bullet in the underwater movement process, water is boiled to generate steam, a steam protective film is formed, the gun bullet moves in water under the protection of the steam, meanwhile, the outer surface of the cavitator is designed into the conical surface (circular arc) with variable taper, the function of reducing resistance can be achieved, the arrangement of the first cylinder on the support body is combined, so that the area forms a, this cell type structure can play the effect of adjusting the bullet barycenter, and simultaneously, the setting of the first cylinder on the support body and cone can produce lift, improves the precision and then can improve the stability of supercavitation bullet in air and aquatic.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic view of the overall structure of an underwater rotationally stable supercavitation cartridge provided by the invention.
Wherein: 1 is a support body; 11 is an embedded body; 12 is a first cylinder; 13 is a cone; 14 is a second cylinder; 2 is a cavitator; 3 is a groove; 4 is a first conical surface; 5 is a second conical surface; 6 is a cylindrical surface; and 7 is a threaded connection region.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the embodiment of the invention discloses an underwater rotation-stable supercavitation bullet, which comprises a support body 1 and a cavitator 2, wherein one end of the cavitator 2 is provided with a groove 3, the end provided with the groove 3 is the tail part of the supercavitation bullet, and the other end of the cavitator 2 is a plane. The support body 1 comprises an embedding body 11, a first cylinder 12 and a cone 13, the embedding body 11, the first cylinder 12 and the cone 13 are sequentially connected and are of an integrally formed structure, the embedding body 11 is in adaptive connection with the groove 3, the end face of the embedding body 11 is in contact with the bottom of the groove 3, the specific connection mode is that threads are arranged on the outer wall of the embedding body 11, threads are also arranged on the inner wall of the groove 3, the embedding body 11 is in threaded connection with the groove 3, a threaded connection area 7 is formed at the connection part, a groove-shaped structure can be formed between the cavitator 2 and the cone 13 through the arrangement of the first cylinder 12, the width of the groove-shaped structure and the taper of the cone 13 can improve the size formed by the supercavity, the groove-shaped structure can adjust the mass center of a supercavity gun bullet, the stability of the supercavity is further improved, the outer wall of the cylindrical surface cavitator 2 comprises a first conical surface 4, a second, first conical surface 4 and face of cylinder 6 are through second conical surface 5 transitional coupling, and the tapering of second conical surface 5 reduces to face of cylinder 6 direction by first conical surface 4 gradually, and in other embodiments, second conical surface 5 is the arc surface, through first conical surface 4 and face of cylinder 6 of arc surface transitional coupling, the diameter of face of cylinder 6 is greater than the diameter of first cylinder 12.
In the embodiment, the cavitator 2 is preferably made of alloy steel, and by utilizing the characteristics of high strength and high hardness of the alloy steel, to ensure the killing power of the supercavitation gun bullet, the support body 1 is made of copper material, so as to facilitate the embedding of rifling, when in launching, the combustion of the ammunition produces a large amount of gas which pushes the supercavitation cartridge out of the cartridge case, the initial velocity of the supercavitation cartridge is high, but the greater the velocity of the supercavitation gun projectile, the greater the air or water resistance encountered, if the supercavitation gun projectile does not impart sufficient moment of inertia upon discharge, unacceptable shooting errors are caused at a certain range, so that the support body 1 is made of copper, the support body 1 is easily embedded into rifling in the advancing process of the support body in a gun barrel, the supercavitation gun bullet is enabled to rotate rapidly, the self-rotation inertia of the supercavitation gun bullet is endowed, the air resistance moment is overcome, and the supercavitation gun bullet can obtain enough shooting accuracy at a long distance.
In addition, the support body 1 made of copper material has the advantages that the copper has good ductility, certain strength and better corrosion resistance than steel, the precision can be improved and the service life of a die can be prolonged for the manufacture of the support body 1, and the support body 1 with good ductility can be tightly attached to a bullet chamber during launching to achieve an airtight effect; at the same time, copper itself is a metal "lubricant".
In the above embodiment, the underwater rotationally stable supercavitation cartridge further comprises a second cylinder 14, the second cylinder 14 is connected with one end of the cone 13 far away from the first cylinder 12, the diameter of the second cylinder 14 is larger than that of the first cylinder 12, and the diameter of the second cylinder 14 is equal to that of the end face of the cone 13 far away from the first cylinder 12. The surface of the cone 13 is inclined at an angle of 2-5 degrees, i.e. alpha is 2-5 degrees in the figure, the surface of the first conical surface 4 is inclined at an angle of 5-10 degrees, i.e. theta is 5-10 degrees in the figure, in the embodiment, alpha is preferably 4 degrees, theta is preferably 8 degrees, and the size of the supercavitation bullet is 5.8x42 mm.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. The utility model provides a rotationally stable supercavitation bullet under water which characterized in that, includes support body and cavitator, the one end of cavitator has the recess, the support body includes embedding body, first cylinder and cone, embedding body, first cylinder and cone link to each other in proper order, the embedding body with recess adaptation connection.
2. The underwater rotationally stabilized super-cavitation bullet as claimed in claim 1, wherein the outer wall of the cavitator includes a first conical surface, a second conical surface and a cylindrical surface, the first conical surface and the cylindrical surface are transitionally connected through the second conical surface, and the taper of the second conical surface is gradually reduced from the first conical surface to the cylindrical surface.
3. An underwater rotationally stabilized super-cavity firearm round according to claim 2, wherein the diameter of the cylindrical surface is greater than the diameter of the first cylinder.
4. An underwater rotationally stabilized super-cavity firearm round according to claim 1, wherein the insert, the first cylinder and the cone are of an integrally formed construction.
5. An underwater rotationally stabilized super-cavity firearm round according to claim 1 and wherein the end of the cavitator remote from the receptacle is planar.
6. An underwater rotationally stabilized super-cavity firearm round according to claim 1, wherein the end face of the insert is in contact with the bottom of the recess.
7. The underwater rotationally stabilized super-cavity firearm and, in accordance with claim 1, further comprising a second cylinder attached to an end of the cone distal from the first cylinder, the second cylinder having a diameter greater than the diameter of the first cylinder.
8. An underwater rotationally stabilized super-cavity firearm bullet according to claim 7 and wherein the diameter of said second cylinder is equal to the diameter of the end face of said cone remote from said first cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110428684.5A CN113028908A (en) | 2021-04-21 | 2021-04-21 | Underwater stable-rotation supercavitation bullet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110428684.5A CN113028908A (en) | 2021-04-21 | 2021-04-21 | Underwater stable-rotation supercavitation bullet |
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| Publication Number | Publication Date |
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| CN113028908A true CN113028908A (en) | 2021-06-25 |
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| CN202110428684.5A Pending CN113028908A (en) | 2021-04-21 | 2021-04-21 | Underwater stable-rotation supercavitation bullet |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114526646A (en) * | 2022-03-23 | 2022-05-24 | 东北大学 | Cross-medium large-kinetic-energy supercavitation bullet |
| CN115014130A (en) * | 2022-07-14 | 2022-09-06 | 东北大学 | Super-cavity bullet with long underwater penetration distance |
| CN115265289A (en) * | 2022-05-16 | 2022-11-01 | 东北大学 | Bullet with small critical incident angle |
| CN115307491A (en) * | 2022-04-07 | 2022-11-08 | 东北大学 | Underwater motion stable supercavitation bullet |
Citations (8)
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| US20110297031A1 (en) * | 2007-03-27 | 2011-12-08 | Lockheed Martin Corporation | Surface Ship, Deck-Launched Anti-Torpedo Projectile |
| EP2551630A2 (en) * | 2011-07-28 | 2013-01-30 | Karl-Heinz Eßmann | Projectile de chasse en plusieurs parties à expansion partielle |
| US20160282096A1 (en) * | 2015-03-24 | 2016-09-29 | The United States Of America As Represented By The Secretary Of The Navy | Cryogenically generated compressed gas core projectiles and related methods thereof |
| CN207439277U (en) * | 2018-01-23 | 2018-06-01 | 北京思创天罡装备科技有限公司 | Underwater gun's bullet bullet based on supercavity principle |
| RU2672072C1 (en) * | 2018-01-10 | 2018-11-09 | Александр Георгиевич Семенов | Bullet-cavitator for underwater firearm |
| US20190113318A1 (en) * | 2017-10-16 | 2019-04-18 | Next Generation Tactical, LLC. | Small arms projectile |
| CN112380784A (en) * | 2020-09-29 | 2021-02-19 | 西北工业大学 | Super-cavity projectile without tail wing and design method thereof |
| CN112444165A (en) * | 2019-09-04 | 2021-03-05 | 南京理工大学 | Underwater supercavitation navigation body with hollow appearance characteristics |
-
2021
- 2021-04-21 CN CN202110428684.5A patent/CN113028908A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110297031A1 (en) * | 2007-03-27 | 2011-12-08 | Lockheed Martin Corporation | Surface Ship, Deck-Launched Anti-Torpedo Projectile |
| EP2551630A2 (en) * | 2011-07-28 | 2013-01-30 | Karl-Heinz Eßmann | Projectile de chasse en plusieurs parties à expansion partielle |
| US20160282096A1 (en) * | 2015-03-24 | 2016-09-29 | The United States Of America As Represented By The Secretary Of The Navy | Cryogenically generated compressed gas core projectiles and related methods thereof |
| US20190113318A1 (en) * | 2017-10-16 | 2019-04-18 | Next Generation Tactical, LLC. | Small arms projectile |
| RU2672072C1 (en) * | 2018-01-10 | 2018-11-09 | Александр Георгиевич Семенов | Bullet-cavitator for underwater firearm |
| CN207439277U (en) * | 2018-01-23 | 2018-06-01 | 北京思创天罡装备科技有限公司 | Underwater gun's bullet bullet based on supercavity principle |
| CN112444165A (en) * | 2019-09-04 | 2021-03-05 | 南京理工大学 | Underwater supercavitation navigation body with hollow appearance characteristics |
| CN112380784A (en) * | 2020-09-29 | 2021-02-19 | 西北工业大学 | Super-cavity projectile without tail wing and design method thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114526646A (en) * | 2022-03-23 | 2022-05-24 | 东北大学 | Cross-medium large-kinetic-energy supercavitation bullet |
| CN115307491A (en) * | 2022-04-07 | 2022-11-08 | 东北大学 | Underwater motion stable supercavitation bullet |
| CN115307491B (en) * | 2022-04-07 | 2024-02-02 | 东北大学 | Supercavitation bullet with stable underwater movement |
| CN115265289A (en) * | 2022-05-16 | 2022-11-01 | 东北大学 | Bullet with small critical incident angle |
| CN115265289B (en) * | 2022-05-16 | 2023-08-29 | 东北大学 | Bullet with small critical incident angle |
| CN115014130A (en) * | 2022-07-14 | 2022-09-06 | 东北大学 | Super-cavity bullet with long underwater penetration distance |
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Application publication date: 20210625 |
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| RJ01 | Rejection of invention patent application after publication |