KR101660887B1

KR101660887B1 - Bullet

Info

Publication number: KR101660887B1
Application number: KR1020160022349A
Authority: KR
Inventors: 김준규; 김형세
Original assignee: 주식회사 두레텍
Priority date: 2016-02-25
Filing date: 2016-02-25
Publication date: 2016-09-28

Abstract

A primary bobbling groove (10), a secondary bobbling groove (20), and a tertiary bubbling groove (30) are formed in order from the forward end of the warhead of the present invention, Three fluid guiding grooves 40 are formed on the rear and rear end surfaces of a cylindrical shape and the width and depth of the primary bubbling groove 10, the secondary bubbling groove 20 and the tertiary bubbling groove 30 And the fluid guiding grooves 40 are inclined at the same angle and angle with respect to a straight line passing through the center of the cross section after the warhead, And the end portions of the fluid guiding grooves 40 are spaced apart from the center of the cross section after the warhead by a predetermined distance.
With the above-described structure, the present invention provides a warhead with improved accuracy in air and water and improved effective range.

Description

Bullet Improved Multi-Purpose Warhead {Bullet}

[0001] The present invention relates to a multi-purpose warhead having improved accuracy and, more particularly, to a method for improving accuracy (accuracy) against target striking in air and water by forming a plurality of bubbling grooves on the outer circumferential surface thereof, It is about a warhead.

A bullet loaded on a projectile such as a rifle is composed of a gunpowder generating explosive energy by the explosion and a warhead flying toward the target by the launch energy. Generally, when manufacturing such a warhead, And then the molten metal such as lead is injected into the inner space of the bulge by using a nozzle or the like.

In the case of manufacturing the warhead by injecting molten metal into the inside of the bullet material as described above, it is difficult to accurately manufacture the nozzle for injecting the molten metal, and it is not easy to finely and precisely control the molten metal, Furthermore, it is often the case that molten metal such as lead injected into the inside of the tanzapi solidifies and can not be solidified to have a uniform density, which may cause the center of gravity of the warhead to be disturbed, In addition, since the gravity center of the warhead is moved to the rear side by injecting lead having a specific gravity larger than that of the inside of the bullet made of copper alloy, the war movement is increased while the warhead is flying in the air, There is a problem that accuracy (accuracy rate) is lowered.

Meanwhile, when the warhead is flying, the resistance of the warhead is reduced to increase the effective range, and at the same time, grooves are formed on the outer circumferential surface of the warhead so as to improve the accuracy, and grooves deeply inward are formed on the rear surface of the warhead, The warhead of the structure is configured such that the effective range is increased by the action of the groove formed on the outer circumferential surface of the warhead and the groove formed on the back surface of the warhead during flight in the air, .

However, when the warhead having the above structure is used as an underwater foot, deep grooves formed on the back surface of the warhead may form an excessive vortex so that the penetration force in the water is increased, but the accuracy is considerably reduced and it is difficult to use the underwater foot.

In the warhead in which a metal of a loose material such as lead is filled in the bullet, the lead filled in the inside is instantaneously compressed by the explosive force of the ammunition, and the bullet expands toward the bulge. As the contact between the warheads is improved, the explosive force of the ammunition is effectively transmitted to the warhead, and the effective range is increased. However, when the warhead of this structure is used by using the underwater foot, the explosive force of the ammunition is effectively transmitted to the warhead, The bulge is contracted by the water pressure applied to the front of the warhead and the lead charged in the inside of the bullet is pushed toward the rear of the warhead and the shape of the bullet is changed and the accuracy drops sharply.

Therefore, it is required to develop a warhead having a structure capable of improving the accuracy and effective range in the air and water by keeping the structural soundness in air and water strongly.

KR 10-2004-0004624 A KR 10-2001-0035741 A KR 10-1249770 B1 KR 10-0139880 B1

The present invention provides a multi-purpose warhead, which can be used both as a public foot and an underwater foot, and which has improved accuracy and effective range, as well as improved warping accuracy. The purpose is to do.

It is an object of the present invention to provide a bomb structure in which a primary bubbling groove, a secondary bubbling groove, and a tertiary bubbling groove are formed in order from the front end of the warhead, and three fluid guiding grooves are formed at the rear end, The width and the depth of the primary bubbling groove, the secondary bubbling groove and the tertiary bubbling groove are formed so as to gradually increase from the primary bubbling groove to the tertiary bubbling groove, and the fluid guide groove passes through the center of the cross- And the end portions of the fluid guiding grooves are respectively formed to be spaced apart from the center of the cross section after the warhead by a predetermined distance.

The present invention is characterized in that a hemispherical groove is formed inwardly between the three fluid guiding grooves and the center of the cross section of the rear end of the warhead.

Further, the present invention is characterized in that the horizontal distance between the primary bubbling groove and the secondary bubbling groove has a length corresponding to 1 to 2 times the diameter of the primary bubbling groove.

Further, the present invention is characterized in that the trailing end of the warhead portion forming the cylindrical shape is formed to be inclined outwardly by 1 to 5 degrees with respect to the tangent of the cylinder.

In addition, the present invention is characterized in that the sectional shape of the primary bubbling groove, the secondary bubbling groove and the tertiary bubbling groove is a "V" -shaped shape.

Further, another example of the present invention includes a front assembly including an insertion portion having a cylindrical shape and a protrusion having a conical shape formed on a front side of the insertion portion; Wherein a through hole is formed at an inner center thereof to be inserted therethrough and a front portion thereof is formed in a conical shape having a trapezoidal sectional shape and a rear portion of a cylindrical shape is integrally assembled to the rear portion, A primary bubbling groove and a secondary bubbling groove are formed in order on the rear side of the rear fixed body and a tertiary bubbling groove is formed on the outer peripheral surface of the middle portion in the longitudinal direction of the rear fixed body, Thereby forming a plurality of fluid guiding grooves.

The front assembly and the rear fixing body are inserted into the through holes of the rear fixing body so that the insertion portion is protruded toward the rear side of the rear fixing body so that the insertion portion of the front assembly is protruded toward the rear side of the rear fixing body. So that they are joined to each other by pressing the fixing holes in a state where they are widened to the outside.

In addition, the present invention is characterized in that the front assembly is made of a manganese-molybdenum alloy or a tungsten alloy.

According to the present invention, by forming a plurality of bubbling grooves on the outer circumferential surface of the warhead, it is possible to improve the accuracy in air and water and to improve the effective range.

In the present invention, since the hemispherical groove is formed inwardly in the rear end surface of the warhead, the impact accuracy on the target is improved.

Further, in the present invention, the trailing end of the warhead portion forming the cylindrical shape is inclined outwardly by 1 to 5 degrees with respect to the tangent of the cylinder, thereby further improving the accuracy and increasing the effective range.

Further, since the warhead can be manufactured by merely assembling the front assembly and the rear fixture, the present invention can improve the preparation and diversify the seed burden.

In addition, since the type and specific gravity of the metal constituting the front assembly can be freely selected, the warhead suitable for various types of projectiles can be manufactured according to the use purpose of the warhead, Reduced angles can improve flight stability, accuracy and effective range.

1 is a perspective view showing an example of a multipurpose warhead having an improved accuracy according to the present invention,
2,
3 is an enlarged view showing an enlarged view of primary and secondary bubbling grooves according to the present invention,
Fig. 4 (a) is a table showing test results of a warhead in which no warp is formed,
Fig. 4 (b) is a table showing test results of the warhead in which warp is formed,
FIG. 5 is an exploded perspective view showing another embodiment of a multipurpose warhead having an improved accuracy according to the present invention,
6 is a sectional view showing an example of a front assembly according to the present invention,
7 is a sectional view showing an example of a rear fixture according to the present invention,
FIG. 8 is a diagram showing the operational relationship of the force received when the multi-purpose warhead having improved hit ratio according to the present invention is in flight.

Hereinafter, the structure and operation of the present invention will be described in more detail with reference to the accompanying drawings showing preferred embodiments.

As shown in FIGS. 1 and 2, the warhead of the present invention comprises a general warhead-shaped body 1 having a conical front portion and a cylindrical rear portion. A primary bubbling groove 10, a secondary bubbling groove 20, a tertiary bubbling groove 30 and a fluid guiding groove 40 are formed in this main body 1 in order from the front end thereof.

The main body 1 is made of a metal such as a copper alloy, and has a general warhead shape in which the front portion is substantially conical and the rear portion is cylindrical.

As shown in Figs. 1 and 2, a primary bubbling groove 10 and a secondary bubbling groove 20 having a cross-sectional shape of a "V" shape are formed in order at the tip rear side of the main body 1, The primary bubbling groove 10 is a portion extending obliquely rearward from the end of the conical shape of the main body 1 (hereinafter, referred to as "tip A") The diameter of the secondary bubbling groove 20 is formed to be smaller than the diameter at the end of the leading end A and the secondary bubbling groove 20 is also formed in the same manner as the portion extending from the first extending portion B (Hereinafter, referred to as "second extended portion C") is smaller than the diameter at the end of the first extended portion B. In the present invention, When the warhead is flying in the air or underwater by forming the secondary bubbling grooves 20 and the secondary bubbling grooves 10, The vortexes are formed at the portions where the pistons 10 and 20 are formed, thereby reducing the flying resistance of the warhead and suppressing the occurrence of pitching and rolling phenomena, thereby increasing the effective range and increasing the accuracy.

The horizontal distance L between the primary bubbling groove 10 and the secondary bubbling groove 20 corresponds to 1 to 2 times the diameter d of the primary bubbling groove 10 as shown in FIG. This is due to the experimental results confirming that accuracy improves the effective range at this distance.

The shape of the cross section of the cylindrical bubbling groove 20 is the same as that of the primary bubbling groove 10 and the secondary bubbling groove 20 in the middle portion in the longitudinal direction of the cylindrical shape. The width and the depth of the primary bubbling groove 10, the secondary bubbling groove 20 and the tertiary bubbling groove 30 are set so that the primary bubbling groove 10, the secondary bubbling groove 20, The resistance of the fluid due to the advance of the warhead increases as it moves from the bubbling groove 10 to the tertiary bubbling groove 30. This is because the resistance of the fluid due to the advance of the warhead increases as it goes further to the rear of the warhead, The width and depth of the groove are increased toward the bubbling groove 30, thereby increasing the size (diameter) of the bubbling formed around the bullet, thereby reducing the resistance of the fluid.

As shown in FIG. 1, three fluid guiding grooves 40 are formed on the rear and rear end surfaces of the cylindrical shape of the rear portion of the warhead so as to extend over the rear and rear end surfaces of a cylindrical shape, The end portions of the fluid guiding grooves 40 located at the end surfaces of the warhead are spaced apart from the center of the end surface after the warhead by a predetermined distance, The fluid guiding groove 40 uniformly induces the flow of the fluid toward the center of the anvil when the warhead is flying in the air or underwater, thereby preventing the warhead from shaking and allowing stable flight in the air or water.

As shown in FIG. 2, a hemispherical groove 41 whose center is aligned with the center of the section after the warhead is formed between the center of the section after the warhead and the three fluid guiding grooves 40 by being inserted in front of the warhead In the present invention, the hemispherical groove 41 is formed at the center of the cross section after the warhead so that the high-pressure gas generated when the ammunition explodes in the projectile enters the hemispherical groove, To obtain a more uniform and powerful thrust force. As a result, it was confirmed that the effective range is increased as compared with the case of forming a circular groove.

The inventors of the present invention fabricated the warhead of the present invention having the above-described structure and performed the launch test. As a result, when the rear end of the warhead was formed into a cylindrical shape having the same diameter, It was confirmed that the scratched portion was generated only in the front portion of the round barrel, and this means that the explosive force of the ammunition is not effectively transmitted to the warhead, and the inventor of the present invention has found that the cylindrical barrel The test was carried out again after the rear end of the warhead was formed so as to be inclined by about 1 to 5 degrees outwardly with respect to the tangent of the cylinder. The test result was again shown in Fig. 4 (a, b) The warhead of the warhead in which the warp portion is formed is formed more favorably than the warhead in which the warhead is not formed Between the acceleration is increased it can be seen that the tansok was confirmed that the faster growing, as well as improving the accuracy of the warhead case of forming an inclined aft part of the warhead from which increases the effective range.

On the other hand, when manufacturing a bullet of a helmet used to penetrate gloves such as tanks and armored vehicles, a bullet made of a hard metal such as tungsten or tungsten alloy is applied to the outer circumferential surface of the bullet to form a warhead At this time, a space is formed between the taner and the tanzai in the direction of the center line of the warhead, and when the warhead is hit by the target, the tanzai blood of the copper material is opened by the impact force, and the tanzai When a space is formed between the taner and the bulge, the bullet is subjected to compressive force during the passage of the bullet or the bullet, so that the initial shape of the bullet can not be maintained, but is deformed while being slightly compressed. Thereby causing a problem that the accuracy is degraded.

In order to prevent the bulge from being deformed at the time of launching, the bulge is made of stainless steel. In this case, the amount of warping of the bulge is reduced, but the weight of the front of the bullet is increased, Not only does this fall, but it also consumes more energy to make the bullet wander, which reduces the flying energy of the torso and ultimately creates another problem that the penetration of the torso into the glove is reduced.

Therefore, in order to enhance the penetration performance of the warhead and maintain the accuracy, the warhead is manufactured as a combination type in which the front assembly 100 and the rear fixture 200 are coupled to each other as shown in FIGS. 5 to 7, For this purpose, the front assembly 100 is made of a hard metal such as a manganese-molybdenum alloy or a tungsten alloy, which has a larger specific gravity than the copper alloy and has a higher hardness and strength. Thus, even if the front assembly 100 strongly hits a target such as a glove, As shown in FIG. 8, the center of gravity CG1 moves toward the forward center CG2 of the warhead in comparison with the conventional warhead when the warhead is flying through the fluid, The distance between the center of gravity (CP) and the center of gravity (CG2) is reduced. As a result, the size of the wedge angle (CA) Which at the same time, the accuracy is improved as well as improving the flight stability since the reduced resistance, the turning force and thrust of the warhead is increased with this increase is a destructive and effective range.

As shown in FIGS. 5 and 6, the front assembly 100 includes an insertion portion 110 having a cylindrical shape and inserted through the interior of the rear fixture 200, The first bubbling groove 121 and the second bubbling groove 122 are formed in the protrusion 120 in order from the front side to the rear side of the protrusion 120, At the rear of the bubbling groove 122, an inclined portion is formed.

The front assembly 100 is inserted into the through hole 210 of the rear fixing unit 200 to fix the rear fixing unit 200 to the rear fixing unit 200. [ The insertion hole 110 is protruded toward the rear of the front assembly 100 and the fixing hole 111 is pressed by using a pressing tool so that the fixing hole 111 is opened to the outside, The rear fixing body 200 is firmly coupled.

As shown in FIG. 7, the rear fixing body 200 integrally formed with the front assembly 100 by inserting and inserting the insertion portion 110 of the front assembly 100 into the interior of the front assembly 100 has a trapezoidal shape in section And a rear portion of the rear fixing body 200 is formed into a cylindrical shape and a conical portion of the rear fixing body 200 is formed with a tapered portion at an angle equal to that of the inclined portion of the front assembly 100, A step is not formed between the front assembly 100 and the rear fixture 200 when the front assembly 100 and the rear fixture 200 are coupled to each other.

A through hole 210 is formed in the rear fixture 200 so as to pass through the front end and the rear end of the rear fixture 200. An insertion portion 110 of the front assembly 100 is inserted into the through hole 210, Are tightly inserted and joined together.

In addition, a tertiary bubbling groove 220 is formed on the outer circumferential surface of the intermediate portion in the longitudinal direction of the cylindrical rear fixed body 200, and three fluid guiding grooves 230 are formed radially on the rear end thereof .

At this time, the tapered portion is formed to have a slope that naturally extends with the conical protrusion 120 of the front assembly 100, thereby facilitating the penetration of the bullet through the medium, and the fluid guide groove 230 ) Serves to stabilize flight by preventing bullet shaking by guiding the air flow uniformly toward the center of the anchor when the bullet is fired, and also by reducing turbulence by forming turbulence.

As described above, according to the present invention, by forming a plurality of bubbling grooves on the outer circumferential surface of the warhead, it is possible to improve the accuracy in air and water and to improve the effective range, and also to secure the penetration performance by manufacturing the warhead in a prefabricated manner Accuracy and effective range can be improved.

1: Body 10: Primary bubbling home
20: secondary bubbling groove 30: tertiary bubbling groove
40: fluid guiding groove 41: groove
100: front assembly 110:
111: Fixing hole 120: Projection
121: primary bubbling groove 122: secondary bubbling groove
200: Rear fixture 210: Through hole
220: tertiary bubbling groove 230: fluid guiding groove
A: tip B: first extension
C: 2nd extension part CA:
CG1, CG2: center of gravity CP: center of pressure
d: diameter L: horizontal distance

Claims

In the warhead of which the front part is conical and the rear part is cylindrical,
A primary bubbling groove 10, a secondary bubbling groove 20 and a tertiary bubbling groove 30 are formed in order from the forward end of the warhead, and three fluid guiding grooves 40 are formed at the trailing end thereof in the rear and back Sectional view,
The width and the depth of the primary bubbling groove 10 and the secondary bubbling groove 20 and the tertiary bubbling groove 30 are set so as to become larger from the primary bubbling groove 10 to the tertiary bubbling groove 30 And,
Each of the fluid guiding grooves 40 is formed to be inclined at the same direction and angle with respect to a straight line passing through the center of the post-warp cross section, and the ends of the fluid guiding grooves 40 are spaced apart from the center of the cross- Respectively,
Wherein a hemispherical groove (41) is formed inwardly between the three fluid guiding grooves (40) and the center of the cross section of the rear end of the warhead.

delete

The method according to claim 1,
The horizontal distance L between the primary bubbling groove 10 and the secondary bubbling groove 20 has a length corresponding to 1 to 2 times the diameter d of the primary bubbling groove 10 Which has improved accuracy.

The method according to claim 1,
Wherein the trailing end of the cylindrical warhead portion is inclined outwardly by 1 to 5 degrees with respect to the tangent of the cylinder.

The method according to claim 1,
Wherein the sectional shape of the primary bubbling groove (10), the secondary bubbling groove (20) and the tertiary bubbling groove (30) is a "V" shape.

A front assembly 100 including an insertion portion 110 having a cylindrical shape and a protrusion 120 having a conical shape formed on a front side of the insertion portion 110;
A through hole 210 through which the insertion part 110 is inserted is formed at the center of the inner part, a front part of the rear fixing part 200 is formed in a conical shape having a trapezoidal sectional shape, Are integrally assembled,
The protrusion 120 is formed with a primary bubbling groove 121 and a secondary bubbling groove 122 in order from the front side to the rear side,
A third bubbling groove 220 is formed on an outer circumferential surface of an intermediate portion of the rear fixing body 200 in a longitudinal direction of the rear fixing body 200. The third bubbling groove 220 is spaced apart from the center of the rear end surface of the rear fixing body 200 by a predetermined distance, (230) is formed,
A fixing hole 111 is formed inwardly in the rear end surface of the insertion portion 110 toward the front,
The front assembly 100 and the rear fixture 200 are inserted into the through hole 210 of the rear fixing body 200 so that the insertion portion 110 of the front assembly 100 is inserted into the through hole 210 of the rear fixing body 200, Wherein the fastening holes are engaged with each other by pressing the fastening holes (111) in the assembled state so as to protrude toward the rear side of the rear fixing body (200) so as to spread outward.

delete

The method of claim 6,
Wherein the front assembly (100) comprises a manganese-molybdenum alloy or a tungsten alloy.