KR102106402B1 - Practice Shell for Firing Exercise of Tank - Google Patents

Abstract

A casing 20 filled with a propellant therein; In the training bullet for tank shooting training, which is coupled to the front of the casing 20 so as to be fired by the combustion pressure of the propellant, and includes a warhead assembly 10 that generates a fragment by colliding with a target,
The warhead assembly 10 includes a body 11 having an interior space; A spike member 12 coupled to the front of the body 11 to collide with the target; A rear stopper 13 coupled to the rear of the body 11 to be coupled to the front of the casing 20; A filling material (15) filling the inner space of the body (11) and crushing the body (11) using pressure when colliding with a target; A guide ring 14 coupled to the outside of the rear end of the body 11 so as to be coupled to the steel wire of the tank muzzle, so that the warhead assembly 10 rotates in flight upon launch; Including, the spike member 12 is formed of a steel material, the body 11 is formed of a light metal material is characterized in that the center of gravity is located in the front.

Description

Training Shell for Firing Exercise of Tank

The present invention relates to a training shot for tank shooting training used for shooting training of a tank, and more specifically, by shifting the center of gravity of the warhead assembly to the front side, changing the structure to enable stable flight without applying wings. It is about tank fire training grenade that can simplify and reduce the production cost.

In general, a tank means a combat vehicle equipped with a powerful propulsion engine and a driving device capable of maneuvering even in a field without roads in a body protected by heavy armor and equipped with a powerful gun or machine gun.

These tanks are equipped with guns for the killing of horses and the destruction of armored vehicles, and these guns are proportionally larger in diameter as armored vehicles such as armored vehicles or tanks become thicker.

In addition, since it is not easy to defeat the target using the guns provided in the tank, the tankers operating the tanks are performing shooting training using the guns. In these shooting exercises, it is common to use practice ammunition instead of combat ammunition with explosives. These practice grenades have an internal structure modified to have the same external shape and weight as combat ammunition to enable efficient shooting training, while explosive materials such as gunpowder are removed to conduct safe shooting training.

However, most of the practice bullets are made of a material that does not crush, such as steel, so that when shooting, they are separated by large fragments from the parchment after being impacted on the target. This is causing the situation.

On the other hand, when launching a shell, the flight stability of the warhead uses the rotational stability method by the steel wire or the wing stability method using the wings provided at the tail of the warhead, and most of the ammunition used in the tank uses the flight stability method by the wing. I am using it. Therefore, even in the case of a practice grenade, the wings are assembled at the tail of the warhead assembly, and these wings are the core parts that provide flight stability when the warhead assembly is flying.

However, the wing provided in the warhead assembly has a problem in that the manufacturing process is complicated and the production cost is large due to its structure, and it also causes damage to the public and civil damage by being fired to a long distance after being hit at the target during shooting.

On the other hand, as a result of investigating the prior art related to the present invention, a number of patent documents have been searched, and some of them are as follows.

Patent Document 1, a branch pipe having a size that can be inserted into a hollow hole of a 155mm carbon body is fused to the upper fuselage; The lower outer surface is fixed to the upper portion of the branch pipe, and the lower inner surface is provided with a stepped portion spaced apart from the bottom surface, and the upper portion is inserted into the smoke release cup and the smoke release cup, which is spirally coupled with the fuse at the upper portion of the hollow body hole. As the lower portion is seated on the stepped portion, it is possible to arrange a buffer material between the bottom surface with the smoke-release cup, and the inside is made of a smoke-forming module, in which a smoke-filling agent is filled, and a pellet module including a pellet-like high explosive agent is fitted on the top. Containing a smoke release cup assembly, the central portion of the bottom surface of the smoke release cup is formed by a groove and a circular pressure hole communicating with the groove sequentially in the downward direction, so that when the fuse is operated and destroyed, it is hollow without damaging the body. Disclosed is a 155MM practice munition that allows the smoke agent to be released outside the hole.

Patent Document 2 is formed in a streamlined form that is less resistant to air, but is mounted on the fuselage body and restricts the fuselage operation so that it does not explode even when a falling due to careless knobs and careless handling for the practice of manipulation of the fuselage and explosive fuses It has the function of a primary safety device and separates and accommodates the sinking knob and the striking rod so that the sinking strikes the detonator accurately even when the shooting hits the safety pin spring and the practice bomb that strikes the landing post after flight. By using the sinking guide, the new rod, and the elastic member to restrain the sinking from being coincident, to prevent the explosion caused by the detonation of the detonator primer, and to operate by the setback when firing, the sinking is aligned with the detonator to be loaded. A fuse assembly characterized in maintaining a state; A carbon-bonded body coupled to the fuse-bonded body; A wing coupling body coupled to the carbon body assembly and configured to fly the carbon body assembly and the fuse assembly to the landing site; A primer assembly mounted on the inside of the wing assembly and ignited by the explosion of a primer by the mortar's ball; Charges coupled to the circumference of the wing assembly; Including, environmentally friendly long- and short-range mortars are being practiced.

Patent Document 3, a warhead and a body disposed under the warhead and crushed by collision energy due to collision with a target, and a body damaged by the impact due to launch before the body collides with the target Disclosed is a liner formed to have a structure surrounding the body so as to prevent, and to prevent damage to the body from the impact caused by the launch, the launcher for steel wire gun.

Patent Document 4, the body case having an inner space, the spike assembly coupled to the front end of the body case and colliding with the target, the wing assembly coupled to the rear end of the body case, the body case to seal the inner space of the body case It comprises a combined front plug and a rear plug and a first inert reactant that is formed of a material of low density and has powders filled in the interior space of the body case. Disclosed is a tank for training tanks equipped with an inert reactant, which can be reduced and minimized damage due to debris.

Patent Document 1: KR10-2011-0136538 A Patent Document 2: KR10-2013-0104362 A Patent Document 3: KR10-2013-0123045 A Patent Document 4: KR10-2017-0126709 A

The present invention has been devised to solve the problems of the prior art, by reducing the wing provided on the warhead assembly and enabling flight stability by the center of gravity, reducing manufacturing costs and preventing public damage and civil complaints due to training expenses. The aim is to provide a train shot for tank fire training, which ensures practical training conditions.

The present invention for achieving the above object, the casing is filled with a propellant therein; In the training shot for tank fire training, which is coupled to the front of the casing to be fired by the combustion pressure of the propellant and includes a warhead assembly that collides with a target to generate fragments,

The warhead assembly, the body having an interior space; A spike member coupled to the front of the body to collide with a target; A rear stopper coupled to the rear side of the body to be coupled to the front side of the casing; A filling material filling the inner space of the body and crushing the body using pressure when colliding with a target; A guide ring coupled to the outside of the rear end of the body so as to be coupled to the steel wire of the tank muzzle, so that the warhead assembly rotates when launched; Including, the spike member is formed of a steel material and the body is formed of a light metal material characterized in that the center of gravity is located in the front.

In addition, according to the training shot for tank shooting of the present invention, the body includes a cylindrical body case and a front plug and a rear plug respectively coupled to the front and rear of the body case to seal the inside of the body. It is characterized by.

In addition, according to the training shot for tank fire training of the present invention, the filling is formed of an iron powder molded body and filled in the molded body case, and the front plug and the rear plug seal the front and rear of the molded body case, and the body case It characterized in that the lining member is interposed between the case and the molded body.

In addition, according to the training shot for tank fire training of the present invention, the filling is characterized in that it is charged to the inside of the spike member.

In addition, according to the training shot for tank shooting of the present invention, the spike member includes a front fastening part coupled to the front of the body, and a front protrusion protruding from the center of the front fastening part formed with a smaller diameter than the body. It is characterized by.

In addition, according to the training shot for tank shooting training of the present invention, it is characterized in that the notch in the circumferential direction is formed on the rear end side of the front projection.

In addition, according to the training bullet for tank shooting training of the present invention, the rear stopper is characterized in that it is directly coupled to the front of the casing or the rear end is inserted into the form of being inserted into the casing.

The training shot for tank shooting training of the present invention simplifies the manufacturing process as the center of gravity of the warhead assembly flying toward the target when firing from the tank is positioned at the front and can stably fly, but does not have wings at the rear of the warhead assembly. And it has the effect of reducing the production cost.

In addition, according to the training shot for tank shooting training of the present invention, the body of the warhead combination is formed of light metal and crushed by the pressure of the molded body at the time of evacuation, so that no dobby phenomenon occurs, thereby preventing damage and complaints caused by dobitan There is.

In addition, according to the training shot for tank shooting training of the present invention, since the filling is filled in the molded body case and is accommodated in the body case through the lining member in a closed state by the front plug and the rear plug, the body manufacturing process is simplified. There is.

In addition, according to the training shot for tank shooting training of the present invention, as the front protrusion is provided on the spike member, the resistance due to the flight of the warhead assembly is reduced, thereby increasing the range.

In addition, according to the training shot for tank shooting of the present invention, as the notch is formed on the outer surface of the front projection, the front projection may be crushed into relatively small fragments when colliding with the target, as well as the notch (or notch) It has the effect of making the machining work easier.

In addition, according to the training shot for tank shooting training of the present invention, as the filling material is charged to the inside of the spike member, the spike member is easily crushed by the pressure of the filling material, thereby reducing the scattering area of the debris.

In addition, according to the training shot for tank shooting training of the present invention, the same crushing pressure is applied at the same range by changing the structure of the rear stopper so as to maintain a constant amount of filling regardless of the type of warhead combination, regardless of the type It has the effect that the warhead assembly is sufficiently crushed.

Figure 1 is a schematic view showing a practice shot for tank shooting training according to the present invention.
Figure 2 is a partial cut-away perspective view showing a warhead assembly of the tank training drill for training according to the present invention.
Figure 3 is a cross-sectional view showing an embodiment of a warhead assembly according to the present invention.
Figure 4 is a reference diagram showing the flying state of the warhead assembly according to the present invention.
5 is a graph showing the dispersion degree of debris according to temperature in a training shot for tank shooting according to the present invention.
Figure 6 is a reference diagram showing the debris shape of the training rifle for tank shooting training according to the present invention.

Hereinafter, with reference to the accompanying drawings, a description will be given of a training shot for tank shooting training of the present invention.

As shown in Figures 1 to 3, the train shot for tram shooting training according to the present invention includes a casing 20 filled with a propellant therein; A warhead assembly 10 coupled to the front of the casing 20 to be fired by the combustion pressure of the propellant and colliding with the target to generate fragments; It is made including.

And the warhead assembly 10, the body 11 having an internal space and; A spike member 12 coupled to the front of the body 11 to collide with the target; A rear stopper 13 coupled to the rear of the body 11 to be coupled to the front of the casing 20; A filling material (15) filling the inner space of the body (11) and crushing the body (11) using pressure when colliding with a target; A guide ring 14 coupled to the outside of the rear end of the body 11 so as to be coupled to the steel wire of the tank muzzle, so that the warhead assembly 10 rotates in flight upon launch; It includes.

The spike member 12 is formed of a steel material and the body 11 is formed of a light metal material such as aluminum, so that the center of gravity is located in the front, so that flight stability is maintained by the center of gravity located in the front.

And the body 11 has a cylindrical body case (11a), and the front plug (11c) and the rear plug (11d) are respectively coupled to the front and rear of the body case (11a) to seal the interior of the body (11) Includes.

 In addition, the spike member 12 is a front fastening portion 12b coupled to the front of the body 11 and a front protrusion protruding from the center of the front fastening portion 12b formed with a smaller diameter than the body 11 ( 12a), it is preferable that the notch 12c in the circumferential direction is formed on the rear end side of the front protrusion 12a. It is more preferable that the notch portion 12c is formed on the outer circumferential surface of the front protrusion 12a to facilitate processing.

In addition, the filler 15 is preferably formed of an iron powder molded body and filled in the molded body case 16. In this case, the front plug 11c and the rear plug 11d are configured to seal the front and rear of the molded body case 16, and a lining member 11b is interposed between the body case 11a and the molded body case 16. It is more preferable to be.

In addition, the filling 15 may be charged only to the interior of the body 11 as shown in FIG. 3 (a), and charged to the interior of the spike member 12 as shown in FIG. 3 (b). It may be. Hereinafter, the warhead assembly 10 in which the filler 15 is charged only inside the body 11 is referred to as a 'warhead model type 1', and the warhead assembly in which the filler 15 is charged to the inside of the spike member 12 ( 10) is called 'warhead model type 2'.

In addition, the rear stopper 13 may be directly coupled to the front of the casing 20 or the rear end may be combined to be inserted into the casing 20. That is, in the warhead model type 2, the rear stopper 13 is directly coupled to the front of the casing 20, and in the warhead model type 1, the rear stopper 13 is coupled to the inside of the casing 20. This is to keep the amount of the filler 15 constant regardless of the type of warhead assembly 10.

Shooting training was conducted using the tank shooting training grenade of the present invention configured as described above to confirm the result.

At this time, when comparing the specifications of the training rifle for tank shooting training according to the present invention with the conventional rifle and actual ammunition, Table 1 below is provided.

That is, the total length of the completed munitions is the same as that of the conventional practice munitions or actual ammunition, but in the case of weight, it can be increased further. The test conditions were also set in the same way.

While increasing the dose of propellant at the time of test shooting by 250 g, the average muzzle velocity and the average chamber pressure were measured, and the deviation was calculated to evaluate the safety. The results are shown in Table 2 below.

Referring to Table 2, in the case of the warhead model type 1, if the propellant dose is 5250g, the average muzzle velocity is 1131m / s, the average chamber pressure is 50833psi, and the average muzzle velocity is below the standard value and the propellant dose is 5500 It can be seen that the mean muzzle velocity is 1181.4 m / s and the average chamber pressure is 58267 psi, which satisfies the reference condition. However, considering that the manufacturing cost increases as the amount of the propellant increases, it is judged that it is desirable to set the predicted dose of the warhead model 1 to 5458.3 g, so that the expected chamber pressure is 56963 psi.

In the case of the warhead model type 2, if the propellant dose is 5250g, the average muzzle velocity is 1130.2m / s, the average chamber pressure is 48400psi, and the average muzzle velocity is below the standard value, and when the propellant dose is 5500, the average muzzle velocity Is 1176.4 m / s and the average chamber pressure is 54033 psi, which can be seen to satisfy the reference condition. However, considering that the production cost increases as the amount of the propellant increases, and it should have the same performance as the warhead model 1, it is also recommended that the predicted chamber pressure of the warhead model 2 is 5458.3g, so that the expected chamber pressure is 56963psi. It is considered desirable.

In addition, a test was conducted to determine the flight characteristics and structural safety of the warhead assembly constituting the exercise munition according to the present invention, and to check the structural safety of the warhead assembly at high and low temperatures, a super high-speed camera was installed at a point 10 m in front of the muzzle. As a result of installing and photographing the warhead assembly, it is shown in FIG. 4. That is, it was confirmed that both the warhead model type 1 and the warhead model type 2 fly normally without damage to metal parts regardless of high temperature or low temperature.

In addition, in order to evaluate the performance of the exercise grenade of the present invention, the degree of dispersion at a point of approximately 2 km from the muzzle was evaluated. As a result, the dispersion degree as shown in Table 3 and FIG. 5 was shown.

With reference to this, in the case of the warhead model type 1, the dispersion degree requirement (0.24 × 0.24 mil) was satisfied at room temperature, but the dispersion degree at the high temperature was 0.32 mil, and the dispersion degree at the low temperature was 0.30 mil. It can be seen that is not satisfied. However, it has been confirmed that the warhead model type 2 satisfies all dispersion requirements regardless of temperature. Therefore, it is judged that the warhead model type 2 is more suitable than the warhead model type 1 in the high temperature condition or the low temperature condition.

In addition, as a result of installing the cradle at the impact point and collecting debris around the cradle to confirm the impact characteristics of the impact, the results shown in FIG. 6 were obtained. Specifically, the debris recovery rate was confirmed to be approximately 63% in both models, which is believed to be due to the fact that a part of the fracture surface was scattered between the cradles and could not be recovered as the warhead was not accurately hit at the target. As a result of confirming the debris, it was confirmed that the fragments of the warhead model type 2 were larger than those of the warhead model type 1, and the spike members of the warhead model type 2 were easily damaged, so that the spike member and the iron powder molded body inside the body were sufficiently formed. It is believed to have occurred due to failure to crush. Therefore, it was confirmed that in the case of the warhead model type 2, it is more preferable to form the spike member so that it is not easily damaged.

In addition, as a result of confirming the impact point at the target point in order to confirm the trajectory characteristics of the practice munition, the results shown in Table 4 below were obtained.

According to Table 4, it was confirmed that both the warhead model type 1 and warhead model type 2 and the comparable KM490 shells formed similar impact groups, and that the warhead model type 2 was more similar to the KM490 shell and ballistic characteristics than the warhead model type 1 Became.

In addition, to determine whether the existing shooting specification table can be applied to the practice grenade of the present invention, and to analyze the difference between the ultra-high angle and the upper and lower impact positions for each main range in order to secure the consistency of the shooting specification table, the results are shown in Table 5 below. Was able to get.

According to Table 5, the maximum ultra-high angle difference within the effective range of 2㎞ in the state of acquiring the zero point of the grenade is 0.3mil and 0.33mil, respectively, in the warhead model type 1 and type 2, and the difference in the impact position is 0.589. It can be seen that m and 0.648m. In addition, it can be seen that the maximum ultra-high angle difference is 0.53 mil and 0.67 mil at the distance of 3.2 km within 3.6 km, which is a long range shooting distance of the K1 tank, and the difference in the impact position is 1.664 m and 2.104 m, respectively. Therefore, when the two types of warhead models of the training munitions according to the present invention obtained a zero point by applying the M456 shooting specifications table, the difference in the impact position due to the ultra-high angle up to 3.6㎞, the long-range shooting of the K1 tank, was within 2.2m of the vehicle height. Therefore, it was judged that it is possible to operate.

As described above, although it has been described and illustrated in connection with an embodiment for illustrating the technical idea of the present invention, the present invention is not limited to the configuration and operation as described above, and deviates from the scope of the technical idea described in the specification. It will be understood by those skilled in the art that many changes and modifications to the present invention are possible without. Accordingly, all such suitable changes and modifications and equivalents should be considered to be within the scope of the present invention.

10 ... warhead assembly
11 ... body
11a ... body case
11b ... without lining
11c ... front plug
11d ... rear plug
12 ... no spike
12a ... front protrusion
12b ... front coupling
12c ... notch
13 ... rear stopper
14 ... Guide ring
15 ... filling
16 ... filling case
20 ... casing

Claims (7)

A casing 20 filled with a propellant therein; In the training bullet for tank shooting training, which is coupled to the front of the casing 20 so as to be fired by the combustion pressure of the propellant, and includes a warhead assembly 10 that generates a fragment by colliding with a target,
Warhead assembly (10),
A body 11 having an interior space;
A spike member 12 coupled to the front of the body 11 to collide with the target;
A rear stopper 13 coupled to the rear of the body 11 to be coupled to the front of the casing 20;
A filling material (15) filling the inner space of the body (11) and crushing the body (11) using pressure when colliding with a target;
A guide ring 14 coupled to the outside of the rear end of the body 11 so as to be coupled to the steel wire of the tank muzzle, so that the warhead assembly 10 rotates in flight upon launch;
It comprises,
The spike member 12 is formed with a smaller diameter than the front fastening part 12b coupled to the front of the body 11 and a body 11, protruding from the center of the front fastening part 12b, and at the rear end side. The outer surface is made of a front projection (12a) with a notch (12c) processed,
The spike member 12 is formed of a steel material, while the body 11 is formed of a light metal material, so that the center of gravity of the warhead assembly 10 is configured to be positioned in the front, so that the flight stability wing-removing tank shooting training is performed. Dragon practice grenade. The method according to claim 1,
The body 11 includes a cylindrical body case 11a and a front plug 11c and a rear plug 11d which are respectively coupled to the front and rear of the body case 11a to seal the inside of the body 11. Characteristic of the flight stabilization wing removable tank shooting training. The method according to claim 2,
The filling 15 is formed of an iron powder molded body and filled in the molded body case 16,
The front plug 11c and the rear plug 11d seal the front and rear of the molded body case 16,
The training case for the flight stabilization wing type tank shooting training, characterized in that a lining member (11b) is interposed between the body case (11a) and the molded case (16). The method according to claim 1,
A flight stabilizer wing-removal tank shooting training munition, characterized in that the filling (15) is charged to the inside of the spike member (12). The method according to claim 4,
The rear stopper (13) is a flight stabilizer wing-removing tank shooting training fighter, characterized in that it is directly coupled to the front of the casing (20) or the rear end is inserted into the casing (20). delete delete

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