Light-gas gun loading-based dynamic explosion shock wave effect simulation device and method

Abstract

The application discloses a light gas gun loading-based dynamic explosion shock wave effect simulation device and method, and aims at solving the problems that the prior art cannot accurately control the initial velocity of ammunition and cannot make the ammunition explode at a predetermined position. Specifically, the device comprises a light gas gun, a shell support arranged at the outgoing end of the light gas gun, a shell embedded in the shell support, and a large coil arranged at a predetermined position and corresponding to the outgoing end of the light gas gun. The light gas gun is used for emitting high-pressure gas to push the shell support and the shell in the shell support to pass through the large coil. The shell comprises a small coil, a detonator and ammunition. The two ends of the small coil are respectively connected with the lead wires led out from one end of the detonator. The other end of the detonator is connected with the ammunition and used for detonating the ammunition. The large coil is connected with a high-voltage power supply.

Description

Technical Field

[0001] This invention relates to a device and method for simulating shock wave effects, specifically to a device and method for simulating dynamic detonation shock wave effects based on a light gas gun loading. Background Technology

[0002] The dynamic detonation shock wave effect refers to the shock wave effect generated by the explosion of ammunition during its motion. In practical applications, to avoid interception, ammunition typically achieves penetration at high speed and then explodes in motion, causing damage to the target. The difference between the shock wave fields of dynamic and static detonations lies in the different overpressures of the shock waves in different directions. When assessing power, relying solely on the results of static detonation tests is clearly insufficient for evaluating the power field, while precise measurement is inconvenient during actual explosions. Therefore, developing laboratory simulation methods for the dynamic detonation shock wave effect is not only beneficial for reconstructing and analyzing the dynamic detonation shock wave field but also of paramount importance for the analysis of the ammunition's power field.

[0003] For laboratory simulation methods of dynamic detonation shock wave effects, existing techniques have utilized smoothbore cannons to conduct dynamic detonation tests on spherical charges and measured shock wave pressure-time history curves at several typical angles. However, laboratory simulation techniques based on smoothbore cannon loading cannot precisely control the initial velocity of the ammunition, making it difficult to simulate real-world conditions. Therefore, accurately loading the charge to achieve a specific initial velocity and detonating it at a predetermined location is one of the key technologies in laboratory simulation methods of dynamic detonation shock wave effects. Summary of the Invention

[0004] The purpose of this invention is to provide a device and method for simulating the dynamic detonation shock wave effect based on a light gas gun, so as to solve the technical problems that the existing technology cannot accurately control the initial velocity of the ammunition and cannot make the ammunition explode at a predetermined position.

[0005] To achieve the above objectives, the present invention provides a dynamic explosion shock wave effect simulation device based on a light gas gun loading, which is characterized by including a light gas gun, a projectile mounted at the firing end of the light gas gun, a projectile embedded in the projectile, and a large coil mounted at a predetermined position and corresponding to the firing end of the light gas gun.

[0006] The light gas gun is used to fire high-pressure gas to propel the sabot and the projectile inside through the large coil.

[0007] The projectile body includes a small coil, a detonator, and ammunition; both ends of the small coil are connected to leads extending from one end of the detonator; the other end of the detonator is connected to the ammunition for detonating the ammunition.

[0008] The large coil is connected to a high-voltage power supply.

[0009] Furthermore, both the sabot and the projectile body are cylindrical;

[0010] The sabot includes two bullet sabots;

[0011] A projectile mounting cavity is provided between the two bullet holders. The end of the projectile mounting cavity closer to the light air gun is closed, and the end farther from the light air gun is open.

[0012] The inner wall of the projectile mounting cavity is a stepped surface, which makes the projectile mounting cavity form a large mounting cavity and a small mounting cavity that are interconnected; the ammunition is placed in the large mounting cavity; the portion of the small coil and detonator outside the ammunition is placed in the small mounting cavity.

[0013] Furthermore, the end of the detonator furthest from the small coil is inserted into the ammunition;

[0014] The ammunition is positioned on the side closest to the large coil.

[0015] Furthermore, it also includes camera structures;

[0016] The camera is mounted on one side of the preset detonation position of the corresponding ammunition and is used to capture the scene when the ammunition is detonated.

[0017] Furthermore, both the large coil and the small coil are copper coils.

[0018] Furthermore, both the sabot and the projectile are installed inside the barrel of the light air gun.

[0019] Furthermore, the ammunition is a TNT charge.

[0020] Meanwhile, the present invention also provides a method for simulating the dynamic detonation shock wave effect based on light gas gun loading, for use in the aforementioned dynamic detonation shock wave effect simulation device based on light gas gun loading, characterized in that it includes the following steps:

[0021] Step 1: Connect a high-voltage power supply to the large coil to generate a strong magnetic field inside the large coil;

[0022] Step 2: The light gas gun fires high-pressure gas, and the sabot and the projectile inside are propelled by the high-pressure gas toward the large coil.

[0023] Step 3: The sabot decomposes and deviates from the trajectory under the action of the airflow, and the projectile continues to be fired towards the large coil along the direction of the initial velocity;

[0024] Step 4: When the small coil connected to the lead wire of the detonator passes through the strong magnetic field, it generates electromotive force and current, which excites the detonator to detonate the ammunition, generating a dynamic detonation shock wave in the free field of air.

[0025] Furthermore, step 4 also includes:

[0026] Cameras were used to capture footage of the munitions being detonated for explosion data analysis.

[0027] The beneficial effects of this invention are:

[0028] 1. In this invention, a small coil is connected to both ends of the lead wire of the detonator, the detonator is inserted into the rear end of the ammunition and fixed, and a large coil is placed at a predetermined position and a high voltage current is passed through it. The large coil generates a strong magnetic field, and then the detonator and ammunition can be launched based on a light air gun. The small coil at the rear end of the detonator cuts the magnetic field lines of the large coil to generate an induced electromotive force and current, thereby stimulating the detonator to detonate the ammunition and produce a dynamic explosion effect.

[0029] 2. The present invention is based on a dynamic detonation shock wave effect simulation device using a light gas cannon. It can precisely control the initial velocity of the ammunition by controlling the gas pressure of the light gas cannon, thereby improving the operability of the experiment.

[0030] 3. This invention enables the ammunition to explode in a free field of air by setting up large and small coils, generating a dynamic detonation shock wave. The experimental scenario is closer to the actual use scenario, which can provide more accurate explosion data for subsequent research. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of an embodiment of the dynamic detonation shock wave effect simulation device based on a light gas cannon loading according to the present invention;

[0032] Figure 2 This is a schematic diagram of the installation structure of the two bullet supports and the bullet body in an embodiment of the present invention;

[0033] Figure 3 This is a schematic diagram of the structure of the projectile in an embodiment of the present invention.

[0034] Icon labels:

[0035] 1-Light gas cannon, 2-Shipstock, 21-Shootstock, 22-Large mounting cavity, 23-Small mounting cavity, 3-Projectile body, 31-Small coil, 32-Detonator, 33-Ammunition, 4-Large coil, 5-High voltage power supply. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] To accurately load explosive charges to a specific initial velocity and detonate them at a predetermined location, achieving a laboratory simulation of the dynamic detonation shock wave effect, this embodiment proposes a dynamic detonation shock wave effect simulation device based on a light gas cannon. A cylindrical projectile, detonator, and small coil are launched from a light gas cannon. When the cylindrical projectile, detonator, and small coil pass at high speed through the strong magnetic field generated by a large coil positioned at a predetermined location, they cut magnetic field lines, generating induced electromotive force and current, which in turn excites the detonator to detonate the projectile, thus producing a dynamic detonation effect.

[0038] A device for simulating the dynamic detonation shock wave effect based on a light gas gun loading, combined with Figure 1 and Figure 3 As shown, Figure 1 From left to right, the components are: a light gas cannon 1, a sabot 2, a detonator 32 containing a copper coil with an iron core (i.e., a small coil 31), a cylindrical projectile 33, a copper coil (i.e., a large coil 4), and a camera mechanism. The large coil 4 is connected to a high-voltage power supply 5. The light gas cannon 1 is used to eject high-pressure gas to propel the sabot 2 and its internal projectile 3 through the large coil 4; the camera mechanism is used to capture the scene when the projectile 33 is detonated. The sabot 2, the small coil 31, the detonator 32, and the projectile 33 are all installed inside the barrel of the light gas cannon 1; the large coil 4 is located outside the barrel of the light gas cannon 1 and corresponds to the barrel muzzle.

[0039] like Figure 2 As shown, the sabot 2 is used to house the small coil 31, detonator 32, and ammunition 33, and is compatible with the barrel caliber of the light gas cannon 1. To accommodate the shapes of the detonator 32 and ammunition 33 and achieve concentricity with the barrel caliber, the sabot 2 adopts a split stepped structure. Specifically, the sabot 2 includes two projectile sabots 21; a projectile mounting cavity is provided between the two projectile sabots 21, with the end of the projectile mounting cavity near the light gas cannon 1 being closed and the end away from the light gas cannon 1 being open; the inner wall of the projectile mounting cavity is a stepped surface, forming a large mounting cavity 22 and a small mounting cavity 23 that are interconnected; the ammunition 33 is placed in the large mounting cavity 22; the small coil 31 and detonator 32 are placed in the small mounting cavity 23. The end of the detonator 32 away from the small coil 31 is inserted into the ammunition 33; the ammunition 33 is positioned on the side closer to the large coil 4. When the sabot 2 moves inside the barrel of the light gas cannon 1, the small coil 31, detonator 32, and ammunition 33 are a single unit. When the sabot 2 is driven outside the barrel, the unconstrained sabot 2 disintegrates into two sub-sabots 21 under the action of the high-speed airflow. The front end of the detonator 32 is inserted into the rear end of the ammunition 33 to detonate it. When the small coil 31 passes through the strong magnetic field formed by the large coil 4, the small coil 31 at the rear end of the detonator 32 generates a current, exciting the detonator 32. The ammunition 33 at the front end is a TNT charge with a cylindrical structure, and detonates at the rear end.

[0040] During operation, the high-pressure gas emitted by the light gas cannon 1 propels the detonator 32, ammunition 33, and sabot 2 out of the cannon's muzzle. The sabot 2, under the influence of the airflow, disintegrates into two projectile sabots 21, deviating from its trajectory, while the ammunition 33, carrying the detonator 32, continues to move to the right along its initial velocity v. A high-voltage current 5 is passed through the large coil 4, generating a strong magnetic field. The ammunition 33, carrying the small coil 31 and the detonator 32, then passes through the strong magnetic field formed by the copper coil, generating an electromotive force and current, which excites the detonator 32 to detonate the ammunition 33, resulting in an explosion in the free field of air and producing a kinetic shock wave.

[0041] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present invention should be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A light-gas gun loading based dynamic blast shock wave effect simulation device, characterized in that: It comprises a light gas gun (1), a shell support (2) arranged at the exit end of the light gas gun (1), a shell body (3) embedded in the shell support (2), and a large coil (4) arranged at a predetermined position and corresponding to the exit end of the light gas gun (1); The light gas gun (1) is used to emit high-pressure gas to push the shell support (2) and the shell body (3) inside it to pass through the large coil (4); The shell body (3) comprises a small coil (31), a detonator (32), and a shell charge (33); the two ends of the small coil (31) are respectively connected with the leg wire led out from one end of the detonator (32); the other end of the detonator (32) is connected with the shell charge (33) for detonating the shell charge (33); The large coil (4) is connected with a high-voltage power supply (5); The shell support (2) and the shell body (3) are both cylindrical; The shell support (2) comprises two sub-shell supports (21); A shell body mounting cavity is arranged between the two sub-shell supports (21), one end of the shell body mounting cavity close to the light gas gun (1) is closed, and the other end of the shell body mounting cavity away from the light gas gun (1) is open; The inner wall of the shell body mounting cavity is a stepped surface, so that the shell body mounting cavity forms a large mounting cavity (22) and a small mounting cavity (23) which are connected with each other; the shell charge (33) is arranged in the large mounting cavity (22); the small coil (31) and the detonator (32) are arranged in the small mounting cavity (23) outside the shell charge (33); The other end of the detonator (32) away from the small coil (31) is inserted into the shell charge (33); The shell charge (33) is arranged on the side close to the large coil (4).

2. The light gas gun loading based simulation apparatus for blast wave effect of explosion as claimed in claim 1 wherein: It further comprises a camera mechanism; The camera mechanism is arranged on the side corresponding to the preset detonation position of the shell charge (33) and is used to shoot the picture when the shell charge (33) is detonated.

3. The light gas gun loading based simulation apparatus of blast shock wave effect according to claim 2, characterized in that: The large coil (4) and the small coil (31) are both copper coils.

4. The light gas gun loading based simulation apparatus of blast shock wave effect according to claim 3, characterized in that: The shell support (2) and the shell body (3) are both mounted in the barrel of the light gas gun (1).

5. The light gas gun loading based simulation apparatus of blast shock wave effect according to claim 4, characterized in that: The shell charge (33) is a TNT charge.

6. A method for simulating the effect of a blast shock wave based on a light-gas gun loading, for the device for simulating the effect of a blast shock wave based on a light-gas gun loading according to any one of claims 1 to 5, characterized in that, It comprises the following steps: Step 1, connecting the high-voltage power supply (5) with the large coil (4) to generate a strong magnetic field in the large coil (4); Step 2, making the light gas gun (1) emit high-pressure gas, so that the shell support (2) and the shell body (3) inside it are shot at the large coil (4) under the pushing of the high-pressure gas; Step 3, the shell support (2) is decomposed and deviated from the trajectory under the action of air flow, and the shell body (3) continues to be shot at the large coil (4) along the initial velocity direction; Step 4, when the small coil (31) connected with the leg wire led out from the detonator (32) passes through the strong magnetic field, an electromotive force and a current are generated to excite the detonator (32) to detonate the shell charge (33), and a dynamic explosion shock wave is generated by the explosion in the air free field.

7. The light gas gun loading based simulation method of the effect of a blast wave according to claim 6, characterized in that, The step 4 further comprises: Using the camera mechanism to shoot the picture when the shell charge (33) is detonated for explosion data analysis.

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