Barrelled weapon launch test apparatus

Abstract

The application relates to a barrel weapon launching test device, which comprises a barrel, a powder chamber and a breechblock; the barrel is a movement section of a bullet; the powder chamber is used for loading gunpowder; the breechblock mainly comprises a tail shell, a bolt part and a rubber sleeve and is used for blocking the powder chamber and firing ignition; the tail shell part mainly comprises a tail shell and an inner negative electrode connecting piece and covers the powder chamber; the bolt part mainly comprises a bolt and an inner positive electrode connecting piece and is arranged in the center of the tail shell. Compared with the prior art, the application can realize the test launching work of the barrel weapon by using simple structure and principle; meanwhile, the simulation test device provided by the application is small in size, simple in structure, easy to operate, safe and reliable and economical and practical.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of weapon launching system, in particular to a barrel weapon launching test device. BACKGROUND

[0002] ‌The current development of artillery presents a trend of diversification, high efficiency and intelligence. As an important ground fire support weapon, artillery has undergone a transformation from simple to complex and from single purpose to multi-purpose. With the progress of science and technology and the change of battlefield needs, modern artillery has made significant improvements in performance, accuracy, range, etc. For example, some new artillery adopts advanced guidance technology, which can achieve high-precision strike in complex environment, greatly improving the combat efficiency. In addition, the production and maintenance of artillery are becoming more and more efficient, reducing the use cost and improving the combat capability of the troops.

[0003] With the continuous development of artillery ammunition and propulsion technology, range will no longer be the bottleneck of artillery performance. In the future, artillery will be able to achieve longer and more accurate strikes. In order to cope with the rapidly changing battlefield environment in modern warfare, the firing speed of artillery will continue to improve to achieve more efficient strikes. On the other hand, artillery will pay more attention to the improvement of precision guidance and striking power. By introducing more advanced sensors and guidance technology, artillery will be able to achieve higher striking accuracy and stronger lethality. The degree of automation of artillery will be further improved, reducing the operation burden of the gun crew and improving the battlefield adaptability. However, the development trend of artillery is also affected by some limiting factors. For example, the improvement of range and lethality is limited by the energy density, physical properties of ammunition and international arms control agreements. The improvement of the intelligence and automation level of artillery also faces technical challenges such as software algorithms, data transmission and network security.

[0004] ‌The scientific research and experimental study of gunpowder is an essential part of the current military research field. The structure of the standard artillery mainly consists of two parts: the barrel and the carriage. The barrel part is composed of the barrel, the breech, the breechblock and the muzzle device, while the carriage part is composed of the recoil brake, the cradle, the upper carriage, the elevation mechanism, the traverse mechanism, the balance mechanism, the sighting device, the lower carriage, the main carriage and the moving body. The structural design of artillery takes into account factors such as long-term accurate firing, change of firing direction, recoil energy handling, lightweight sighting structure, etc. to ensure the effectiveness and operability of artillery in actual combat. However, this complex structure of artillery brings many difficulties to scientific research and experiments. First, it is expensive and difficult for scientific research and experiments to afford; second, it is complex to operate and requires professional personnel to operate; third, it is difficult to maintain, and if the parts are damaged, professional personnel are needed for maintenance, with long maintenance period and complex process. As a scientific research and experimental device, it is necessary to simplify the device under the premise of reproducing the scientific research problems of interest.

[0005] Therefore, the actual barrel weapon launching test is difficult, high in cost, complex in test piece, extremely low in repeated test probability, and extremely unrealistic as a scientific research test. Moreover, the operation is very difficult, and it is difficult to ensure safety. Currently, no test device for barrel weapons is reported. SUMMARY

[0006] The present application aims to provide a barrel weapon launching test device, which greatly simplifies the complex breech structure of barrel weapons and can achieve the test and research of the muzzle flow field of barrel weapons during launching and other test purposes.

[0007] The technical solution for achieving the purpose of the present application is a barrel weapon launching test device, comprising a barrel, a chamber and a breech portion; wherein the breech portion is mainly used for plugging the chamber and firing ignition; the breech portion comprises a tail shell portion, a bolt portion and a rubber sleeve; the rubber sleeve is sleeved on the outside of the bolt portion, and the bolt portion and the rubber sleeve are jointly arranged in the center through hole of the tail shell portion.

[0008] The tail shell portion comprises a shell and an inner negative electrode connecting piece; the shell is fixedly connected with the chamber; the inner negative electrode connecting piece is installed on the shell, the inner negative electrode connecting piece is connected with the negative electrode wire of the ignition cartridge in the chamber, and the shell is connected with the negative electrode of the external ignition wire.

[0009] The shell is provided with a sealing ring groove; the sealing ring groove is used for placing a sealing ring and plays a role of air closing.

[0010] One end of the shell is internally provided with a shell threaded hole, which is connected and locked with the chamber through the shell threaded hole; the other end of the shell is internally provided with a center through hole, which is used for installing the bolt portion and the rubber sleeve.

[0011] The bolt portion comprises a bolt body segment, an inner positive electrode connecting piece and an outer threaded segment in sequence; during installation, the bolt body segment is arranged in the center through hole and extends out of the end of the shell; the inner positive electrode connecting piece is connected with the positive electrode wire of the ignition cartridge in the chamber, and the outer threaded segment is connected with the positive electrode of the external ignition wire; the outer threaded segment extends out of the shell and is pressed tightly by a nut.

[0012] The shell threaded hole is a self-locking thread, which is locked after being rotated by 90 degrees.

[0013] The shape of the center through hole matches the bolt, and the diameter of the center through hole is greater than the outer diameter of the bolt, and the gap is used for placing the rubber sleeve.

[0014] Compared with the prior art, the body tube weapon launching test device provided by the application has the advantages that the launching principle is simple, the structure is easy to realize, the operation is simple, safe and reliable, and the device is economical and practical, and the complex structure design of the artillery is not needed, the artillery launching test for the purpose of test is greatly simplified, the safety, operability and maintainability problems caused by the complex and expensive test piece can be effectively avoided, the test cost and workload can be effectively saved, and the application provides a feasible test scheme for the safety and reliability analysis of the body tube weapon artillery launching test in engineering application. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a three-dimensional view of the body tube weapon launching test device of the application;

[0016] Figure 2 is a left view of the body tube weapon launching test device of the application;

[0017] Figure 3 is a front view of the body tube weapon launching test device of the application;

[0018] Figure 4 is a left view of the tail shell part of the body tube weapon launching test device of the application;

[0019] Figure 5 is a left view of the bolt part of the body tube weapon launching test device of the application; DETAILED DESCRIPTION

[0020] The application will be further described below in combination with the drawings and specific embodiments. The application discloses a body tube weapon launching test device, which simplifies the complex structure of the body tube weapon, reproduces the launching state of the body tube weapon, and solves the test problem of the complex structure of the body tube weapon. The application provides an effective and reliable scientific research test means for the body tube weapon, and can be used for test verification of theoretical and numerical research, and provides protection for the improvement and improvement of the body tube weapon development technology.

[0021] As shown in Figure 1 , Figure 2 , Figure 3 The body tube weapon launching test device of the application includes a body tube 1, a powder chamber 2 and a tail part 3, wherein the body tube 1 is located in front of the powder chamber 2, and the tail part 3 is located behind the powder chamber 2; the body tube 1 is internally provided with a projectile for completing the launching work of the projectile; the powder chamber 2 is used for placing gunpowder; and the tail part 3 is mainly used for plugging the powder chamber and firing ignition.

[0022] The breech section 3 includes a breech housing section 4, a bolt section 5, and a rubber sleeve 6. The rubber sleeve 6 is fitted over the bolt section 5, and the bolt section 5 and the rubber sleeve 6 are both placed in the central through hole 10 of the breech housing section 4, insulating the bolt section 5 and the breech housing 4 and separating them. The breech housing section 4 is the negative terminal, and the bolt section 5 is the positive terminal. During firing and ignition, the positive and negative terminals of the firing signal are connected to the bolt section 5 and the breech housing section 4, respectively, thereby realizing the function of firing and ignition.

[0023] The tail housing 4 includes a housing 7, a sealing ring groove 8, an inner negative electrode connector 9, and a central through hole 10. The housing 7 is threadedly interlocked with the powder chamber 2; the sealing ring groove 8 is used to house the sealing ring, serving to seal the air; the inner negative electrode connector 9 is a square protrusion with a hole, installed on the housing 7, and connects to the negative electrode wire of the ignition powder box inside the powder chamber 2, thus forming the negative electrode of the tail housing 4; the central through hole 10 is used to house the bolt 5 and the rubber sleeve 6. The threaded hole 8 of the housing communicates with the central through hole 10. The shape of the central through hole 10 matches the bolt 5, and its diameter is slightly larger than the outer diameter of the bolt 5, with a gap to accommodate the rubber sleeve 6.

[0024] The bolt section 5 sequentially includes a bolt body section 11, an inner positive electrode connector 12, and an external thread section 13. During installation, the bolt body section 11 is placed in the central through hole 10 and extends out of the end of the housing 7. The inner positive electrode connector 12 is a square protrusion with a hole, which connects to the positive electrode line of the ignition box in the powder chamber 2, thereby forming the positive electrode of the bolt section 5. The external thread section 13 extends out of the housing 7, and an insulating gasket is fitted on the external thread section 13 for insulation between the nut and the housing 7 in the tail housing section 4. The bolt section 5 is tightened as a whole by the nut engaging with the external thread section 13.

[0025] The energy produced by gunpowder satisfies the following equation:

[0026]

[0027] In the formula

[0028] ,

[0029] Where: s is the cross-sectional area of ​​the barrel, p is the pressure at the base of the projectile, and l is the projectile formation. For gunpowder power, It's the quality of the gunpowder. This indicates the percentage of gunpowder already burned. This is a correction factor, where m is the projectile mass and v is the projectile velocity. To reduce the free volume of the medicine chamber, To reduce the diameter of the medicine chamber, For filling density, For my sake, The adiabatic index, The density of the gunpowder.

[0030] The design of the tail shell part 4 meets the impact force on the tail of the gun:

[0031] F pt =Ap t ;

[0032] In the formula, F pt is the total force of the gun barrel, A is the cross-sectional area of the gun barrel, and p t is the average pressure at the bottom of the barrel.

[0033] The formula for calculating the average pressure at the bottom of the barrel is:

[0034]

[0035] Where m is the mass of the projectile, is the mass of the charge, and φ1 is the calculation coefficient of only considering the secondary work of the projectile rotation and friction, φ1≈1.02, and φ is the calculation coefficient of the secondary work.

[0036] The barrel is a straight-diameter circular tube with a certain thickness, and the projectile moves in the barrel during launching.

[0037] The chamber is a straight-diameter circular tube with a certain thickness, and its inner diameter is slightly larger than the barrel, located behind the barrel, and linearly transitions with the barrel.

[0038] The working principle is as follows: before the test, the projectile is pushed into the barrel 1 from the tail end of the chamber 2, and then the gunpowder is loaded into the chamber 2. The rubber sleeve 6 is sleeved on the bolt body section 11 of the bolt part 5, and is placed in the center through hole 10 of the tail shell 4, and the positive and negative electrode lines of the ignition powder box are connected with the inner positive electrode connecting piece 12 of the bolt body and the negative electrode connecting piece 9 of the tail shell respectively, and then placed in the chamber 2, and the shell 7 is sleeved on the chamber 2, and is rotated and tightened to lock. And use the nut to insulate and press the outer threaded section 13 of the bolt part 5, then connect the positive electrode of the outer ignition line to the outer threaded section 13 of the bolt part 5, and connect the negative electrode of the outer ignition line to the shell 7, thereby forming a loop and realizing the function of firing and ignition. After ignition and firing, the ignition powder in the chamber 2 is ignited, which then ignites the main charge. After the main charge is ignited, high-temperature and high-pressure gas is formed, which pushes the projectile forward, and the projectile moves out of the barrel from the muzzle. Then, the high-temperature and high-pressure gas in the barrel is ejected, forming a barrel weapon muzzle flow field, and acting on the projectile to interfere with the initial flight attitude of the projectile.

[0039] The barrel weapon launching test device designed by the application greatly simplifies the structure of the barrel weapon while ensuring the launching function of the gunpowder.

[0040] Specifically, the barrel in the embodiment is a circular tube with equal diameter and certain thickness, which is made of cannon steel material, has a length of 1500 mm and an inner diameter of 40 mm; the length of the chamber is 500 mm, the inner diameter is 50 mm, and the thickness of the tail shell is 10 mm.

[0041] In the test device, the mass of the projectile is 500 g, and a reasonable interior ballistic loading scheme is designed, so that the interior ballistic parameters are consistent with the actual situation, and the muzzle velocity and bore pressure of the projectile are within a reasonable range.

[0042] For the barrel weapon launching test device in the embodiment, a reasonable geometric structure of the barrel weapon tail is designed, so that the test results obtained by the simulation test meet the standards and the design purpose is achieved.

[0043] The barrel weapon launching test device provided by the present application has simple principle and easy-to-implement structure, greatly utilizes the original test components, and greatly reduces the difficulty and cost of the test. Under the premise of ensuring that the initial flight parameters and the interior ballistic parameters of the projectile are consistent with the actual situation, the simulation test results are consistent with the actual situation.

[0044] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. within the essence and principles of the present application should be included in the protection scope of the present application.

Claims

1. A test device for firing a barrel-type weapon, characterized in that, include: The barrel, the chamber, and the breech; the breech is used to seal the chamber and for firing and ignition; the breech includes a breech housing, a bolted section, and a rubber sleeve; the rubber sleeve is fitted over the bolted section, and the bolted section and the rubber sleeve are together placed in the central through hole of the breech housing. The tail housing includes a housing and an inner negative electrode connector; the housing is fixedly connected to the propellant chamber; the inner negative electrode connector is installed on the housing and is connected to the negative electrode wire of the ignition box inside the propellant chamber; the tail housing forms the negative electrode and the housing is connected to the negative electrode of the external ignition wire. One end of the housing has a threaded hole inside, which is used to lock the housing to the medicine chamber; the other end of the housing has a central through hole inside, which is used to install bolts and rubber sleeves. The bolt section includes a bolt body section, an inner positive electrode connector, and an outer threaded section in sequence. During installation, the bolt body section is placed in the central through hole and extends out of the end of the housing. The inner positive electrode connector is connected to the positive electrode wire of the ignition cartridge in the propellant chamber, and then the bolt section forms a positive electrode outer threaded section to connect to the positive electrode of the external ignition wire. The outer threaded section extends out of the housing and is insulated and tightened with a nut.

2. The test apparatus for firing a barrel-type weapon according to claim 1, characterized in that, The housing has a sealing ring groove; the sealing ring groove is used to place the sealing ring and play a role in sealing the air.

3. The test apparatus for firing a barrel-type weapon according to claim 1, characterized in that, The threaded hole in the housing is a self-locking thread, which locks in place when rotated 90°.

4. The test apparatus for firing a barrel-type weapon according to claim 1, characterized in that, The shape of the central through hole matches the bolt, and its diameter is larger than the outer diameter of the bolt, with a gap to accommodate a rubber sleeve.

5. The test apparatus for firing a barrel-type weapon according to claim 4, characterized in that, The formula for calculating the impact force on the tail section shell is: F pt =Ap t ; In the formula, F pt The resultant force in the gun barrel is A, where A is the cross-sectional area of ​​the gun barrel, and p is the cross-sectional area of ​​the gun barrel. t This represents the average pressure at the bottom of the borehole.

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