A sabot for testing 105mm smoothbore guns

Abstract

This invention relates to a sabot for testing 105mm smoothbore guns, comprising a sabot shell, a projectile inserted inside the shell, a gas-sealing ring threaded to the bottom of the shell, an end cap screwed to the end of the gas-sealing ring away from the shell, a support plate snapped onto the end of the shell near the gas-sealing ring, and a limiting ring snapped onto the end of the projectile near the support plate. This invention uses a tapered nylon limiting ring to ensure complete contact between the projectile base and the bottom of the sabot shell. The thickness of the support plate is adjustable to meet firing intensity requirements, reducing the overall mass of the projectile. The gas-sealing ring has a protrusion in the middle with the same diameter as the support plate, which can press the support plate firmly. The tail of the gas-sealing ring has a variable width at its maximum diameter to adapt to firing sealing requirements under different overloads. The end cap fixed to the tail of the gas-sealing ring increases firing sealing and improves firing reliability. A slit is cut at 20-degree intervals at the connection between the gas-sealing ring and the sabot shell to facilitate better separation of the sabot shell after exiting the muzzle.

Description

Technical Field

[0001] This invention relates to the field of artillery experimental equipment technology, specifically to a sabot used in the testing of a 105mm smoothbore gun. Background Technology

[0002] A 105mm smoothbore cannon is a cannon with a caliber of 105mm. It has no rifling in the barrel. Smoothbore cannons have high pressure and are capable of firing high-velocity discarding sabot armor-piercing projectiles. Smoothbore cannons are cheaper to manufacture than rifled cannons.

[0003] When there is a gap between the existing sabot shell and the bottom of the projectile, the sabot is subjected to high pressure from the propellant gases during firing, which generates a large acceleration over a very short distance, impacting the bottom of the projectile and causing the sabot to disintegrate inside the barrel, resulting in test failure. The gun barrel is also damaged by fragments and cannot meet the firing intensity requirements under different overloads. Summary of the Invention

[0004] This invention provides a sabot for testing 105mm smoothbore guns. It solves the problem that in existing devices, when there is a gap between the sabot shell and the bottom of the projectile, the sabot is subjected to high pressure from the propellant gases during firing. This pressure generates a large acceleration over a very short distance, impacting the bottom of the projectile and causing the sabot to disintegrate inside the barrel, leading to test failure. The gun barrel is also damaged by fragments, making it unable to meet the firing intensity requirements under different overloads.

[0005] To address the problems raised in the background section above.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a sabot for testing 105mm smoothbore guns, comprising a sabot shell, a projectile inserted inside the sabot shell, a gas-sealing ring threadedly connected to the bottom of the sabot shell, an end cap connected to the end of the gas-sealing ring away from the sabot shell by screws, a support plate snapped onto the end of the sabot shell near the gas-sealing ring, and a limit ring snapped onto the end of the projectile near the support plate.

[0007] In a further embodiment, the sabot shell is made of aluminum alloy and consists of three 120° sabot plates, which facilitates the sabot shell wrapping around the projectile.

[0008] In a further embodiment, the tail diameter of the gas-sealing ring is 20mm larger than the cannon caliber, and the gas-sealing ring is made of nylon material to increase the airtightness of the device and ensure the airtightness of the firing process.

[0009] In a further embodiment, four screws are evenly threaded onto the end cap, the diameter of the end cap is 5mm smaller than the cannon caliber, and the end cap is made of aluminum alloy to increase the compression resistance of the nylon sabot gas sealing ring and ensure the airtightness during the firing process.

[0010] In a further embodiment, the air-sealing ring has a protrusion in the middle with the same diameter as the support plate. The support plate is made of aluminum alloy and can be pressed tightly to make the support plate and the spring base fit even tighter.

[0011] In a further embodiment, a cutting slit is provided every 20° at the connection between the gas-sealing ring and the sabot shell, and the tail of the gas-sealing ring has a certain width at its maximum diameter to facilitate better separation of the sabot shell after it exits the muzzle.

[0012] The beneficial effects achieved by this invention are:

[0013] 1. The present invention incorporates a tapered nylon retaining ring between the sabot shell and the tail of the projectile, which prevents relative axial movement between the projectile and the sabot shell and ensures complete contact between the projectile base and the bottom of the sabot shell.

[0014] 2. The support plate of the present invention can adjust its thickness to adapt to the launch intensity requirements under different overloads, thus reducing the overall mass of the projectile under different launch conditions.

[0015] 3. The gas-sealing ring of the present invention has a protrusion in the middle with the same diameter as the support plate, which can press the support plate tightly so that the support plate is closer to the base of the projectile; the tail of the gas-sealing ring has a certain width at the maximum diameter, and this width can be varied to adapt to the launch sealing requirements under different overload conditions.

[0016] 4. The end cap fixed to the tail of the gas-sealing ring is used to enhance the compression resistance of the tail of the sabot shell, increase the sealing of the launch and improve the reliability of the launch.

[0017] 5. The connection between the gas sealing ring and the sabot shell is cut with wire cutting at 20 degrees to facilitate better separation of the sabot shell after it exits the muzzle. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a front cross-sectional view of the present invention;

[0020] Figure 2 This is a three-dimensional structural schematic diagram of the present invention;

[0021] Figure 3 This is a schematic diagram of the bottom structure of the present invention;

[0022] Figure 4 This is a schematic diagram of the three-dimensional structure of the air-sealing ring of the present invention;

[0023] Figure 5 This is a three-dimensional schematic diagram of the end cap of the present invention;

[0024] Figure 6 This is a schematic diagram of the three-dimensional structure of the limiting ring of the present invention.

[0025] In the diagram: 1. Salamander shell; 2. Projectile; 3. Gas sealing ring; 4. End cap; 5. Support plate; 6. Limiting ring. Detailed Implementation

[0026] 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.

[0027] Example 1

[0028] Please see Figure 1 The present invention relates to a sabot for testing a 105mm smoothbore gun, comprising a sabot housing 1, a projectile 2 inserted inside the sabot housing 1, a sealing ring 3 threadedly connected to the bottom of the sabot housing 1 to increase the sealing performance of the device and prevent leakage, an end cap 4 connected to the end of the sealing ring 3 away from the sabot housing 1 by screws, the end cap 4 enhancing the pressure resistance of the tail of the sabot housing 1, and a support plate 5 snapped onto the end of the sabot housing 1 near the sealing ring 3, the sealing ring 3 pressing the support plate 5 to further tighten the support plate 5 against the base of the projectile.

[0029] In the existing device, there is a gap between the sabot shell 1 and the projectile 2. During the test, the high pressure of the propellant gas can easily cause the sabot shell 1 to disintegrate due to the impact on the projectile base, which can lead to problems in the test. By attaching a limit ring 6 to the end of the projectile 2 near the support plate 5, the projectile base and the sabot shell 1 can be completely fitted together to prevent leakage.

[0030] Example 2

[0031] Please see Figure 2-4 Further improvements were made based on Example 1:

[0032] In this embodiment, the sabot shell 1 is composed of three 120° aluminum alloy sabot plates. By using a sealing ring 3 to thread it onto the sabot shell 1, the three sabot plates can be easily engaged with each other, which facilitates the fixing and recycling of the sabot shell 1.

[0033] To enhance the airtightness of the device, the tail diameter of the airtight ring 3 is 20mm larger than the caliber of the cannon. The airtight ring 3, made of nylon material, can deform and bend to fill the gaps when under pressure.

[0034] In this embodiment, four screws are threaded to an aluminum alloy end cap 4, which is used to increase the compression resistance of the nylon sabot shell 1 and the sealing ring 3, and to prevent the device from deforming due to excessive compression of the sabot shell 1 and the sealing ring 3, which would affect the airtightness and thus affect the accuracy of the projectile.

[0035] Example 3

[0036] Please see Figure 5-6 Further improvements were made based on Example 1:

[0037] To ensure a tighter fit between the support plate 5 and the missile base, a protrusion is fixedly connected inside the gas-sealing ring 3. The gas-sealing ring 3 is secured inside the support plate 5 by the protrusion. The tail of the gas-sealing ring 3 has a certain width at its maximum diameter, which can be varied to adapt to the launch sealing requirements under different overload conditions.

[0038] In this embodiment, in order to facilitate better separation of the sabot shell 1 after it exits the muzzle, a cutting slit is provided every 20° at the connection between the gas sealing ring 3 and the sabot shell 1, so that the connection between the sabot shell 1 and the sabot shell 1 can break and separate quickly when subjected to pressure.

[0039] Specifically, in use, the present invention firstly fixes a conical gas-sealing ring 3 at the tail of the projectile 2. The sabot shell 1 is composed of three 120-degree sabot plates. The sabot shell 1 wraps around the outside of the projectile 2. At the bottom, there is an aluminum alloy support plate 5 supporting the projectile base. Then, the gas-sealing ring 3 is connected to the bottom of the aluminum alloy sabot shell 1 by threads, while pressing the support plate 5 at the bottom of the projectile. The diameter of the tail of the gas-sealing ring 3 is larger than the caliber of the cannon, so as to play the role of gas sealing. Finally, an aluminum alloy end cap 4 with a diameter smaller than the caliber of the cannon is fixed to the bottom of the gas-sealing ring 3 with four screws to increase the compression resistance of the nylon sabot shell 1 and the gas-sealing ring 3 and ensure the airtightness during the firing process.

[0040] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sabot for use in testing 105mm smoothbore guns, characterized in that, The device includes a sabot housing (1), a projectile (2) is inserted inside the sabot housing (1), a gas-sealing ring (3) is threaded to the bottom of the sabot housing (1), an end cap (4) is connected to the end of the gas-sealing ring (3) away from the sabot housing (1) by a screw, a support plate (5) is snapped onto the end of the sabot housing (1) near the gas-sealing ring (3), a limit ring (6) is snapped onto the end of the projectile (2) near the support plate (5), and the thickness of the support plate (5) is adjustable.

2. The sabot for use in a 105mm smoothbore gun test as described in claim 1, characterized in that, The sabot shell (1) is made of aluminum alloy and consists of three 120° sabot plates.

3. A sabot for testing a 105mm smoothbore gun according to claim 1, characterized in that, The tail diameter of the air-sealing ring (3) is 20 mm larger than the caliber of the cannon, and the air-sealing ring (3) is made of nylon material.

4. A sabot for testing a 105mm smoothbore gun according to claim 1, characterized in that, The end cap (4) is threaded with four screws evenly. The diameter of the end cap (4) is 5mm smaller than the caliber of the cannon. The end cap (4) is made of aluminum alloy.

5. A sabot for testing a 105mm smoothbore gun according to claim 1, characterized in that, The air-sealing ring (3) has a protrusion in the middle with the same diameter as the support plate (5), which is made of aluminum alloy.

6. A sabot for testing a 105mm smoothbore gun according to claim 1, characterized in that, The air-sealing ring (3) and the sabot shell (1) are connected by a cutting slit every 20°, and the tail of the air-sealing ring (3) has a certain width at its maximum diameter.

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