RU2807257C1 - Assault tank artillery gun with muzzle brake - Google Patents

Abstract

FIELD: artillery.

SUBSTANCE: barrel of an artillery gun of an assault tank contains an outer tube of a calculated profile with a nozzle fixed on the muzzle and a muzzle brake made in its front part. The nozzle on the pipe is fixed by means of a threaded connection.

EFFECT: maintaining the balance of the tipping parts of the gun relative to the trunnion axis, reducing the recoil force on the trunnion axis.

2 cl, 2 dwg

Description

The invention relates to the field of military equipment and can be used in the development or modernization of artillery guns of an assault tank to improve their technical characteristics and expand the conditions for their use during operation.

Depending on the tasks being solved, the design of the artillery gun barrel mounted on the tank is subject to various changes, which entail the need to introduce changes to the design of other components of the artillery gun. The barrel of a basic artillery gun or cannon is further understood as a structure made of a pipe with a casing installed on its breech, on which the breech is attached. Various technical solutions are known, in one of which, for example, the imbalance of the gun, when the elevation angle changes, is eliminated by means of a flexible rod acting through a device from a pneumatic cylinder (US Pat. No. 5196642, F41A 27/30, dated 01/02/1992). The cylinder requires a fixed base for its fastening, and the rod has a certain length. The presence of additional moving parts complicates the design, increases the dimensions of the product, and increases the requirements for product maintenance and personnel safety.

There is a known technical solution in which the barrel of a tank gun was made heavier on the muzzle side due to an increase in its thickness in the receiver area (pat. RU No. 2666505, F41A 21/00, dated 07/04/2017). The moment that appears due to this design change relative to the axis of the trunnions can be balanced by introducing additional mass on the breech of the gun. This achieves balancing of the swinging part, but this leads to a slight increase in the dimensions of the breech of the gun and an increase in its mass. Increasing the dimensions of the gun breech is in many cases difficult to implement due to restrictions imposed on the possible size of the gun breech occupied in the fighting compartment. There is another direction of the problems being solved, which is the use of auxiliary equipment installed on the barrel. This is how the barrel of an artillery gun is known, which contains a pipe with a nozzle placed on the muzzle, made in the form of a clamp that holds the control element (pat. No. 2330231, F41A 21/00, dated 06/23/2003). In this case, the nozzle acts as a holder for the control element with the usual length of the artillery gun barrel. Another direction of technical solutions to similar problems is the creation of a pipe design for a shortened barrel, with an increased level of protection from external and internal influences of the front part of the pipe, for an assault tank gun, created on the basis of the main battle tank gun, while maintaining the possibility of using a blank tube of the base tank gun barrel for the manufacture of a shortened barrel pipe, as well as maintaining the possibility of installing this barrel in the base gun (pat. No. 2775183 F41A 21/02, F41A 25/00, dated 06/28/2022).

This technical solution can be adopted as a prototype for the proposed artillery gun of an assault tank. It should be noted that the gun barrel of an assault tank, as experience in the combat use of tanks in urban conditions has shown, should have a shorter length than the barrel of a main battle tank, due to the presence of limited space for the tank to maneuver. After the war, with the development of tanks, greater efficiency of tank guns was required, which led to an increase in calibers and barrel lengths. The appearance during this time of a huge number of different anti-tank weapons led to the fact that the tank became too vulnerable on the battlefield. More recently, the very existence of the tank was in great doubt in the expert community. However, a series of wars and military conflicts in recent times has put everything in its place. But the vulnerability of the tank during combat in the city still remains a big problem. This gave rise to the idea of an assault tank designed for urban combat. This is a tank with a shortened gun and bulldozer equipment with remote control. The tank operates as part of a robotic combat complex. This is the UVZ “Storm” project. Moreover, when an assault tank maneuvers in such conditions, the likelihood of the front part of the barrel hitting obstacles increases. The likelihood of damage to the barrel by lethal means also increases due to the presence of close fire contact, which together necessitates the introduction of additional protection into the barrel design. However, the technical solution (pat. No. 2775183 F41A 21/02, F41A 25/00, dated 06/28/2022) adopted as a prototype has a number of disadvantages. This is a reduction in barrel length, which sharply reduces the muzzle energy of the gun and, accordingly, the initial velocity of the projectile and, as a consequence, its accuracy and armor penetration. However, the assault tank is planned to be used not only for combat operations in an urban agglomeration. It should also be used for other purposes - reconnaissance of the enemy’s defenses in force, working from ambushes, as a means of fire support, clearing the offensive zone, suppressing enemy resistance centers, evacuating damaged equipment.

The problem to be solved by the claimed technical solution is the creation of a pipe design for a shortened barrel of an assault tank, with installation on the front part of the pipe, a nozzle and a muzzle brake made in the front part, for an assault tank gun, created on the basis of the main battle tank gun, while retaining the possibility of using a base tank gun barrel tube blank to make a shortened barrel tube, as well as retaining the possibility of installing this barrel into the base gun.

The technical result consists in creating a pipe design for a shortened gun barrel of an assault tank, created on the basis of the main battle tank gun, while maintaining the balance of the swinging part of the gun relative to the trunnion axis, taking into account the tank equipment hung on it, reducing the recoil force on the trunnion axis, due to the placement on the front part of the pipe there is a nozzle made in the form of an outer pipe and a muzzle brake in the front part.

The specified technical result is achieved by the fact that the artillery gun has its swinging part, including the cradle, barrel, bolt, recoil devices, and other component assembly units and parts, balanced relative to the axle axis, taking into account the tank equipment hung on it, the barrel pipe made shortened, with a nozzle attached to the corresponding mating surfaces of the front part of the pipe, made in the form of an outer pipe (outer cylinder), and a muzzle brake made in its front part. The nozzle, installed on the front part of the pipe (for a loose fit), is secured to it with a threaded connection, for which purpose corresponding threaded sections are made on the mating parts.

The proposed technical solution makes it easy to modify the base gun of a main battle tank for use in an assault tank; in addition, it increases the power of the gun's ammunition powder charge or its caliber by installing a nozzle on the front of the pipe, made in the form of an outer pipe (outer cylinder) and a muzzle brake in the front part. A new set of structural elements of the pipe allows, due to the introduction of a nozzle and a muzzle brake in the front part of the pipe fixed to the front part, to compensate for the imbalance of the swinging part of the artillery gun relative to the trunnion axis, which appears due to the shortening of the base gun pipe, and also to install the proposed barrel in the cradle base artillery gun, while it becomes possible to increase the level of the powder charge of the ammunition or increase its caliber. The nozzle can be made by installing it on a pipe with a loose fit and securing it to it with a threaded connection. The changes introduced to the design of the pipe for the artillery gun of an assault tank do not affect the seats of the structure of the gun pipe of the main battle tank. Those. the fundamental possibility of installing a main battle tank pipe into an assault tank and vice versa, or with appropriate modifications, the possibility of installing a weapon of increased caliber remains. This expands the technical capabilities for using artillery for an assault tank in different operating conditions. Technical solutions with features that bring the claimed technical solution closer to the prototype have not been identified and do not follow explicitly from the state of the art. This allows us to consider that the claimed technical solution is new and has an inventive step.

The essence of the proposed technical solution is illustrated by drawings, which show: - Fig. 1 - a gun barrel pipe with a muzzle brake attachment in the front part, installed on the pipe for a free fit, and a threaded connection secured to it; - Fig.2 - installation of a gun barrel with a muzzle brake attachment in the front part of it on an assault tank. As shown in Fig. 1, the gun tube consists of a pipe 1, a casing 2, a nozzle with a muzzle brake in its front part, 3 and stoppers 4. The nozzle with a muzzle brake in the front part 3 is installed on cylindrical supporting surfaces 6 and 7 pipe 1 and secured to it with a threaded connection 5, and secured from unscrewing by stoppers 4. The dimensions and profile of the nozzle with a muzzle brake in its front part were calculated in accordance with the requirement of the technical specifications for the length of the pipe for the artillery gun of an assault tank, as shown in Fig. 2 a) with bulldozer equipment, b) without bulldozer equipment. The device shown in Fig. 1 is assembled and operates as follows: when making a pipe 1 and a nozzle with a muzzle brake in the front part 3, cylindrical seats 6 and 7 are made on them, and a thread 5 is cut. After screwing on the nozzle with a muzzle brake is made With the muzzle brake, in the front part 3, holes are made on the pipe 1, into which stoppers 4 are screwed, securing the nozzle from unscrewing. The device shown in figure 2 operates as follows. A shot occurs with the expansion of powder gases, which, in fact, push the projectile out of the barrel. But at the same time, there is recoil as a counteraction, in our case, to the shot of a projectile, and an attachment with a muzzle brake in its front part 3. The muzzle brake redirects excess gases perpendicularly due to the holes in the muzzle brake - thereby reducing recoil. This has a positive effect on accuracy and, in addition, the muzzle brake increases the survivability of the barrel.

The proposed design solutions make it possible to increase the combat effectiveness of an assault tank's gun, which is important in urban combat conditions, taking into account the presence of possible limited spaces for tank maneuvers, and taking into account possible fire contact both at close ranges when fighting in the city, and when conducting battle in open areas. Thus, the creation of a shortened tank gun for an assault tank, with the placement of an external nozzle with a muzzle brake in the front part of it on the front part of the pipe, makes it possible to modify the base tank gun with a minimum of changes to meet the requirements for an assault tank gun, ensuring balance swinging part at the level of the base gun and increasing the survivability of the artillery gun, the possibility of increasing the power of the powder charge and increasing the caliber of the gun with appropriate modification due to the introduction of an external nozzle with a muzzle brake in the front part of the front part of the pipe.

Claims (2)

1. An artillery gun of an assault tank, containing a swinging part, including a cradle, a barrel, a bolt, recoil devices, balanced relative to the axis of the axles, taking into account the tank equipment hung on it, characterized in that the barrel tube is made shortened, with attached to the corresponding mating the surface of the front part of the pipe with a nozzle made in the form of an outer pipe, with a muzzle brake in its front part. 2. An artillery gun according to claim 1, characterized in that the nozzle with a muzzle brake in its front part is installed on the front part of the pipe for a free fit and secured to it with a threaded connection, with the possibility of removal if necessary.

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