RU2518791C1 - Long-range gun - Google Patents

Abstract

FIELD: weapons and ammunition.

SUBSTANCE: long-range gun comprises a barrel (1) with a breech end (2) and ammunition with explosive charges (3), (4), which are made in the form of sequentially located along the length of the barrel (1) two or more separate chambers (5), (6) connected to the shell (7) through each other by the cartridge neck (8). In the bore (1) the holes (9) are made at a distance from the beginning (10) of the bore (1) which is smaller than the total length of the first (5) and the second chambers (6), but greater than the length of the first chamber (5). The chambers are connected to each other through the cartridge neck (8) and the partition (11) which is a bottom of the second chamber (6).

EFFECT: elimination of impact of gas-dynamic waves during the shot.

2 cl, 3 dwg, 1 tbl

Description

Technical field

The invention relates to artillery, namely to long-range barrel artillery guns.

State of the art

A device for communicating a muzzle velocity to a projectile is known, based on the use of a powder charge located in a single-chamber case, when, as a result of ignition of the powder charge in the chamber of the stationary case, the energy of the powder is transferred to the artillery shell, informing the projectile of the translational motion in the barrel [Rusyak I.G. Intra-chamber heterogeneous processes in stem systems / I.G. Rusyak, M.M. Ushakov. - Yekaterinburg: Publishing House URORAN, 2001. - 259 p.].

However, this device has a significant drawback, limiting the maximum muzzle velocity of a projectile having zero speed before firing. This limitation is due to the impossibility of communicating a high translational velocity of the projectile associated with restrictions on the dead weight of the powder gas molecules, which also accelerate during the shot, and the rate of thermal expansion of the powder gases.

A known method and device for increasing muzzle velocity of a projectile based on the use of a multi-stage shot using a multi-chamber sleeve consisting of several glasses (Staroverov N.E. Long-range gun of Staroverov. RF patent for invention RU 2391617, IPC F41A 1/02, publ. 10.06. 10 g.), The distinctive features of which is the presence of a fixed first chamber of the sleeve with a motionless powder charge located in it, connected to the projectile through the second chamber of the sleeve, acceleration of the second chamber of the sleeve placed in the WTO charge to the chamber with a charge up to a speed of V ₀ and subsequent ignition of the powder charge located in the second chamber of the cartridge case, and an increase in the muzzle velocity of the projectile to a speed of 2V ₀ .

A feature of the prototype is that one or more sections of the barrel is made with bypasses, and the ammunition is equipped with additional explosive charges placed in separate pistons made in the form of glasses.

However, when the powder charge is ignited in the second chamber of the cartridge case (glass) of the shot, the second chamber of the cartridge begins to move toward the breech of the barrel, creating large shock gas-dynamic waves in the slug space between the bottom of the second chamber of the cartridge and the breech of the barrel.

Disclosure of invention

The problem to which the invention is directed, is to eliminate gas-dynamic shock waves.

The problem is solved using the signs specified in the 1st paragraph of the claims, common with the prototype, such as a long-range gun containing a barrel with a breech and ammunition with explosive charges, made in the form of two or more separate chambers located in series along the barrel length , and distinctive essential features, such as cameras connected to the projectile through each other through the neck of the sleeve, while holes are made in the bore at a distance from the beginning of the bore less than mm length of the first and second chambers, but greater than the length of the first chamber.

According to paragraph 2 of the claims, the chambers are interconnected by means of the neck of the sleeve and the partition, which is the bottom of the second chamber.

The technical result achieved by the above set of essential features is to eliminate shock gas-dynamic waves during firing using a multi-chamber sleeve and making holes in the barrel barrel.

Brief Description of the Drawings

The invention is illustrated by the following drawings, which shows a diagram of the device of a two-chamber sleeve located in the barrel of a recoil artillery gun. Figure 1 shows the initial position of the cameras and the projectile; figure 2 shows the position of the chambers and the projectile after rupture of the neck of the sleeve at the time of the shot using a charge in the chamber 5; figure 3 shows the position of the chambers and the projectile at the time of the shot after ignition of the charge in the chamber 6.

Long-range gun (figure 1) contains a barrel 1 with breech 2 and ammunition with explosive charges 3, 4, made in the form of two or more separate chambers 5, 6 arranged in series along the barrel 1. Chambers 5, 6 are connected to the projectile 7 through each other through the neck of the sleeve 8, while in the bore of the barrel 1 holes 9 are made at a distance from the beginning 10 of the bore of the barrel 1, less than the total length of the first 5 and second chambers 6, but greater than the length of the first chamber 5. The chambers are interconnected by the neck of the sleeve 8 and the septum 11, which Xia bottom of the second chamber 6.

The partition 11 is connected to the wall of the chamber 6 and is integral with the walls of the chamber 6. The partition 11 separates the chambers 5 and 6. The walls of the chamber 6 are rigidly connected to the projectile 7. Charge 3 is placed in chamber 5, charge 4 is placed in chamber 6. The difference is in the barrel 1, holes 9 are made at a distance from the beginning of the bore, shorter than the total length of the chamber 5 and chamber 6, but greater than the length of the chamber 5. Position 10 indicates the bottom of the chamber 5.

The device operates as follows.

In chamber 5, charge 3 is ignited. After reaching the boost pressure in chamber 5 as a result of burning charge 3, the partition 11 separates from chamber 5, and the partition 11 together with chamber 6, projectile 7 and charge 4 begin to move as a unit in barrel 1. B as a result of the combustion of the powder charge 3, the baffle 11, the chamber 6, the charge 4 and the projectile 7 acquire a positive speed V ₀ (FIG. 2). After the baffle 11 passes through the holes 9 in the barrel 1, the charge 4 in the chamber 6 ignites. After the baffle 11 passes through the holes 9 in the barrel 1, the holes in the barrel 9 open, through these holes the powder gas is released into the atmosphere. Due to the emission of powder gases into the atmosphere through the openings 9, the pressure of the powder gases between the bottom of the chamber 5 and the baffle 11 drops to atmospheric pressure. As a result of the burning of charge 4 in the chamber 6, the pressure of the powder gases in the chamber 6 reaches the boost pressure. After reaching the boost pressure in the chamber 6, the rigid fasteners connecting the chamber 6 and the projectile 7 are destroyed, and the projectile 7 begins to move separately from the chamber 6, accelerating due to the burning of the powder charge 4 (figure 3). In this case, the partition 11, rigidly bonded to the walls of the chamber 6, after a while begins to move in the direction opposite to the direction of movement of the projectile 7. When the walls of the chamber 6 pass through the openings 9, the openings 8 are closed by the walls of the chamber 6, which prevents the emission of powder gases resulting from burning charge 4, through openings 9 into the atmosphere.

The table shows the calculation results based on mathematical modeling of ballistic processes using the described device to eliminate gas-dynamic shock waves in the projectile space and confirming the possibility of increasing the muzzle velocity of the projectile up to 3000 m / s.

Table Name of technical characteristic The numerical value of the characteristic Gun barrel gauge 0.170 m Barrel bore length 6 m 1 Gun Retractable Mass 3600 kg Mass shot 80 kg Permissible maximum bore pressure 250,000,000 Pa Projectile weight 5 kg Chamber Volume 5 0.05 m ³ The total mass of the walls of the chamber 6, the walls 11 and the charge 4 40 kg Mass of charge 3 5 kg The movement of the chamber 6, the baffle 11 and the projectile 7 in the barrel 1 to the passage of the baffle 11 past the holes 9 1m The speed of the chamber 6, the partition 11 and the charge 4 when passing the partition 11 at the holes 9 1168 m / s Chamber Volume 6 0.05 m ³ Mass of charge 4 30 kg The mass of the walls of the chamber 6 and the partition 11 5 kg Muzzle velocity of the projectile (not less) 3000 m / s

Claims (2)

1. Long-range gun containing a barrel with a breech and ammunition with explosive charges, made in the form of two or more separate chambers sequentially located along the barrel, characterized in that the chambers are connected to the projectile through each other through the neck of the sleeve, while in the channel bore holes are made at a distance from the beginning of the bore, less than the total length of the first and second chambers, but greater than the length of the first chamber. 2. The gun according to claim 1, characterized in that the chambers are interconnected by means of the neck of the sleeve and the partition, which is the bottom of the second chamber.

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