RU2542809C1 - Shell with gas hanger - Google Patents

Abstract

FIELD: weapons and ammunition.

SUBSTANCE: shell with gas hanger includes a smooth cylindrical part, in which there is a feed cavity connected to the outer cylindrical surface through feed devices. The feed cavity is intended to create pressure in a carrying gas layer. The feed cavity is filled with substance having high combustion speed. The feed cavity is connected to the rear part of the shell through a thermite wick. The latter is made in the form of a gasket arranged on the inner wall of the feed cavity and pressed to this wall with a spring-loaded shoe.

EFFECT: reduction of the shell size and increase of firing distance.

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Description

The invention relates to the field of smooth-bore firearms and can be used to create high-precision weapon systems, which are subject to stringent requirements for wear resistance of the barrel’s inner surface, high accuracy and power of a shot.

A known projectile with a gas suspension containing a smooth cylindrical surface, made in the form of a gas suspension with a device for creating pressure in the carrier gas layer, made in the form of a supply cavity in the body of the projectile, connected to the outer cylindrical surface through the feeding device (see article: Bolshtyansky A .P. "On the possibility of using non-contact centering of a projectile in a smoothbore gun" in the collection of materials of the Interregional scientific and technical conference "Multipurpose tracked and wheeled vehicles: times work, production, combat effectiveness, science and education. Omsk, 2002. Part 1. - P. 43-45, as well as US patent 3001609, CL 184-18, 1962).

Also known is a projectile with a gas suspension containing a smooth cylindrical part in which a feed cavity is made to create pressure in the carrier gas layer, connected to the outer cylindrical surface via feed devices, this feed cavity being filled with a substance having a high burning rate and connected to the rear part of the projectile through the hole in which the termite wick is placed (RF Patent No. 2285226 "A projectile with a gas suspension", IPC F42B 14/04, publ. 10.10.2006).

A disadvantage of the known designs is the high consumption of combustible substances used to create pressure in the cavity of the gas suspension of the projectile, because a significant part of the gases formed after its combustion is useless for the gas suspension to work, it is thrown out through the hole in which the wick is installed, which leads to an increase in the cost of the shot. The same circumstance dictates the need to have a relatively large cavity in the body of the projectile to accommodate a large mass of combustible material, which is useless for the main function performed by the projectile, increases its dimensions and mass, thereby reducing the firing range.

The technical result of the invention is to reduce the cost of a shot and increase the firing range.

The specified technical result is achieved in that in a projectile with a gas suspension containing a smooth cylindrical part, in which a feed cavity is made to create pressure in the carrier gas layer, connected to the outer cylindrical surface through feed devices, and this feed cavity is filled with a substance having a high speed combustion, and connected to the back of the projectile through a termite wick, according to the claimed invention, the termite wick is made in the form of a gasket placed on the inner wall olosti nutrition and spring-loaded heel pressed to this wall.

The device of the projectile with gas suspension is illustrated in the drawing, where

- figure 1 schematically shows the barrel of the weapon with a shell installed in it before the shot;

- figure 2 shows schematically the design of the projectile before the shot;

- figure 3 schematically shows the cross section of the projectile after the combustion of the warhead, wick and combustible substance filling the feed cavity, while it is moving towards the muzzle end.

The projectile consists of a combat 1 and a smooth cylindrical guide part 2, a sleeve 3 with a powder charge 4 and a capsule 5. The projectile is installed in the breech part 6 of the barrel 7 having a percussion mechanism 8. The guide part 2 contains a power cavity 9 (figure 2), which connected to the outer surface of the smooth cylindrical guide part 2 through the feeding device in the form of holes of small diameter 10, arranged uniformly around the circumference in two rows. The food cavity 9 is filled with a substance 11 having a high burning rate, and is connected to the outside of the rear part 12 of the projectile through a thermite wick 13, made in the form of a gasket placed on the inside of the food cavity 9, and pressed against the back part 12 by the fifth 14 using powerful springs 15. Between the guide part 2 and the inner surface of the barrel 7 there is a gap 16.

The use of a projectile (shot) is as follows.

When the shock mechanism 8 acts on the capsule 5, the powder charge 4 is ignited, as a result of which the pressure of the gaseous products of combustion from the back of the projectile appears, under the influence of this pressure, the projectile exits the sleeve 3 and begins to move along the barrel 7 (to the right in the drawing). Under the influence of the high combustion temperature of the powder charge 4, the termite wick 4 is ignited, the flame from which is transferred to the combustible substance 11, it burns, as a result of which high pressure of the gaseous products of combustion arises in the cavity 9, which flow through the openings 10 into the gap 16 between the guide part 2 and the inner surface of the barrel 7, forming a carrier gas layer having the rigidity and bearing capacity inherent in gas radial suspensions, in connection with which the projectile is "hung" in the barrel 7 and continues to move s along the barrel 7 without touching its inner surface. At the same time (Fig. 3), the burnt (turned into gaseous products of combustion) wick 13 gives way to a heel 14 moving under the action of springs 15, which is pressed against the back side 12 and breaks the message between the cavity 9 and the bore 7 from the back of the projectile 12 , preventing the leakage of gases from the cavity 9 into the bore of the barrel 7. The latter allows you to keep the pressure in the cavity 7 high for the entire duration of the movement of the projectile in the barrel 7, i.e. provide high rigidity and bearing capacity of the gas suspension of the projectile when moving along a relatively long barrel (the ratio of barrel length to its caliber is 50 or more).

Prevention of leakage of the products of combustion of a combustible substance located in the supply cavity 9 of the gas suspension makes it possible to reduce the dimensions of this cavity (respectively, both the dimensions of the projectile and its mass), as well as reduce the mass of the combustible substance. All this taken together allows you to reduce the cost of the projectile (cost of a shot) and increase the firing range.

Claims (1)

A projectile with a gas suspension, comprising a smooth cylindrical part in which a feed cavity is made to create pressure in the carrier gas layer, connected to the outer cylindrical surface via feed devices, this feed cavity being filled with a substance having a high burning rate, and connected to the back of the projectile through a termite wick, characterized in that the termite wick is made in the form of a gasket placed on the inner wall of the food cavity and the spring-loaded fifth is pressed against this wall.

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