Shell with gas hanger

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.

3 dwg

 

The invention relates to the field of fire shotguns and can be used to create high-precision weapons systems, which have to meet stringent requirements on the wear resistance of the inner surface of the barrel, precision and power of the shot.

Known projectile with a gas suspension containing a smooth cylindrical surface, made in the form of gas suspension device for creating pressure in the raw gas layer made in the form of a feed cavity in the body of the projectile, which is connected with the outer cylindrical surface through the feeding device (see article: Boltanski A. P. "On the possibility of using non-contact centering the projectile in smoothbore gun" in the proceedings of the Interregional scientific-of Techn. conference "Multi-tracked and wheeled machine: development, production, combat effectiveness, science and education. Omsk, 2002. Part 1. - S. 43-45 and U.S. patent 3001609, CL 184-18, 1962).

Also known projectile with a gas suspension containing smooth cylindrical part, in which the cavity power to create pressure in the raw gas layer connected to the outer cylindrical surface through the feeding device, and this cavity power filled with a substance having a high burning rate, and is connected to the back of the part of the projectile through the opening, hosts thermite fuse (RF Patent No. 2285226 "Projectile with a gas suspension", IPC F42B 14/04, publ. 10.10.2006).

A disadvantage of the known constructions is the high consumption of combustible material used to create pressure in the cavity gas supply suspension of the projectile, since a significant portion formed after the combustion gases useless for operation of the gas suspension is dropped through the hole where the wick, which leads to an increase in the cost of the shot. This circumstance dictates the necessity to have in the body of the projectile is relatively large cavity to accommodate a large mass of combustible material that is useless for the main functions performed by the projectile increases its dimensions and weight, thereby reducing the firing range.

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

This technical result is achieved by the fact that the projectile with a gas suspension containing smooth cylindrical part, in which the cavity power to create pressure in the raw gas layer connected to the outer cylindrical surface through the feeding device, and this cavity power filled with a substance having a high burning rate, and is connected with the rear portion of the projectile through thermic fuse, with the according to the claimed invention thermite wick made in the form of a strip, placed on the inner wall of the cavity power and bogatoi to the wall of the spring-fifth.

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

- Fig.1 schematically shows the barrel of the weapon with the installed projectile before firing;

- Fig.2 shows schematically the device of the projectile before firing;

- Fig.3 schematically shows a cross-section of the projectile after the combustion of the combat charge, wick and combustible material, filling the cavity power, during its movement toward the muzzle end.

The projectile consists of combat 1 and a smooth cylindrical guide part 2, sleeve 3 with a powder charge 4 and the cap 5. The projectile is installed in the rear portion 6 of the shaft 7, having a striking mechanism 8. Guide part 2 contains the cavity of nutrition 9 (Fig.2), which is connected to the outer surface smooth cylindrical guide part 2 through the feeding device in the form of small-diameter holes 10, spaced evenly around the circumference in two rows. The cavity of the power supply 9 is filled with substance 11 having a high burning rate, and is connected to the outer side of the rear side 12 of the projectile through thermite fuse 13, made in the form of a strip placed inside the cavity of the power supply 9, and bogatoi to the rear side 12 of the fifth 14 with powerful springs 15. Between the guide part 2 and the inner surface is Yu shaft 7 there is a gap 16.

The use of projectile (shot) is as follows.

When the shock mechanism 8 on the cap 5 is ignited propellant charge 4, resulting in a pressure of the gaseous combustion products from the back of the projectile under the influence of this pressure, the projectile out of the cartridge 3 and moves along the shaft 7 (to the right in the drawing). Under the action of high temperature combustion of the powder charge 4 is the ignition of thermite fuse 4, the flame from which the combustible matter 11, it burns, resulting in the cavity 9 there is a high pressure gaseous combustion products, which expire through the openings 10 into the gap 16 between the guide part 2 and the inner surface of the barrel 7, forming a gas bearing layer with stiffness and bearing capacity, inherent gas radial bearings, in connection with which the projectile "hung out" in the barrel 7 and continues to move along the shaft 7 without touching its inner surface. At the same time (Fig.3) burnt and turned into gaseous combustion products) wick 13 leaves its place to the heel 14, moving under the action of springs 15, which is pressed against the rear side 12 and terminates communication between the chamber 9 and the bore 7 from the rear side 12 of the projectile, preventing leakage of gases from the cavity 9 in the STV is La 7. The latter allows to maintain the pressure in the cavity 7 is high during the whole time of motion of the projectile in the barrel 7, i.e., to ensure high rigidity and load bearing capacity of the gas suspension pig when it moves relatively long barrel (the ratio of the length of the barrel to its caliber 50).

Preventing leakage of products of combustion of combustible material located in the cavity of the power supply 9 gas suspension, allows to reduce the dimensions of this cavity (respectively - and the size of the projectile, and its mass), as well as to reduce the mass of combustible material. All this together makes it possible to reduce the cost of the projectile (the cost of the shot) and to increase the firing range.

Shell gas suspension containing smooth cylindrical part, in which the cavity power to create pressure in the raw gas layer connected to the outer cylindrical surface through the feeding device, and this cavity power filled with a substance having a high burning rate, and is connected with the rear portion of the projectile through thermic fuse, wherein thermite wick made in the form of a strip placed on the inner wall of the cavity power and bogatoi to the wall of the spring-fifth.



 

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