RU2428652C1 - Cartridge - Google Patents

Abstract

FIELD: weapons and ammunition. ^ SUBSTANCE: cartridge includes case and shell, which are connected by a link destructed during firing. Shell includes body with driving band above its thickened bottom, fairing, pyrotechnic retarder, charge of black rifle powder and stick of lighting compound. Body is made in the form of shell and fairing is made in the form of cap. Fairing is connected to body by means of a link destructed during shell operation. Pyrotechnic retarder is installed in the hole of body bottom. Charge of black rifle powder is arranged in end groove of body bottom. Bottom of body is made from plastic material with outer annular groove in front of driving band and end projections. Fairing is equipped with cylindrical extension piece at front end of which there is outer diametrical thinning of its wall. Lighting compound is pressed into fairing and cylindrical extension piece. Fairing with its cylindrical extension piece is put on plastic body till lighting compound is borne against it. End projections of the body are arranged in end slots of lighting compound, and their link destructed during shell actuation is formed with rolling of some part of thinned wall of cylindrical extension piece into annular groove of the body. ^ EFFECT: higher reliability and safety of cartridge operation. ^ 2 cl, 2 dwg

Description

The invention relates to signal cartridges for hand grenade launchers, but can also be used in stationary security systems to supply a light signal in case of violation of the boundaries of the protected area.

The most common such device is a “rocket fired from a hand-held rocket launcher” for the purpose of delivering light signals in army units, as well as by civilian services for the same purpose and for igniting harmful gas emissions during accidents on their main pipelines, described in the “Operation Safety Rules condensate pipelines and main pipelines for liquefied gases ", Ministry of the gas industry, M., 1978, pp. 87-89, and adopted as an analogue for the present invention. This missile is a cylindrical checker made of a lighting composition ("star"), which, together with a propelling charge, is placed and secured by a wad in a sleeve. The cartridge formed in this case is used for firing from a hand-held rocket launcher in the form of a pistol with a smooth barrel of 26 mm caliber.

The disadvantages of the analogue include the following:

- low range and especially firing accuracy, because The “star” is not stabilized in flight and therefore randomly behaves, deviating from the trajectory set in the shot in any direction;

- unmasking the firing position, as The "star" burns from the moment of departure from the barrel of the rocket launcher;

- low visibility of the "star" in the fog, snow and rain due to its small size and significant combustion as it rises, because it burns from all sides.

These disadvantages of the analogue are mainly eliminated in the well-known American signal cartridge with white stars M585, described in "Jane's Ammunition Handbook Edited by Terry J Cander and Charles Q Cutshaw Ninth Edition 2000-2001" on page 572 and adopted as a prototype for the present invention . The prototype consists of a metal sleeve and a grenade attached to it by a bond that is destroyed during a shot. The grenade has an aluminum case in the form of a glass with a leading belt over its rather thick bottom, the front end of which is covered by a plastic cowl in the form of a cap with an annular outer protrusion at the open end, by which it is latched through an o-ring into the mating groove on the inner surface of the case. Five “stars” are sequentially installed in the body cavity - channel pieces of lighting composition, enclosed on a cylindrical surface in a shell made of cartridge paper with phenol impregnation and resting on the bottom of the case, which contains pyrotechnic moderator and charge of gun powder in the end recess for igniting the “stars "And ejecting them from the grenade body. This occurs after the pyrotechnic moderator burns out at an altitude of 167 m, while under the pressure of the products of combustion of the charge of the smoky gunpowder the cowl is thrown off, the body is braked, and the “stars” are pushed out of the body forward and create a single glow center.

The disadvantages of the prototype include:

1) the absence in the design of the grenade of elements preventing the rotation of the “stars” relative to each other and relative to the body when twisting the grenade in the barrel of the grenade launcher. This can lead to their mutual rotation and creates the danger of either their unauthorized ignition even during firing or the absence of stabilizing rotation of the “sprockets” together with the body at the point of operation of the pyrotechnic moderator, which will lead to chaotic ejection and expansion of the “sprockets” and will not allow creating a stable form a single focus of light;

2) nonparticipation of at least part of the aluminum casing during the burning of “stars”, which could significantly increase the size of the burning center and its brightness;

3) the absence in the grenade of elements providing for fastening of “stars” in its body without the possibility of their longitudinal movement and collisions during firing, which, as in paragraph 1), can lead to their premature operation or destruction;

4) the presence of “stars” shells of cartridge paper, which significantly reduces their useful mass and combustion area;

5) a large mass of the grenade body, which can be dangerous when firing a prototype at the location of its troops;

6) increased wear of the grenade launcher barrel due to interaction with the aluminum leading grenade body girdle;

7) smaller than that of the analogue, but still there is a decrease in the combustion surfaces of the "stars" as they fly away from the place of release from the grenade.

The technical task of the invention is to eliminate the disadvantages of the known signal cartridges, namely increasing their reliability and safety, stability and quality of the structure, as well as reducing the wear of the grenade launcher and the danger when using the cartridge in the location of its troops.

The solution of the technical problem according to the present invention is achieved by the fact that:

- in a cartridge containing a cartridge case and a grenade attached to it by a bond that is destroyed during firing, including a cup-shaped case with a leading belt over its thickened bottom, a cap-shaped cowl, attached to the body that is destroyed by a grenade when triggered by a grenade, a pyrotechnic moderator installed in the bottom hole case, the charge of smoky gunpowder, placed in the end recess of the bottom of the case, and a piece of lighting composition, the bottom of the case is molded from plastic with an outer annular groove in front of the drive belt and end stupas from the side of the open end, the fairing is equipped with a cylindrical extension jointed with it, at the front end of which an external diametrical thinning of its wall is made, the lighting composition is pressed into the fairing and its cylindrical extension, and its end is molded with end grooves under the end protrusions of the body, the cowl with its cylindrical extension is dressed on a plastic case until it stops in it with a lighting composition and with the placement of the end protrusions of the case in the response end grooves of the illuminator composition, and their destruction when the grenade is triggered, the bond is formed by rolling part of the thinned wall of a cylindrical extension into the annular groove of the body.

In a particular case:

- fairing and cylindrical extension made of aluminum alloy.

The essence of the invention is illustrated in the drawing, where figure 1 and figure 2 shows the cartridge of the present invention.

The cartridge consists of:

- sleeves 1 and grenades 2, connected by destructible when fired by a bond, such as glue;

- grenade 2 includes a plastic case 3 and a fairing with a cylindrical extension 4 made of aluminum alloy;

- an annular groove 9 is made on the housing 3 in front of the driving belt 8, an end recess 10 is molded in the bottom, in which a charge 5 of smoky gunpowder is placed and an axial hole 11 in which a pyrotechnic moderator 6 is installed, and end protrusions 12 are installed along the perimeter;

- a lighting fixture 7 is pressed into the fairing with a cylindrical extension 4, the end of which is molded to follow the cavity of the housing 3, except for the end recess 10 in it, and is equipped with end grooves 13;

- the connection of the housing 3 and the fairing with a cylindrical extension 4 is made by rolling the thinned edge of the latter into the annular groove 9 of the first, while ensuring their tight compression against each other in the axial direction.

From the description of the cartridge of the present invention, it is seen that it:

- the absence of axial clearance between the housing 3 and the lighting composition 7 is ensured during the assembly of the grenade 2;

- the absence of a radial clearance between the lighting composition 7 and the fairing with a cylindrical extension 4 is provided by pressing the first into the cavity of the second;

- the lack of rotation of the lighting composition 7 relative to the housing 3 when fired by the placement of the protrusions 12 of the latter in the grooves 13 of the first;

- housing 3 has a minimum weight, because made of plastic and there is no cylindrical extension cord;

- mainly a plastic lead belt 8 on the housing 3 interacts with the barrel of the grenade launcher;

- the lighting composition 7 has the maximum possible and practically unchanged end surface of the combustion, because partially repeats the extended inner surface of the housing 3, has end grooves 13, and, in addition, a fairing metal with a cylindrical extension 4 takes part in its combustion.

Thus, in the cartridge according to the invention almost all the disadvantages of other known cartridges of the same purpose are eliminated.

Claims (2)

1. A cartridge containing a cartridge case and a grenade attached to it by a bond that is destroyed during firing, including a cup-shaped case with a guiding belt over its thickened bottom, a cap-shaped cowl, bonded to the body that is destroyed by a grenade when triggered by a grenade, a pyrotechnic moderator installed in the bottom hole case, the charge of smoky gunpowder, placed in the end recess of the bottom of the case, and a piece of lighting composition, characterized in that the bottom of the case is molded from plastic with an outer annular groove in front of the leading and end protrusions from the side of the open end, the fairing is equipped with a cylindrical extension jointed with it, at the front end of which an outer diametrical thinning of its wall is made, the lighting composition is pressed into the fairing and its cylindrical extension, and its end is molded with end grooves for end protrusions of the housing while the fairing with its cylindrical extension is dressed on a plastic body until it stops in it with a lighting composition and with the placement of the end protrusions of the body in the reciprocal end in the grooves of the lighting composition, and their connection destroyed by the operation of the grenade is formed by rolling part of the thinned wall of a cylindrical extension into the annular groove of the body. 2. The cartridge according to claim 1, characterized in that the fairing and the cylindrical extension are made of aluminum alloy.

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