RU2532670C1 - Case-free cartridge "tandem" - Google Patents

Abstract

FIELD: weapons and ammunition.

SUBSTANCE: invention relates to ammunition, in particular, to case-free cartridges for smooth-bore small arms. A case-free cartridge comprises a bullet with a hollow cylindrical body, a missile charge from combustible material and an ignition charge. The bullet body is equipped with a solid head part with a core. The tail part of the bullet body is expanded and pressed by a sprocket in a cone-shaped manner. In the middle of the cylindrical part of the bullet body there is a circular groove with through holes, in which the ignition charge is placed.

EFFECT: simplified cartridge design.

3 cl, 1 dwg

Description

The invention relates to the field of ammunition for smoothbore small arms.

Known silent cartridge (patent RU No. 2309377) containing a hollow bullet, a piston, a tube with a charge and a capsule. The disadvantage of this device is that the cartridge has a complex structure that impedes its production.

Known silent cartridgeless cartridge (patent RU No. 2490587) containing a piston bullet, cylinder liner and capsule. The piston bullet is made with an external shoulder located on its back. A cylinder with a charge, a capsule and an inner shoulder is mounted on the outside of the piston bullet. The capsule is placed in the bottom of the sleeve. The inner flange is made on a cylinder cut. The outer diameter of the shoulder of the bullet-piston is larger than the inner diameter of the shoulder of the cylinder. The disadvantage is that the piston bullet is placed inside the cylinder liner, thus forming a closed system. The gas pressure acts with equal force on the bullet and the bottom of the liner, not allowing the pool to accumulate sufficient kinetic energy to develop a high initial flight speed.

The closest in technical essence to the invention is a cartridgeless cartridge (patent RU No. 2111686) containing a bullet, a propellant charge from combustible material and an igniter capsule. The bullet is made in the form of a hollow cylinder, equipped with a membrane-wad associated with the igniter capsule rod, passing along the axis of the bullet. The propellant charge is placed in the cavity of the bullet behind the membrane. The disadvantage of the prototype is that the ratio of the mass and size of the bullet, as well as the hollow execution of the head of the bullet lead to the rapid attenuation of the speed of the bullet.

Objectives of the claimed invention is to increase the kinetic energy of the ammunition and improve its ballistic properties.

The technical results of the invention are:

- simplification of the design of the cartridge, contributing to the simplification of the design of the barrel of small arms (the barrel is performed without rifling, and there is no need for a mechanism for ejecting a spent cartridge case);

- improvement of aerodynamic properties and striking characteristics.

These technical results are achieved by the fact that in the well-known cartridgeless case containing a bullet with a hollow cylindrical body filled with a propelling charge of combustible material, and an igniter capsule, the bullet body is equipped with a monolithic head part with a core. For reliable fixation in the chamber, the tail of the bullet body is conically expanded. So that the propellant charge does not spill out of the cartridge, the edges of the tail are compressed with an asterisk. In the middle of the cylindrical part of the bullet’s body there is an annular groove with seed holes in which the igniter capsule is placed, while to exclude mechanical impact on the capsule outside the barrel, it is recessed into the cartridge case by 0.5 mm.

The body of the bullet is made all-metal.

The bullet head has a hemispherical shape.

Depending on the equipment of the core, a bullet can be executed in the following options:

- armor-piercing;

- incendiary;

- tracer;

- and etc.

The drawing shows a General view of the cartridge:

1 - hollow bullet body;

2 - monolithic warhead;

3 - core;

4 - propelling charge;

5 - an annular groove;

6 - seed holes;

7 - primer igniter.

The device operates as follows. Upon initiation of the igniter capsule, a propellant charge is ignited. The resulting gases push the bullet along the bore, giving it the necessary kinetic energy. The stability of the bullet in flight is ensured by the placement of its center of gravity in the head and the "skirt", which acts as a stabilizer.

The ratio of cartridge length and caliber is 1: 3.

Claims (3)

1. A cartridgeless case containing a bullet with a hollow cylindrical body filled with a propelling charge of combustible material, and an igniter capsule, characterized in that the bullet body is equipped with a monolithic head part with a core, the tail part of the bullet body is conically expanded and compressed by an asterisk, and in the middle the cylindrical part of the bullet body is an annular groove with through holes in which the igniter capsule is located. 2. The cartridge according to claim 1, characterized in that the bullet body is made of all-metal. 3. The cartridge according to claim 1, characterized in that the bullet head has a hemispherical shape.