UA58651A - Barrel - Google Patents

Abstract

This invention relates to fire rifle arms with high initial velocity. The barrel includes a metal cylinder with installed inside breech end for placing the cartridge and opening in whole length. To increase effectiveness of application of the fire arms the inner walls of the barrel are made smooth, with transition from round section to triangular with rounded angles, and with screwing round own axis.

Description

Description of the invention

The invention relates to the field of weapons, in particular to small arms, namely to firearms 2 small arms with a high initial bullet flight speed, and can be used in combat small arms.

A well-known barrel containing a metal cylinder, with a breech located inside for placing a cartridge and a hole along its entire length, with helical thread grooves made on its inner walls, which give the bullet a rotational movement around its own axis during flight (gyroscopic effect). /1/. 70 The disadvantages of the well-known barrel are the incomplete use of the energy of the powder charge for throwing the bullet, because the area of the walls of the inner surface is high, then part of the energy of the powder gases goes to its heating, as a result of which the efficiency of the powder gases is reduced, which negatively affects the addition bullets of high initial speed, in addition, part of the energy of the powder gases is spent for the spiral threading of the shell of the bullet itself. 12 A closer technical solution is the barrel chosen for the prototype, which contains a metal cylinder, with a breech located at one end inside for placing a cartridge, and an internal hole along the entire length, which goes to a conical taper, and with threaded grooves that add rotational motion (gyroscopic effect) to the throwing ball. /2/.

The disadvantages of the known barrel are the increased steepness of the rifling, which at a high initial speed of the bullet contributes to an increase in the tension in the shell of the bullet and its destruction, as well as the destruction of the inner surface of the barrel itself and its overheating.

The invention is based on the task, by changing the design of the barrel, to increase the effective shooting distance and increase the initial velocity of the bullet in small arms.

The solution to the technical problem, in a barrel containing a metal cylinder, with a breech located at one end inside for placing a cartridge, and an internal hole along the entire length, which goes to a conical "narrowing", is to make the barrel identical in internal shape and dimensions in the breech part for ammunition of small arms, and on the other part of it a gradual transition from a round cross-section to a triangular one, with rounded corners, and with twisting (turning) around its own axis.

The essence of the invention is that this barrel, which has the ability to use existing small arms ammunition for shooting, due to a special design, has the ability to increase the initial speed (CZ of the bullet's flight, and at the same time avoid the destruction of both the shell of the bullet and the inner surface of the walls of the barrel, which in turn increases the efficiency of powder gases for throwing a bullet, which in turn increases the efficiency, penetration of the bullet and the smoothness of the trajectory of the bullet.

A comparative analysis of the claimed technical solution with the prototype shows that the claimed 325 barrel differs in that the inner hole, along its entire length, instead of a conical narrowing, and about the thread cut on the walls of the barrel, has a smooth transition along the long barrel from a round cross-section in the breech to a triangular one (with rounded corners) at the opposite end, with twisting (turning) around its own axis, as a result of which a "forced rotational movement of the ball hurling around its own axis (gyroscopic effect) is achieved." WITH

Thus, the claimed barrel meets the "novelty" criterion of the invention. The essence of the invention is explained with drawings, where Fig. 1 shows the structural image of the trunk, Fig. 2, 3, 4 show a smooth transition

From" the cross-section of the barrel from a round cross-section to a triangular one, Fig. 5, b, 7 show the schemes of the advancement of a projectile ball along the bore of the barrel and at the same time its forced deformation.

The barrel structurally consists (see fig. 1) of a metal body 1, cylindrical in shape with a hole 2 made along its entire length with different diameters B, D, D, which smoothly emerge from the absolutely round and i-th shape in the breech part 4, in triangular, with rounded corners at the opposite end 5, and made of

Ge | by twisting (turning) Z around its own axis along the entire length from 0 to 360 degrees and more (depending on the ammunition used). b The trunk works as follows (see fig. 5, 6, 7.). Fig. 20 Cartridge 6, fed to the line of fire in the breech 4, and locked by the shutter 7, is initiated by the method of impact of the striker 8, as a result of which, the bullet U with an empty cavity 10 inside, under the influence of powder gases 11, begins its movement. Because the cross-section of the barrel smoothly transitions from a round shape at a point with a diameter of G to a triangular shape, then under the influence of the walls of the barrel, the ball 9 also begins to change its external shape, while the hollow cavity of the ball 10 decreases in size A because the transition of the barrel opening from round shape into a triangular one 29 occurs with twisting (turning) (see Fig. 2, 3, 4.) around its own axis, then the ball 9 starts in. perform a forced rotational movement around its own axis. At the moment of leaving the barrel, the ball 9 completely changes its original shape, and from round, it turns into a trihedral one with rounded corners, while the cavity 10, as a result of the deformation of the ball 9, completely disappears ("snaps").

An increase in the effectiveness of the application of the claimed barrel, compared to the prototype, is achieved due to the absence of a screw thread, a high initial speed of the bullet and its stability in flight, an improved flatness of the shooting trajectory, and an increase in the penetration of the shot.

Sources. 1. Hand firearms. V.E. Markevich. 1937, Edition of the Leningrad Artillery Academy of the Red Army named after Dzerzhinsky, chapter 5, paragraph 54-73, pages 196-210, 213-215. for 2. Basis of the Design of Automatic Weapons. A.A. Blagonravov 56 Perspective! development of ballistic properties of small arms. Publication of the Artillery Academy of the Red Army named after Dzerzhinsky,

Leningrad, 1934

Claims (2)

2 Formula of the invention 1. A barrel containing a metal cylinder with a breech located inside for placing a cartridge and a hole along the entire length, which is distinguished by the fact that the inner walls of the barrel are made smooth, 70 transitional from a round cross-section to a triangular one with rounded corners, and made to twist around own obi 2. A barrel containing a metal cylinder with a breech located inside to accommodate a cartridge and an opening along its entire length, which goes all the way to a conical taper, which is distinguished by the fact that the inner walls of the barrel are made by changing the cross-sectional shape of a smooth transition from a round cross-sectional shape in the breech part in a triangular shape at the opposite end of the barrel, with rounded corners, and a twist around its own obi. " "- Zo yu (Se) (ee) And c) - and? 1 (ee) (o) 1 - 60 b5