RU2564780C2 - Muzzle brake - Google Patents

Abstract

FIELD: armaments and ammunition.

SUBSTANCE: muzzle device contains a casing for installation on the muzzle part of the barrel. Internal cavity of the casing is made as surface obtained by rotation of the oval generatrix, the oval is created by segments of the circles at end faces and by straight areas connecting the segments of circles in its middle part, around the axis in plane of this oval.

EFFECT: reduction of weapon recoil and increased barrel purging.

6 dwg

Description

The invention relates mainly to small arms, to the design of the barrel, in particular, muzzle devices.

Known muzzle device containing expansion chambers and a bullet channel formed by sequentially arranged elements of the same configuration. The cavities of the expansion chambers are made in a toroidal shape with conical gas cut-offs forming inlet cross-sectional sections in cross section. In the expansion chambers of this device, a rotation of the gas stream is created, which breaks the steady outflow of the main stream of gases, preventing the escape of gases through the bullet hole (Patent RU No. 2202751 C2, 04/20/2003).

The disadvantage of this device is that during the shot, the gases entering the toroidal cavity of the expansion chamber are unwound along the radius surface of the torus and, almost without losing speed, cut across the motion of the main gas flow, converting the laminar motion of the main flow into a turbulent chaotic motion, which is achieved a sharp decrease in the expiration rate.

Slowing the gas stream in the bullet channel of the expansion chambers significantly complicates their effective purging and virtually eliminates the purging of the barrel.

The closest in technical essence and the technical result achieved is a muzzle device (prototype) containing expansion chambers in the form of a circular cylinder with end surfaces in the form of half a toroid or an elliptical toroid connected to the bullet channel by gas channels (slot with a conical gas cutoff), which are made with a smooth surface closed in a longitudinal section (except for the channels connecting the gas chambers to the barrel channel) with the possibility of creating a closed vortex of porosity in them gas, the gas channels being tangent to the generatrix of the expansion chamber, the area of which ensures that the expansion chamber is filled with powder gases before the bullet leaves the receiver or reaches the gas channels of the next expansion chamber (US Pat. RU No. 2366884 C2, 09/10/2009).

Longitudinally closing the expansion chamber is structurally ensured by a central cylindrical protrusion with a bullet channel and a conical bell at the end, as well as a conical surface on a cutter located on the elements of the same configuration, partially entering the conical bell of the central protrusion with the formation of conical gas channels.

A disadvantage of the described device is the lack of effective purging of the barrel and expansion chambers, caused by the longitudinally closed surface of the expansion chambers, and, consequently, the impossibility of generating rarefaction waves in the barrel channel and in the expansion chambers. The expansion chambers of the device represent dead-end zones for gases, which make it possible to use the energy of the gases accumulated in the chambers to counteract the outflow of the main stream of gases, without the possibility of their active ventilation. Virtually eliminated and purge the barrel.

The aim of this invention is to provide effective blowdown of the barrel.

This goal is achieved by the fact that in the muzzle device containing the housing for installation on the muzzle of the barrel, according to the invention, the internal cavity of the housing is made in the form of a surface obtained by rotation of the generatrix of the oval formed by segments of circles on the ends and rectilinear sections connecting segments of circles in its middle part , around an axis lying in the plane of this oval.

The execution of the internal cavity open in the longitudinal direction in the central part (due to the absence of a central protrusion and a conical cutter) greatly simplifies the design of the muzzle device and reduces its weight, and the effective formation of a rarefaction wave in the barrel channel is ensured by the selection of the radii of curvature and the size of the toroidal end surfaces.

In FIG. 1 shows a muzzle device in which the internal cavity in its central part is made in the form of a conical surface, FIG. 2 - the same front view.

In FIG. 3 shows a muzzle device in which, for ease of maintenance, the housing is detachable; FIG. 4 is the same front view.

In FIG. 5 shows a muzzle device with increased noise and flame suppression, containing two consecutively located internal cavities connected by a bullet channel, in FIG. 6 is the same front view.

The muzzle device (Fig. 1, 2) contains a housing 1 with a hole 2 for releasing a bullet, coaxial with the axis of the bore 3, the cavity of the device 4 and grooves 5, the number and location of which is selected based on ensuring stabilization of the barrel during automatic shooting.

The muzzle device (Fig. 3, 4) contains a housing 6, a cover 7 with an opening for releasing a bullet 8, the cavity of the device 9. The muzzle device (Fig. 5, 6) contains a housing 10, an adapter 11, an insert 12, a cover 13 with an opening for Departure bullet 14, cavity 15.

The muzzle device (Fig. 1, 2) works as follows: after a bullet leaves the barrel, powder gases enter the cavity of the muzzle device and partially leave it, the rest dynamically acts on the front inner part of the body, compensating for recoil force and sliding along the inner surface of the body, makes a revolution inside him. Further, she also leaves the muzzle device, forming a rarefaction wave in the barrel channel, which, in turn, provides its purge and removes powder gases and products of incomplete combustion of gunpowder.

The muzzle device (Fig. 3, 4) works as follows: after a bullet leaves the barrel, powder gases enter the cavity of the muzzle device and partially leave it, the remaining part dynamically acts on the front inner part of the body, compensating for recoil force and sliding along the inner surface of the body section makes a revolution inside him. Further, she also leaves the muzzle device, forming a rarefaction wave in the barrel channel, which, in turn, provides its purge and removes powder gases and products of incomplete combustion of gunpowder.

The muzzle device (Fig. 5, 6) works as follows: after the bullet leaves the barrel, powder gases enter the first cavity of the muzzle device and partially leave it, the rest dynamically acts on the surface of the insert, compensating for recoil and sliding along the inner surface of the first cavity makes a revolution inside her. Then it leaves the first cavity of the muzzle device, forming a rarefaction wave in the bore, which, in turn, provides its purge and removes powder gases and products of incomplete combustion of gunpowder. Upon receipt of the powder gases from the first cavity into the second cavity of the muzzle device, part of the powder gases leaves the muzzle device, the remaining part dynamically acts on the front inner surface of the lid, further compensating for the recoil force. Then it leaves the second cavity of the muzzle device, forming a rarefaction wave in the first cavity and providing its purge, as well as additional purge of the barrel. In this case, after the bullet takes off, the powder gases are actively removed from the barrel and cavities of the sections of the muzzle device, reducing carbon formation in the barrel channel and in the cavities of the muzzle device. If necessary, the number of cavities can be increased.

Thus, the muzzle device reduces the recoil of the weapon during firing and at the same time provides effective blowing of the barrel, powder gases are actively removed from the barrel, reducing carbon formation in its channel.

Claims (1)

A muzzle device containing a housing for installation on the muzzle of the barrel, characterized in that the internal cavity of the housing is made in the form of a surface obtained by rotating the generatrix of the oval formed by segments of circles on the ends and rectilinear sections connecting segments of circles in its middle part, around an axis lying in the plane of this oval.

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