CS244973B1 - Silencer and pressure damping from large caliber weapons - Google Patents

Abstract

The subject of the invention is a noise and pressure damper for firing from large-caliber weapons in test areas. The purpose of the invention is to reduce noise and pressure when firing from large-caliber weapons. The stated purpose is achieved by a structural arrangement according to the invention, the essence of which is an expansion tube (1), the content and cross-section of which are significantly larger than the content and cross-section of the barrel. Exhaust gases flowing from the barrel at high speed and pressure at the inlet to the expansion tube (1) expand as a result of a change in cross-section and content. Their speed, pressure, impact on the atmosphere and thus the intensity of noise and pressure are reduced.

Description

The subject of the invention is a silencer and pressure suppressor for shooting from large caliber weapons in test areas. The purpose of the invention is to reduce the noise and pressure when shooting from large caliber weapons.

This purpose is achieved by a structural arrangement according to the invention, the essence of which is an expansion tube (1), the content and cross-section of which are substantially greater than that of the barrel. Exhaust gases flowing mainly from high velocity and pressure at the inlet to the expansion web (1) expand as a result of the change in cross-section and content. Their speed, pressure, impact on the atmosphere and thus the intensity of noise and pressure are reduced. 244973

244973

The invention addresses the noise and pressure damper of strafing from multi-gun weapons in test areas.

So far, noise and pressure dampers have not been found in multi-gun weapons. Covers and reinforced concrete or wood walls were used in the test areas against these pollutants, which change the direction of the sound wines and the enclosure spaces are partially protected, but they practically do not reduce the noise level. The noise produced by the large caliber weapons so far produced and tested is very high, but with respect to lower kinetic energy and the frequency of the bullet, it is generally lower in tone and still tolerable. However, large-caliber weapons currently being manufactured and tested are significantly more efficient and even noisier. At a distance of 5 m from the muzzle, they cause a noise level of 195 dB and a pressure of 112 kPa. In the distance. 17 m from the muzzle, the noise is still 174 dB. They are values well above the permitted limit and the staff is directly threatened by them. The reinforced concrete covers used do not fulfill the desired purpose, the noise measured in them exceeds 160 dB and in the adjacent corridor up to 177.5 dB and pressure 15 kPa. The missile frequency is also significantly higher, reaching up to 5 kHz.

The above-mentioned drawbacks are eliminated by the sound absorber of the multistage guns according to the invention, which consists in the fact that it consists of an expansion tube and a jacket encapsulated by an absorbent covering, the channels between them being the channels between the expansion tube and the jacket, the expansion tube being provided with flow-through and the base on which the entire muffler is mounted is provided with rubber washers. An example of a silencer and pressure suppressor made of large-caliber weapons is shown in the drawing, wherein in Fig. 1 a silencer is shown in front view and in Fig. 2 a section is taken along line A-A of Fig. 1.

The contents and cross-section of the expansion tube 1 are substantially greater than the barrel content and cross section. Exhaust gases flowing mainly from the high velocity and pressure at the inlet to the expansion tube 1 due to the change in the aperture and the content expand. Their speed, pressure, impact on the atmosphere and thus the intensity of noise and pressure are reduced. Exhaust gases coming out of the barrel will expand into all open spaces. The highest amount of expansion hits the walls of the expansion tube 1 provided in the damping tube 7 and bounces in the direction of the discharge at the angle of incidence. Expansion and impact on walls will limit the initial velocity and slow down some of the gases flowing directly. The flow of the expanding gases penetrates through the flow openings into the space between the expansion tube 1 and the muffler shell 2 and flows into the atmosphere through the channels between the stiffeners 4. The flow velocity will be lower than in the expansion tube 1, thereby avoiding undesirable resonance of the muffler itself. An anti-vibration coating and wrapping of the damper shell 2 by the absorbent lining 3 and the mounting of the silencer 5 on the rubber pads 6 will also serve this purpose. Also the firing mount will be insulated by the rubber pads from the firing stand. The hinged cover 8, 9 prevents the propagation of sound wines in the reverse direction.

Expansion pipes, flow openings, and ducts achieve reduced initial velocity and more uniform gas flow, resulting in a milder transition to airspace, reduced noise and pressure. The biggest benefit of the silencer will be the reduction of considerable risk, the protection of life and health of participants in weapons testing.

Claims (3)

Noise and pressure silencer of large-caliber firing guns, characterized in that it consists of an expansion tube (1) and a damping tube (7), which are provided with flow openings, further comprising a casing (2) encased in an absorbent lining (3), between the casing (2) and the damping tube (7) the stiffeners (4) are separated by channels. INVENTION Shock absorber according to claim 1, characterized in that it is supported on a pedestal (5) provided with rubber pads (6). Shock absorber according to Claims 1 and 2, characterized in that its front part is provided with a hinged cover [8, 9).