The device aligned with the axis of the barrel of a firearm is configured to equalize, as well as possible, the momentum generated by the projectile and the burnt gases, by projecting a mass of fluid at a given speed in the opposite direction. The device includes a support to be attached to the weapon, a primary valve mechanism, a secondary valve mechanism and a duct for the gases to flow along. The secondary valve mechanism to seal and fill the tank with a pressurized fluid provided by an external system. The primary valve mechanism to seal and expel the fluid in a discharge zone. The device is particularly intended for military applications in order to improve the grouping of shots and to reduce the costs and limitations of using the barrels.

A lightweight energetic weapons pod 2 that integrates to unmanned aerial systems 1 that enables the operator the ability to engage targets without flight degradation. The device utilizes an energetic weapons pod 2 that may be reloaded to support sustained combat operations. The ability of the device to function as intended is based on explosive mitigation compression zones and recoilless configurations that allow drone survivability during detonation events.

The invention relates to a recoilless apparatus for firing conventional cartridge-based ammunitions comprising a gun barrel and a compensating mass launch tube wherein a projectile is accelerated in one direction inside said gun barrel counterbalanced by a compensating mass accelerated in the opposite direction inside said launch tube thereby minimizing recoil and further providing means of automatic ammunition handling.

The invention relates to a gun provided with recoil brake (14) and a method for improving the efficiency of the same. During the method a portion of the gunpowder gases burnt by means of the oxidant present in the barrel (2) of the gun but still containing inflammable material is introduced as the primary medium from the barrel (2) of the gun into the nozzle (9) of an ejector and the secondary medium is thus pumped in for forming a pre-mixture which is introduced into the combustion chamber of a pulsating reactive drive mechanism (10) acting in a direction opposite to the direction of the shot. This mixture is further burnt by means of the medium containing oxidant present in the drive mechanism (10), the combustion product is led out through the blow pipe (18) and the flow-back taking place during combustion is avoided by means of a valve. The barrel has gas port openings (3) from which the gunpowder gases as primary medium are introduced into the mixed medium transport duct (5) connected to the secondary medium transport duct (4) of the variable operation ejector (8), and in this manner the external oxidant containing medium is pumped in. This mixture from the direction of the nozzle (9) is introduced into the combustion chamber (13) of a pulsating reactive drive mechanism (10), and the flow back is prevented by the ram pressure of the mixture flowing into the combustion chamber (13) through the nozzle (9). The medium present in the combustion chamber (13) is compressed and after the pressure exceeds the pressure in the barrel (2) due to the processes taken place in the combustion chamber (13) and the flow turns back, the combustion product gases as a new primary medium flowing through the nozzle (9) together with the medium transported from the barrel (2) through the mixed medium transport duct (5) and with the medium again transported from the external environment through the secondary medium transport duct (4) is pressed into the afterburner chamber (17) provided on the other side of the variable operation ejector (8) where this mixture is further burnt in the presence of a catalyst reducing the activation energy of the combustible material, then the combustion product is exhausted through the blow pipe (18).

A recoilless, slideless repeating magazine-fed (19) weapon, comprising a hammer (9), a hammer pull rod (7), a trigger spring (8) and a safety (28). The open breech (15) connects directly to the open, expanding cross-section funnel (18), and furthermore the funnel (18) has an extractor (24) on the side which connects to the forend (21) through a funnel pull rod (20), and furthermore the magazine (19) is connected to the magazine well (19/1) at the bottom of the open breech (15) with a magazine holding pin (19/6). The weapon is compatible with a variety of magazines (19), including box magazines (with one or more rows of cartridges), drum magazines, or helical magazines.

A recoilless, slideless repeating magazine-fed (19) weapon, comprising a hammer (9), a hammer pull rod (7), a trigger spring (8) and a safety (28). The open breech (15) connects directly to the open, expanding cross-section funnel (18), and furthermore the funnel (18) has an extractor (24) on the side which connects to the forend (21) through a funnel pull rod (20), and furthermore the magazine (19) is connected to the magazine well (19/1) at the bottom of the open breech (15) with a magazine holding pin (19/6). The weapon is compatible with a variety of magazines (19), including box magazines (with one or more rows of cartridges), drum magazines, or helical magazines.

A breech for noise reduction in a recoil-less weapon is described. The breech is adapted to be arranged in fluid communication with a launcher of the weapon to release exhaust gas. The breech comprises a venturi tube. The venturi tube has an inlet at a first end adapted to be connected to the launcher, and an outlet for releasing the exhaust gas at a second end, wherein the area of the outlet is larger than the area of the inlet. The venturi tube further comprises an exhaust gas controlling element formed at the venturi tube structure. The exhaust gas controlling element is arranged to control the release of exhaust gas so as to decrease a sound pressure peak at the weapon. The inner envelope surface of the venturi tube is configured, such that the inner envelope surface does not alter or at least has a very small influence on recoil characteristics of the weapon.

A breech for noise reduction in a recoil-less weapon is described. The breech is adapted to be arranged in fluid communication with a launcher of the weapon to release exhaust gas. The breech comprises a venturi tube. The venturi tube has an inlet at a first end adapted to be connected to the launcher, and an outlet for releasing the exhaust gas at a second end, wherein the area of the outlet is larger than the area of the inlet. The venturi tube further comprises an exhaust gas controlling element formed at the venturi tube structure. The exhaust gas controlling element is arranged to control the release of exhaust gas so as to decrease a sound pressure peak at the weapon. The inner envelope surface of the venturi tube is configured, such that the inner envelope surface does not alter or at least has a very small influence on recoil characteristics of the weapon.

A lightweight energetic weapons pod 2 that integrates to unmanned aerial systems 1 that enables the operator the ability to engage targets without flight degradation. The device utilizes an energetic weapons pod 2 that may be reloaded to support sustained combat operations. The ability of the device to function as intended is based on explosive mitigation compression zones and recoilless configurations that allow drone survivability during detonation events.

The invention relates to a gun provided with recoil brake (14) and a method for improving the efficiency of the same. During the method a portion of the gunpowder gases burnt by means of the oxidant present in the barrel (2) of the gun but still containing inflammable material is introduced as the primary medium from the barrel (2) of the gun into the nozzle (9) of an ejector and the secondary medium is thus pumped in for forming a pre-mixture which is introduced into the combustion chamber of a pulsating reactive drive mechanism (10) acting in a direction opposite to the direction of the shot. This mixture is further burnt by means of the medium containing oxidant present in the drive mechanism (10), the combustion product is led out through the blow pipe (18) and the flow-back taking place during combustion is avoided by means of a valve. The barrel has gas port openings (3) from which the gunpowder gases as primary medium are introduced into the mixed medium transport duct (5) connected to the secondary medium transport duct (4) of the variable operation ejector (8), and in this manner the external oxidant containing medium is pumped in. This mixture from the direction of the nozzle (9) is introduced into the combustion chamber (13) of a pulsating reactive drive mechanism (10), and the flow back is prevented by the ram pressure of the mixture flowing into the combustion chamber (13) through the nozzle (9). The medium present in the combustion chamber (13) is compressed and after the pressure exceeds the pressure in the barrel (2) due to the processes taken place in the combustion chamber (13) and the flow turns back, the combustion product gases as a new primary medium flowing through the nozzle (9) together with the medium transported from the barrel (2) through the mixed medium transport duct (5) and with the medium again transported from the external environment through the secondary medium transport duct (4) is pressed into the afterburner chamber (17) provided on the other side of the variable operation ejector (8) where this mixture is further burnt in the presence of a catalyst reducing the activation energy of the combustible material, then the combustion product is exhausted through the blow pipe (18).