Patent ID: 11287208

Abstract:
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).