Patent ID: 8544387
Filing Date: 2013-10-01
Classification: F42B

Abstract:
1. Propellant charge for barrel weapons having a circular outer cross section and a charge density and progressivity, characterized in that the propellant charge comprises two or more radially highly perforated propellant tubes arranged concentrically inside one another with circular outer and inner cross sections, where each outer propellant tube has an inner cavity with a cross-sectional form adapted to the outer diameter of an inner propellant tube that may be arranged therein, and where each propellant tube in its entirety is perforated with combustion or ignition channels arranged radially in the cross section of the propellant tubes, said ignition channels are separated from one another at distances or e-dimensions adapted for the respective propellant tube in relation to the desired combustion times and the type of propellant contained therein, wherein at least one of the total number of outer surfaces of said propellant tubes that are available for initiation has been treated with an inhibition surface treatment or surface coating that delays the propagation of ignition to this surface, so that combustion of the propellant tubes is partially overlapping, and wherein different propellant tubes are produced from different propellants with different rates of combustion and perforated at different e-dimension distances.