| 摘要 |
A cartridge munition, particularly practice round, includes a cartridge shell ( 3 ) and a projectile ( 2 ) inserted into it. A propulsion chamber ( 4 ) is provided within the cartridge shell that receives a propulsive charge ( 5 ) that may be ignited by means of a pyrotechnic igniter ( 13 ) and that develops propulsive gases that act on the base ( 8 ) of the projectile, driving it out of the cartridge shell. In order to prevent the pyrotechnic igniter from igniting spontaneously, and from igniting the propulsive charge ( 5 ) because of the ambient temperature or because of a fire, which would cause the cartridge shell and projectile to be separated and fly apart, it is proposed by the invention to provide exhaust channels ( 14 ) between the propulsion chamber and the exterior of the cartridge shell ( 3 ) that are filled with a fusible material, particularly a fusible metal ( 15 ). The fusible material has a lower melting point than the ignition point of the igniter ( 13 ) and of the propulsive charge ( 5 ). If the ambient temperature of the cartridge shell rises above the melting point of the fusible material, it melts, releasing the exhaust channels ( 14 ), so that, upon delayed ignition of the propulsive charge, it burns without pressure buildup, and the cartridge shell and projectile remain together.
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