| 摘要 |
<p>The cartridge has a rear chamber (1) including an ignition unit. A confining unit confines a propelling powder i.e. progressive combustion powder, in the rear chamber, while allowing passage of gases resulting from combustion of the powder via vents of the rear chamber. A low pressure chamber (3) forms a projectile propulsion chamber, and is communicated with an intermediate chamber (2) having constant volume by an opening (13) of a predetermined section. A wedging disk is made of polystyrene, felt or carton, and placed around an igniting tube.</p> |
