| 摘要 |
PURPOSE:To cause a position of a cannon barrel to be hardly discovered by a method wherein when a bullet is launched, a discharging of launching gas is delayed. CONSTITUTION:When a launching bullet 3a completes its combustion, a main body 1a of a cannon near a rear end of a bullet 2 is formed with a launching gas discharging part 1b. The launching gas discharging part 1b is covered by an outer cylinder having a front end fixed to an outer surface of the main body 1a of the cannon so as to define a launching gas glowing passage 4a communicating from a launching gas discharging part 1b reawardly and having its rear end opened. Due to this fact, combustion of not-yet ignited launching gas outside the bullet is restricted when the bullet 2 is launched. Along with this operation, explosion wind is reduced and its safety characteristic is improved, resulting in that a degree of freedom of arranging of army groups can be increased and a position of the cannon can be hardly discovered by enemy. |
