A few days ago, a video on the Internet to destroy bullets caught the attention of netizens. What would the picture look like when the 2 box bombs were detonated together? In the video, the US Air Force pushed a large amount of bullet explosives into two large wooden boxes, poured gasoline, covered the boards, and then detonated. Suddenly, a huge white mushroom cloud rose into the sky, and the buzzing sound of bullets was clearly heard in the middle, and the objects were blown into the air, and the sparks overflowed. It is understood that depending on the caliber and the amount of charge, the initial velocity of the bullet varies from 300 m / s to km / sec, which is directly related to the amount of propellant. There are two types of bullet internal charge: 1, the end of the fire Usually in the special bottom fire chamber behind the bullet's buttocks, the weight is very small, but the temper is very big, as long as it is impacted, it will erupt. For the sake of safety, most of them are protected by a thin metal cover. The shot of the gun must be violent. The bottom fire cover is deformed, and the bottom gunpowder and the bottom fire table are struck to detonate the bottom fire, and then the entire bullet is triggered through the bottom fire hole. 2. Propellant Propellant is the main source of energy for the kinetic energy of the warhead, mostly granular. Generally required to be stable in nature, it is not easy to get angry due to heat and impact. It will only detonate under the trigger of the bottom fire. Permanent Magnet Stepper Motor
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