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为研究内孔位置对七孔变燃速发射药燃气生成规律的影响,推导了不同弧厚七孔变燃速发射药的形状函数和燃气生成猛度,利用maple软件对不同内孔位置的七孔变燃速发射药进行了数值计算。计算结果表明,内孔位置影响七孔变燃速发射药的燃烧性能。缓燃层燃烧结束后,外弧等于内弧时,发射药的燃烧渐增性最好;周围六孔的位置靠内或者靠外,导致外弧和内弧不相等,当两者相差较大时,都会使减面燃烧时间提前,影响发射药的渐增性。
In order to study the influence of inner hole position on gas genesis of seven holes with variable firing rate propellant, the shape function and gas generation flipping of seven holes with different burning rates were deduced. Using maple software, Porous firing propellant has been numerically calculated. The calculation results show that the position of the inner hole affects the combustion performance of the seven-hole variable-rate propellant. When the outer combustion arc is equal to the inner arc after the combustion of the buffering layer is completed, the propellant of the projectile has the highest combustion increasing effect. The positions of the six holes around the inner and outer arcs lead to the unequal outer arc and inner arc. When the difference between the two is large Will make the burning time reduce the front, affecting the increasing nature of propellant.