The research on prolong life for primer and propelling charge of breech projectile 后装炮弹底火与发射装药延寿方法探讨
2.
By studing , gross firing energy of combustibility primer have an assignable the regularity was seekd 通过研究，找出了可燃底火点火能量具有一定的分配性。
3.
A cap or tube containing a small amount of explosive used to detonate the main explosive charge of a firearm or mine 雷管，底火，导火线装有少量爆炸物的帽或管，用来引爆枪炮或地雷、水雷等
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The surface fire and bottom fire apply separate burning poles , the gas and air is mixed in certain proportion and feeding into the burning pipe by fan 面火，底火各用一根独立的燃烧棒，利用风机把燃气、空气按适当比例混合后送入燃烧管内。
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According to this assignable regulation for the use of firing enegy , the internal ballistic performance of caseless cartridge can be improved by adjusting weight of combustibility primer or addition ignition composition 根据这一点火能量利用分配规则，调整可燃底火或辅助点火药的药量，可以改善内弹道性能。
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The strength of the structures including regulated plugs , primers , and calyx under high pressure had been analyzed by nonlinear finite element method . the result show by the stress clouds , stress value , shape changing etc . the pressure curve drew from data of 57mm high cannon 该论文应用有限元分析软件sap93对国内部分制式底火闭气塞、底火、衬盂进行了有限元数值分析，以应力云图、应力值、位移值的形式给出计算结果。
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The results proved that : ( 1 ) because of the material ' s difference of primer - 9 and primer - 5 , the maximum stress of primer - 5 is larger than primer - 9 but the maximum displacement is smaller than primer - 9 . ( 2 ) because of the unrenewable shape changing of primer - 9 after impacting by the pin , it will cracking under high pressure more easily . so , the paper give the suggestion that the designer should decrease the depth of impacting by pin in the case of the primer be fired successfully 对底- 9底火、底部被击针撞击后的第- 9底火和底- 5底火在膛压作用下分别进行了有限元数值分析，计算表明： ( 1 )底- 5底火底部击针撞击部位为火帽座，其材料为钢带，底- 9底部承受撞击部位为底火体，其材料为冷拉退火圆钢，由于材料强度不同，承受压力能力和变形能力不同：虽然在膛压作用过程中底- 5底火的最大应力值比底- 9底火的大，但底- 5底火的最大位移量却比底- 9底火的小得多。
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Analyzed 8 kinds of regulated plugs . calculating and analyzing results showed : ( 1 ) the most sensitive parts of all the plugs were near the bottom of axes of the notch , which was easily into auxiliary when under high pressure and caused unbalance or break of plugs . ( 2 ) comparison of 8 kinds of plugs proved that the design of plug of primer 9 second was optimization because it was in plastic under increase and decrease in pressure 对国内8种制式闭气塞：底- 9乙式底火闭气塞、海130底火闭气塞、海76炮弹底火闭气塞、底- 5底火闭气塞、底- 4底火闭气塞、底- 8底火闭气塞、底- 25底火闭气塞及底- 125底火闭气塞分别进行了有限元数值分析，计算结果表明： ( 1 )闭气塞凹槽底部靠轴心处为其机械强度最为敏感区域，在承受高压过程中易破裂。
