双药室小孔延时点火内弹道建模与试验研究

为了使某种能够提供毫秒级以下时间间隔的小孔延时装置能够准确地调节某型双药室发射机构的内弹道性能,对这种双药室小孔延时点火技术进行了研究.描述了小孔延时点火装置的结构设计方案,根据双药室小孔延时点火装置的工作原理,建立了相应的内弹道模型并进行了计算.开展了某型双药室发射机构的内弹道试验,测量了两个药室的压力变化情况,讨论...

Interior Ballistic Modeling and Experimental Study on Keyhole Delayed Ignition in Double-chamber

In order to make the keyhole delayed ignition device,which could provide a time interval that is shorter than a millisecond,adjust the interior ballistic performance of double-chamber fire mechanism more accurately,a keyhole delayed ignition technology for double-chamber was researched.A structure design scheme of keyhole delayed ignition device was described.An interior ballistics model was established according to the working principle of keyhole delayed ignition device in double-chamber.Besides that,the interior ballistic experiment of double-chamber fire mechanism was done,and the changing situations of pressure in two chambers were measured in the experiment.Then the working process of the keyhole delayed ignition device and the change laws of pressure in each chamber were discussed.By comparing the calculated pressure-time curve with the measured curve,it is shown that the calculated result agrees closely with the experimental result.The interior ballistics model and the test technology can be used to guide the design of keyhole delayed ignition device in double-chamber.