摘要针对埋头弹的结构及内弹道过程的特点，采用两次点火和火药程序燃烧的概念，结合经典内弹道理论，建立埋头弹火炮内弹道模型，给出相应的微分方程组和定解条件。采用四阶龙格-库塔法，用Visual Basic语言进行编程，开发相关的数值计算应用软件，对35mm埋头弹内弹道过程进行了数值计算，获得了膛压、速度等参量随时间和位移的变化特征。最后，利用软件对埋头弹装填参数变化对内弹道性能的影响进行了预测分析。65227

毕业论文关键词  埋头弹 两次点火 内弹道 数值模拟

毕业设计说明书（论文）外文摘要

Title     The Structural Design And Interior  Ballistic      

Characteristics of the Cased Telescoped Ammunition

Abstract

On the base of the characteristics of the structure and trajectory process of the CTA gun, the concept of twice ignition and serial combustion is used. The structure of CTA is analyzed. According to the main features in the interior ballistic of CTA and the classic interior ballistic theory, the interior ballistic models of CTA are established, and the differential equations and solve conditions are also given. The software of numerical calculation is developed by using four-order Runge-Kutta scheme and Visual Basic language. And the numerical calculation of interior ballistic process of 35mm CTA gun is carried out. Characters of bore pressure, speed varied with time and displacement are got. At last, with the software, the influence of the different parameters on the interior ballistic performance is studied.

Keywords    CTA  twice ignition  interior ballistic  numerical simulation

目   次

1  绪论 1

1.1  研究背景与意义 1

1.2  国内外研究状况 2

1.3  本文主要工作 3

2  埋头弹内弹道的结构设计模型 4

2.1  引言 4

2.2  埋头弹内弹道的总体结构设计 4

2.3  埋头弹内弹道循环过程及特点 4

2.4  基本假设 5

2.5  埋头弹内弹道方程组 6

2.6  本章小结 10

3  埋头弹内弹道数值计算 11

3.1  引言 11

3.2  数值计算方法 11

3.3  方程无量纲化 12

3.4  计算软件流程 13

3.5  埋头弹一次点火数值模拟 17

3.6  埋头弹二次点火数值模拟 20

3.7  本章小结 24

4  埋头弹内弹道性能影响 25

4.1  引言 25

4.2  特性参数变化对一次点火过程的影响 25

4.3  埋头弹装填参数变化对内弹道性能的影响 29

4.4  本章小结 35

结论 36

主要符号表 37

致谢