轻气发射装置内弹道模型及弹道性能分析
根据其发射原理，采用经典内弹道理论描述其发射过程。通过建立气动力数学模型的二级轻气炮基本方程，运用经典Runge-Kutta法求解计算发射过程的内弹道方程，实现了二级轻气炮发射过程的理论计算。本文主要针对30mm/100mm的二级轻气炮进行分析，总结了结构参数的变化规律及二级轻气炮发射性能的加载条件，为进一步优化轻气炮的研究奠定了基础。
关键词 二级轻气炮 Runge-Kutta法 数学模型 发射性能
毕业论文设计说明书外文摘要
Title Light air launcher interior ballistic model and
ballistic performance analysis
Abstract
A two-stage light gas gun is by gunpowder combustion produces high temperature and high pressure combustion gas pushes the piston to move, the piston compressing light gas, use the expansion of gases acting on the projectile, projectile get super high velocity emission device. It is a generic high-speed launch vehicles, because its complexity, we need to explore in the process of loading structure of transmission data and the influence law of launch parameters on the performance, so as to expand the study of the internal ballistic process.
According to the principle of its launch, using classical interior ballistic theory to describe its process of transmission. By establishing the mathematical model of aerodynamic force secondary light gas gun basic equations, using the classic Runge - Kutta method to solve the interior ballistic equations of calculating launch, implements the secondary light gas gun launch process of theoretical calculation. This paper mainly on 30mm/100mm secondary light gas gun analysis, summarizes the change of structure parameters and loading conditions of two-stage light gas gun emission properties of the law, laid the foundation for further research.
Keywords A two-stage light gas gun Runge - Kutta method Mathematical model
Emission performance
目 录
主要符号表 1
1 绪论 3
1.1 课题背景及意义 3
1.2 研究概况 4
1.2.1 国外研究概况 4
1.2.2 国内研究现状 5
1.3 本文的主要工作 6
2 二级轻气炮内弹道过程 8
2.1 二级轻气炮的结构 8
2.2 二级轻气炮的工作原理 9
2.3 二级轻气炮的发射过程 9
3 二级轻气炮的内弹道模型及数值方法 12
3.1 二级轻气炮的内弹道模型 12
3.2 数值方法及条件分析 18
4 二级轻气炮数值模拟 21
4.1 数值模拟结果与性能分析 21
4.2 参数对二级轻气炮的性能影响 26
4.2.1 活塞质量 26
4.2.2 初始注气压力 28
4.2.3 装药量 30
结 论 35
致 谢 36
参考文献37
主要符号表
火药相对已燃体积
火药相对已燃厚度
火药形状特征量