航空子母弹二次抛撒技术研究

【类型】学位论文

【作者】常志远 

【关键词】 径向抛撒,轴向抛撒,固体火箭发动机,航空子母弹,二次抛撒

【摘要】本文对航空子母弹二次抛撒系统进行了系统的分析和研究。根据不同的技术指标，设计了两种不同的抛撒方式，轴向抛撒和径向抛撒。前者利用火药燃气抛撒子弹，适用于毁伤半径较小的子弹药的抛撒，后者利用发动机旋转产生离心力抛撒子弹，适用于搜索范围较大的末敏弹等子弹药的抛撒。对轴向抛撒系统进行设计和研究，主要包括三个部分：火药抛撒的内弹道计算，抛撒后子弹药的外弹道计算，轴向抛撒试验。分析轴向抛撒系统的内弹道特性，根据内弹道模型进行计算，对计算结果进行分析，为内弹道设计提供依据；对抛撒后的子弹药、减速伞及伞弹系统进行气动力分析，建立质点外弹道方程组，计算子弹外弹道，研究抛撒条件对子弹落点散布的影响；实验验证轴向抛撒系统技术方案的可行性与可靠性。对径向抛撒系统进行设计和研究，主要包括两个部分：旋转固体火箭发动机设计，抛撒后子弹药的外弹道计算。确定发动机总体结构方案，完成装药设计、内弹道性能计算及发动机整体结构设计；计算在发动机提供的旋转力矩下，子弹的抛撒初速，对子弹外弹道进行计算，研究抛撒条件对子弹落点散布的影响，为径向抛撒系统的优化设计提供依据。In this paper, the twice throwing system of aerial submunition is systemically analyzed and studied.According to different technical target, axial throwing system and radial throwing system are designed. Axial throwing system uses powder as its throwing power and is applied to bullets of small damage range. Using a small solid motor, radial throwing system makes centrifugal force as its throwing power and is applied to bullets of large search range, such as target sensitivity bullets.First, axial throwing system is studied, including three parts: interior ballistic calculation, exterior ballistic calculation and experiment of axial throwing system.Analyze the interior ballistic of axial throwing system, calculate and study the results according to interior ballistic theoretical model; analyze the aerodynamics of bullet and decelerating umbrella, program and calculate the exterior ballistic of bullet-umbrella system, analyze the factors effecting bullets’ distribution on the ground; test the feasibility and dependability of axial throwing system by experiment.Second, radial throwing system is studied, including two parts: design of revolving solid rocket motor, exterior ballistic calculation.Select the structure of revolving solid rocket motor, calculate the propellant and interior ballistic, complete the structure design ; according to revolving moment offered by rocket motor, calculate the throwing velocity, program and compute the exterior ballistic of bullets, analyze the factors effecting bullets’ distribution on the ground, optimize the radial throwing system.

【学位名称】硕士

【学位授予单位】北京理工大学

【学位授予年度】2016

【导师姓名】姜春兰

【读秀链接】读秀链接