基于核估计χ2检验法的子弹药散布均匀性评价方法

子弹药抛撒散布均匀性评价是子母弹研究及工程应用中的一项重要内容。现有评价方法主要基于X2检验法,存在着检验结果对分组区间的划分敏感以及要求样本数量足够大等缺点。前者使评价结果的可信度降低,后者使其应用范围受到限制。本文在核估计的基础上,提出一种改进的X2检验法——核估计X2检验法。利用该方法对某导弹子母战斗部的子弹药抛撒散布均匀性进行评价,并与现有评价方法作对比。结果表明,该方法能克服现有评价方法的不足,且能精细地反映子弹药散布情况。     

聚能金属射流起爆工业炸药爆轰波传播的简化模型

本文建立了射流起爆工业炸药的简化模型。通过理论计算与实验结果的对比,证明该模型是正确的,可用于描述射流起爆炸药的爆轰波传播过程。     

网络化协同打击弹药技术

为大幅提高群体弹药的整体作战效能,进行了将网络化协同打击技术应用于群体弹药的探索研究。在对其基本概念、军事需求、作战模式、研究现状进行分析的基础上,以C4KISR作战体系为架构,构建了网络化协同打击弹药的组成框架,提出了其关键技术,分析了其研究内涵。网络化协同打击技术契合网络中心战的发展趋势,将广泛应用到巡航导弹、制导航弹、巡飞导弹、制导火箭弹、子弹药中。     

十字形降落伞不同高度下抛撒的数值模拟

为了研究十字形降落伞-子弹药系统的气动特性,对降落伞-模拟子弹药系统进行了数值模拟。分别建立降落伞及模拟子弹药的流体力学数值模型,结合动力学方程,给定初始速度,采用变时间步长,设置速度每变化一定值为一个求解点,得到伞衣打开时间以及伞-弹系统从不同高度抛撒后的稳定落速、阻力特征和所经历的时间等。结果表明,十字形降落伞-模拟子弹药系统在不同高度下抛撒达到稳定落速时的阻力特征及所经历的时间基本相同。     

共轴反向双旋翼弹药——GLMAV巡飞弹

GLMAV巡飞弹是一种新概念微型飞行器,对于远程侦察危险或受限环境区域具有重要意义。根据已掌握的相关资料,对GLMAV的核心部件、作战过程以及研发中的难点问题进行了介绍。     

子弹药落地冲击响应的数值模拟及实验验证

采用数值模方法开展了子弹药以不同落角和攻角撞击混凝土介质的冲击响应的研究,对一定质量、速度的子弹撞击混凝土介质进行仿真计算和实验验证。获得了子弹在落速15m/s、落角60~90°和攻角不大于5°范围内撞击混凝土介质冲击峰值过载和碰撞作用时间的影响规律。数值模拟结果与实验结果吻合较好,研究结果对子弹落地冲击响应理论模型的建立及子弹结构部件的结构强度设计具有参考价值。     

Numerical simulation of the parabolic shellsurface under blast wave loading

Deformation of parabolic shell surface under explosion shock waves is a complex dynamicproblem. Because of reflection and interference of blast wave,it’s hard to analytically delineate thedynamic responds of radar parabolic shell surface on blast wave. To gain the characteristics of thinshell deformation under impulsive loading of blast wave,numerical simulation methods for blast loadon the shell structure was studied and analyzed. Euler-Lagrange numerical simulation was implemented by AUTODYN code to simulate the problem. Through analysis on deflection feature of radial position under different explosive mass and detonation height,an equation was founded by fitting thedeflection results from numerical simulation results of shockwave loading. Experiments were arranged to confirm the validity of the formula. The results gained by simulation are consistent withexperiments,and the formula can be used to delineate the deflection of aluminum alloy parabolicshell under blast loading.     

基于Hopfield神经网络的面目标特征识别方法研究

提出了一种基于Hopfield神经网络的面目标特征识别方法。介绍了网络结构、学习算法,编制了相应的计算程序,用该程序对6种不同模拟目标的样本数据进行识别,均被正确识别。结果初步表明,利用Hopfield神经网络进行面目标特征识别是基本可行的。     

运用OLE和DDE技术在FoxPro下管理Word文档

本文介绍了在 FoxPro 2.5(for Windows)下对 Word文档进行管理的方法,并给出了程序实例。     

Numerical simulation of the parabolic shell surface under blast wave loading

Deformation of parabolic shell surface under explosion shock waves is a complex dynamic problem. Because of reflection and interference of blast wave, it’s hard to analytically delineate the dynamic responds of radar parabolic shell surface on blast wave. To gain the characteristics of thin shell deformation under impulsive loading of blast wave, numerical simulation methods for blast load on the shell structure was studied and analyzed. Euler-Lagrange numerical simulation was implemented by AUTODYN code to simulate the problem. Through analysis on deflection feature of radial position under different explosive mass and detonation height, an equation was founded by fitting the deflection results from numerical simulation results of shockwave loading. Experiments were arranged to confirm the validity of the formula. The results gained by simulation are consistent with experiments, and the formula can be used to delineate the deflection of aluminum alloy parabolic shell under blast loading.