The basic signals in the projectile test are dynamic signals such as high initial speed , high chamber pressure , high frequency response , high impact , high temperature measurand . so , the test and measurement system should have more channels , the signals are easy to be obtained , and no matter the measurand it is , the test and measurement plateau should be integrated instantly 弹丸测试的基本信号是高初速、高膛压、高频响、高过载、高冲击、高温等诸多动态量的信号，这要求测试系统通道多、捕捉动态信号容易、搭建针对不同被测信号的测试平台快捷。
This is the theoretical foundation for simulating the gun interior ballistic performance using the closed vessel experiment . based on the functions from closed vessel experiments , the ballistic simulation results of maximum chamber pressure , muzzle velocity and p - t curves of a 105mm gun charged with ltsc nitroamine propellant at + 50c , + 15c and - 40 environmental temperature were in good agreement with experimental data 在密闭爆发器实验的基础上，应用可视化程序对某105mm火炮采用低温感硝胺火药在+ 50 、 + 15和- 40环境温度下的最大膛压、初速以及膛压?时间曲线进行了弹道模拟，模拟与实验结果具有较好的一致性。
Secondly , the cfd method is used to study the flowfields in the laser chamber and the loss of the total pressure in several types of nozzles . the answer shows that reducing the length of the nozzles and the high of the throats in the nozzles can reducing the loss of the total pressure . and the answer also shows that the small nozzles with helium injected in the base region are good for laser chamber pressure recovery 其次,本文利用cfd技术模拟了光腔流场,研究了几种喷管的总压损失特性。研究结果表明,对于平面对称喷管,减小喷管长度,增加喉道高度有利于减少总压的损失。用cfd技术对光腔段的模拟表明,采用小尺寸喷管,并且在基区大量注入氦气有利于激光器压力恢复。
Moreover , the data processing method of accelerated life test is used to solve the problem of the reliability data conversion under different operating status to liquid rocket engine . and the counter power law model is introduced as the relation model between the characteristic life and the combustion chamber pressure , the accelerated life equation of the constant stress accelerated life test for the weibull distribution is obtained , through the accelerated life equation , the reliability estimate of different combustion chamber pressure is calculated 再次,采用加速寿命试验的数据处理方法对液体火箭发动机不同工况下可靠性数据折算的问题进行了研究,引入逆幂律模型作为特征寿命与燃烧室压力之间的关系模型,得到了weibull分布下恒定应力加速试验的加速寿命方程,并通过加速寿命方程折算出不同室压下的可靠度估计。
