摘要
液体火箭发动机性能可靠性评估主要讨论其关键性能参数是否满足设计任务书规定的额定值及偏差范围是否符合要求。由于发动机参加飞行次数非常有限,传统评估方法得到的结果置信度不高。本文提出一种在Bayes评估框架下,利用随机加权仿真技术进行性能可靠性评估的新方法。文章的最后给出一个具体算例说明了该评估方法的应用。
The performance reliability assessment of liquid rocket engine mainly discusses whether the vital performance parameters and its warp satisfied the demands of the design documents. For the real flying data is very limited, this is a small sample problem. The confidence level of results achieved from traditional statistical method is not high. In this composition, a Bayes approach based on random weighting simulation method is proposed to solve this problem. In the end, an example is given to show how to use this method in engineering.
出处
《系统仿真学报》
CAS
CSCD
2003年第11期1603-1606,共4页
Journal of System Simulation
基金
总装备部年度课题资助项目(KZ01008)
关键词
性能可靠性
随机加权法
验前信息
修正因子
置信下限
performance reliability
random weighting simulation
prior information
modification factor
low value of confidence interval
