液体火箭发动机无失效条件下的可靠性分析方法

针对液体火箭发动机热试车过程中可能出现的无失效情况,在对寿命分布进行分析的基础上,利用配分布曲线-最小二乘法,采用经典估计和Bayes估计作为先验分布,对液体火箭发动机无失效条件下的可靠性进行了评估,并对评估结果进行了分析。计算结果表明,采用最小二乘法结合Bayes估计,可以较好评估液体火箭发动机在无失效条件下的可靠性。

Study on Reliability Analysis Method for Liquid Rocket Engine in the Case of Zero-failure Data

In the progress of the trial run of liquid rocket engine,the situation of zero-failure data may happen.For zero-failure data,the reliability of the liquid rocket engine was assessed by the least square method with the classical estimation and the Bayes estimation based on the analysis of the life distributing.An analysis of the estimate result was also given.The computational results indicate that the least square method combined with the Bayes estimation is suitable for the reliability analysis of liquid rocket engine in the case of zero-failure data.