针对民航发动机运行可靠性分析工作中对大样本情况研究不足的问题,以某航空公司发动机部件寿命数据为样本,采用生存分析中的非参数和参数两种方法分别构建生存模型进行可靠性分析及比较研究。结果表明,非参数方法能够直观的描述可靠性变化,并且能够很好地处理删失数据。在大样本和完全未知分布模型的情况下,非参数方法较参数方法更为准确。 Aiming at the problem of insufficient research on the large sample in the reliability analysis of civil aviation engine operation, taking the life data of engine parts of a certain airline as a sample, this paper uses the nonparametric and parametric survival analysis to construct the survival model separately for reliability analysis and compare research. The results show that the non-parametric method can directly describe the reliability changes and can handle the censored data well. In the case of large samples and completely unknown distribution models, the nonparametric method is more accurate than the parametric method.