推进技术 ›› 1997, Vol. 18 ›› Issue (3): 10-14.

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液体火箭发动机失效的Weibull分布环境因子

安伟光,周源泉   

  1. 北京强度与环境研究所!北京;100076;北京强度与环境研究所!北京;100076
  • 发布日期:2021-08-15

ENVIRONMENTAL FACTOR OF WEIBULL DISTRIBUTION FOR LIQUID ROCKET ENGINE FAILURE

  1. Beijing Iust. of Structure and Environment, Beijing, 100076;Beijing Iust. of Structure and Environment, Beijing, 100076
  • Published:2021-08-15

摘要: 针对液体火箭发动机,给出了检验天地环境下失效机理是否相同的统计方法,基于这个前提,推导了天地环境因子的极大似然估计,并用数值例说明了这些方法。

关键词: 液体推进剂火箭发动机;失效机理;寿命预测;Weibull分布

Abstract: A statistical method of constant failure mechanism for liquid rocket engines in groundand flight test environments is presented. A maximum likelihood estimate of flight environmentalfactor is derived. And these methods are illustrated with a numerical example.

Key words: Liquid propellant rocket engine;Failure mechanism;Life prediction;Weibulldistribution