无失效数据下液体火箭发动机的E-Bayes可靠性分析

Abstract

Abstract: A reliability analysis of a liquid rocket engine for the case of zero-failure data is given in this paper to provide reference for the reliability evaluation of expensive and high-quality products such as those used in aviation and space travel. By means of Expected-Bayesian (E-Bayes) estimation, a prior distribution of failure probability is determined for the case where there is zero-failure data available in the trial run of the liquid rocket engine, and the E-Bayes estimation and hierarchical Bayesian (Bayes) estimation of failure probabilities are presented based on the related literature. After that the least square method and weighted least square method are used to obtain the parameters of life distribution and its reliability as well as the point and interval estimates. Finally, the calculated results of a practical problem show that the proposed method is feasible and convenient in engineering application.

Key words: liquid rocket engine, E-Bayes estimation, hierarchical Bayes estimation, reliability, zero-failure data, least square method, interval estimation

CLC Number:

HAN Ming. E-Bayes Reliability Analysis for Liquid Rocket Engine with Zero-failure Data[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2011, 32(12): 2213.

References

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E-Bayes Reliability Analysis for Liquid Rocket Engine with Zero-failure Data

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