某型涡扇发动机的可靠性增长分析与评估  

Reliability growth analysis and assessment for a type of turbofan engine

作　　者：周源泉[1] 刘振德[2] 陈宝延[2] 李小彪[2] 雷鸣[2] 马同玲[2] 

机构地区：[1]中国航天科技集团公司一院七○二所 [2]中国航天科工集团公司三院31所

出　　处：《质量与可靠性》2004年第3期42-45,共4页Quality and Reliability

摘　　要：本文给出了涡扇发动机可靠性增长分析与评估的流程与方法。分析结果表明,其初样、试样均有显著的可靠性正增长,其故障均可用幂律模型跟踪,试样的MTBF比初样有显著增长,试样MTBF的点估计为θ粎=8.744h,置信水平γ=0.90时,其下限θL=5.570h。In this paper, the flow and methods of reliability growth and assessment for a type of turbofan engine are presented. The analysis results indicate both the initial prototype and test prototype have significant reliability positive growth, their failure data can be tracked by the power law reliability growth model, the MTBF of test protetype VS. the MTBF of initial prototype have significant growth, the point estimate of MTBF, θ, of test prototype, is 8.744, Lower limit,θ,of θ with confidence level γ=0.9 is 5.570?

关 键 词：可靠性增长分析 涡轮风扇发动机 幂律模型 可靠性评估 置信水平 

分 类 号：V430[航空宇航科学与技术—航空宇航推进理论与工程]