Single failure MTBF analysis on aircraft safety assessment

Abstract

Abstract:

Safety is the lifeline of civil aviation industry. The regulations proposed by airworthiness authorities require that the occurrence of any single failure which would prevent continuous safe flight and landing of airplanes is extremely improbable. While the ambiguous description makes it difficult to calculate the occurrence of single failure in practice. The traditional parameter, mean time between failure(MTBF), is not suitable for single failure analysis due to the possibility that critical safety components may fail before MTBF. A method is proposed to evaluate the probability of single failure. The evaluating formula for the occurrence probability of single failure basing on sample size is given. Practical cases are used to verify the effectiveness of this method.

Key words: single failure, MTBF, probability, safety assessment

CLC Number:

V240.2

YANG Ke, ZHAO Changxiao. Single failure MTBF analysis on aircraft safety assessment[J]. .

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