Research On Civil Airplane Safety Work System And Methods Of Common Mode Analysis

This paper have a research on civil airplane work system and methods of civil airplane safety analysis-methods of common mode analysis。First , research on the FAA's civil airplane safety working condition, the FAA safety organization, duties, the opportunity for the safety analysis. It also analyses domestic civil airplane safety working condition and sums up the results of domestic civil airplane safety in recent years.Second, to study in depth the safety work and safety requirements in various stages of civil airplane development. Conducted a comprehensive research on civil airplane safety work, contents and requirements, from the safety design of civil airplane, analysis, evaluation ,verification and safety project's document and method system, determine the safety contents and requirements of civil airplane, establishing civil airplane safety analysis, test and evaluation system , provided technical support for the safety of China's civil airplane.Third, civil airplane safety analysis method -- common mode failure analysis for qualitative and quantitative analysis, on the basis of the traditional quantitative analysis of the model, the traditional model of information omitted, bring forward a more practical model of common-mode failures, And adopted parallel, Series System certification of the new model of common-mode failures during the quantitative analysis, closer to the actual situation.Fourth, for the example of civil airplane landing gear systems, determining landing gear failure conditions by function hazard analysis, set the failure conditions as the top event, establish a landing gear system fault tree. On the basis of fault tree, conducting quantitative analysis of the common-mode failures on "and the" incident of fault tree.