飞机整机级系统安全性指标分析

System Safety Index Analysis in Aircraft Level

针对整机级系统安全性评估中安全性指标的选择与确定问题,分析对比了国内常用安全性参数之间的区别,指出了其在系统安全性评估应用中的缺点;根据系统安全性的特点,提出了飞机整机级系统安全性指标的要求和维度;借鉴国外系统安全性评估的成功经验,结合可靠性,提出了指标选择和量化的具体方法,并举例说明安全性指标的应用时机和使用方法。研究表明,将安全性与可靠性相结合,选择影响飞机安全性的可靠性指标进行机整机级系统安全性评估,可以解决传统安全性参数量化困难、不适用等问题,是一种可行并且合理的方法。

System safety index in aircraft level is analyzed to solve the problem of index selection and quantization in this paper.The flaws of the safety parameter application in system safety analysis are indicated through the analysis and comparison of domestic safety parameters.Based on characteristic of system safety,the requirment and dimensionality of index are proposed.Using the experience on system safety assessment of foreign countries for reference,and considering reliability,methods to select and quantify safety index in aircraft level is started,and one example is given to illustrate when and how to apply safety index.Research shows,combining safety and reliability,selecting indexes having effect on aircraft safety to conduct system safety assessment in aircraft level,can be a practical and reasonable way to solve problems of traditional safety parameters such as the difficulty of quantification and inapplicability.