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从适航规章对全权限数字发动机控制(full authority digital engine control,简称FADEC)系统的安全要求出发,结合功能危险分析(functional hazard assessment,简称FHA)的一般原则和FADEC系统的特点,得到了FADEC系统FHA的分析要素.根据分析要素中的工具与数据需求,将航空发动机气动热力模型用于可调放气活门(variable bleed valve,简称VBV)控制功能失效危险分析,结果表明:①该模型能够辅助确定FADEC系统功能失效的发动机影响;②FADEC系统功能危险的模型分析方法通过定量分析确定发动机影响的危险等级,为FHA提供直观的参考依据,可作为对专家经验的补充.
Based on the requirements of airworthiness regulation on the safety of full authority digital engine control (FADEC) system and the general principle of functional hazard assessment (FHA) and the characteristics of FADEC system, FADEC According to the requirements of tools and data in the analysis elements, the aerodynamic model of aeroengine is used to analyze the failure function of the controllable variable bleed valve (VBV). The results show that: (1) The model can Assist to determine the engine failure caused by the FADEC system failure; ② The FADEC system function risk model analysis method through the quantitative analysis to determine the risk level of the impact of the engine, provide an intuitive reference for the FHA, can be used as a supplement to the expert experience.