Safety evaluation is critical in the architecture development,safety management,design verification,and commercialization of electric vertical take-off and landing(eVTOL)aircrafts.However,relevant research on eVTOL configuration and system design in China is limited.In this study,four different configurations of eVTOL aircraft,including lift and cruise fixed-wing aircraft,multi-rotor aircraft with four axes and eight rotors,fixed-wing and tilt-rotor aircraft,and tilt-wing aircraft,were analyzed and compared using functional hazard analysis(FHA)and fault tree analysis(FTA)methods.The analysis results show that the power configuration of lift and cruise fixed-wing eVTOL aircraft has better reliability than the three other configurations in the specific application scenar-ios considered in this study.The combination of the FHA and FTA methods adds comprehensiveness and depth to the understanding of functional hazards and identifies multiple potential pathways to mitigate the risk of power sys-tem failure.The safety evaluation results can be used as a reference for eVTOL dynamic configuration selection and product development.
关键词
电动垂直起降/动力架构/安全性评估/电动飞行器/功能危害分析/故障树分析/失效风险/整机构型
Key words
electric vertical take-off and landing/powertrain configuration/safety evaluation/electric aircraft/functional hazard analyses/fault tree analysis/failure risk/aircraft configuration
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