Safety evaluation of the power system of electric vertical take-off and landing vehicles with different configurations
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.
electric vertical take-off and landingpowertrain configurationsafety evaluationelectric aircraftfunctional hazard analysesfault tree analysisfailure riskaircraft configuration
万方数据
维普
