民用飞机冲压空气涡轮起动交流马达泵问题研究OA

Ram air turbine starting AC motor pump procedure is an important operation after the failure of dual en-gines in civil aircraft.This procedure is affected by many factors such as temperature,airspeed,altitude,motor in-put frequency,and hydraulic oil temperature,and the process analysis is very complex,which has not been directly studied by previous researchers.The experiments,modeling,and analysis are conducted on the characteristics of the ram air turbine system and AC motor pump equipment.The ram air turbine system model and AC motor pump model are calibrated using experimental data and operating conditions.At the same time,joint simulation and tes-ting are conducted on the harsh operating conditions of the ram air turbine starting AC motor pump within the full envelope.The error of simulation and experimental results is less than 5%,which indicates that the ram air turbine starting AC motor pump model is effective,and the model can be used for subsequent civil aircraft design and verifi-cation stages.