民用飞机冲压空气涡轮起动交流马达泵问题研究

Research on the ACMP Starting Problem of RAT for Civil Aircraft

摘要:

冲压空气涡轮RAT 起动交流马达泵ACMP 是民用飞机双发动机失效后重要操作。冲压空气涡轮起动交流马达泵受温度、空速、高度、电机输入频率及液压油温度等因素影响，过程分析十分复杂，鲜有对此的直接研究。对冲压空气涡轮系统及交流马达泵设备特性进行试验、建模及分析，利用试验数据工况对冲压空气涡轮系统模型及交流马达泵模型进行校准，同时对全包线范围内冲压空气涡轮起动交流马达泵的严酷工况进行联合仿真及试验。仿真与试验结果误差在5% 以内，表明了冲压空气涡轮起动交流马达泵模型的有效性，能够用于后续民机设计与验证阶段。

Abstract:

This article studies the AC Motor Pump ACMP Starting Process with Ram Air Turbine RAT. The power generation capacity of RAT is affected by multiple factors such as temperature, airspeed, and altitude, while the ACMP is affected by the input frequency of the motor and the temperature of the hydraulic oil. These multiple factors make the analysis of the starting process very complex, and previous researchers have not conducted direct research on this. This article combines experiments with simulations and uses simulation models to calibrate the test results. During the calibration process, key parameters such as peak current and starting time errors are all within 5%, indicating that the model can demonstrate the starting process of the RAT starting ACMP. This article analyzes the most severe working conditions of the stamping air turbine starting ACMP and simulates the most severe work during the starting process. The simulation accuracy is controlled within 5%. A model for analyzing RAT starting ACMP in harsh scenarios is established, which can be used for subsequent design optimization of aircraft and detailed design of similar models.