航空发动机旋转件遥测天线研究与实现

Research and Practice of Telemetry Antenna for Aeroengine Rotating Parts

以航空发动机高速旋转件非接触信号传输技术为研究对象,依托Datatel射频遥测系统,制定出一种航空发动机旋转件参数总体测试方案,提出一种1.34 GHz~1.7 GHz的发射/接收天线设计方法。基于ANSYS HFSS建立封装后的发射天线模型和接收天线模型,分析S参数随封装介质厚度、损耗角正切及介电常数的变化规律,形成了一套遥测转/静子工程应用装置。实验室测试结果表明:S参数实测与仿真结果较为吻合;高速旋转台测试结果表明:该装置在转速≯20 000 r/min,轴向间距≯10 mm状态下,具备高可靠信号传输的能力;某型航空发动机压气机试车结果表明:该装置能可靠应用于航空发动机压气机转速≯20 000 r/min,装配轴向间距为2.37 mm的复杂工况条件。

Taking the high-speed rotating non-contact signal transmission technology of aeroengine as research object,relying on Datatel RF telemetry system,an overall test scheme for aeroengine rotating parts parameters is formulated,and a design method of 1.34 GHz~1.7 GHz transmitting/receiving antenna is proposed.The transmitting/receiving antenna model after packaging are established based on ANSYS HFSS.The variation law of S parameters with packaging medium thickness,loss tangent and dielectric constant is analyzed.A set of telemetry rotor/stator engineering application device is formed.Laboratory test results show that the measured S parameters are in good agreement with the simulation results.The results of high-speed rotating test indicate that the device has high reliable signal transmission ability under the condition of rotating speed≯20000 r/min and spacing≯10 mm.Compressor test results indicate that the device can apply to the complex working conditions of compressor speed≯20000 r/min and assembly spacing of 2.37 mm.