航空发动机叶尖间隙数学模型的建立与验证  

Establishment and Verification of Aeroengine Tip Clearance Mathematical Model

作　　者：陈研[1] 吕天波[1] 张生[1] 张镭[2] 

机构地区：[1]中航工业沈阳发动机设计研究所,沈阳110015 [2]东北大学机械工程与自动化学院,沈阳110819

出　　处：《航空发动机》2015年第6期17-21,共5页Aeroengine

基　　金：国家重大基础研究项目资助

摘　　要：在航空发动机装配中,保证设计要求的叶尖与机匣间隙,可以减少工作介质泄漏,降低端壁损失,从而保证发动机性能。基于单传感器单步法测得的间隙数据在国内开创性地建立了叶尖间隙数据处理的数学模型,推导出判断转子与机匣装配是否合格的叶尖间隙相关特征参数FIR,IMP以及转静子同心度ECC的求解公式,建立了发动机水平放置时消除下沉量影响的数学模型。并在Lab VIEW平台上开发了相应的数据处理软件验证了所建立的数学模型的正确性。The good tip clearance in aircraft engine assembly can reduce the leakage of the working medium and the loss of the end wall to guarantee engine performance. Based on the tip clearance data tested by single-sensor single-step method, the tip clearance mathematical model has been established firstly. The model can solve the relative parameters that judge the qualification of rotor and casing assembly, for example, FIR IMP Ecc and so on. And the model for eliminating effects of the subsidence was also established when the engine was placed horizontally. The engine tip clearance data analysis software was developed on the LabVIEW platform and the accuracy of model was verified.

关 键 词：叶尖间隙 数学模型 LABVIEW 航空发动机 

分 类 号：V239[航空宇航科学与技术—航空宇航推进理论与工程]