某型涡扇发动机扰流板进气总压畸变试验研究

在吊舱进口安装扰流板，试验研究某型涡扇发动机进口的总压畸变流场，得到了该型发动机若干状态下进气总压畸变的定量数据，研究了发动机工况、扰流板相对深度对吊舱进气段总压恢复系数、发动机进口各畸变指数的影响，确定了该型发动机进口综合压力畸变指数与进气段平均总压恢复系数的特性，为该型发动机的扰流板式空中逼喘试验和气动稳定性研究奠定了基础。

Test investigation of disturbed board total pressure distortion on a certain turbofan engine

Total pressure distortion flow field test of a certain turbofan engine is conducted based on disturbed board installed in nacelle inlet, and values about inlet total pressure distortion of some operation states of the engine are obtained. Moreover, this paper focuses on study the relationships of inlet section total pressure recovery and engine inlet distortion indexes with the engine operation states and the relative deeps of disturbed board, and the characteristic of the engine inlet multiple pressure distortion with the inlet section total pressure recovery is built up. The studies have established necessary basis for further surge test in the air and aerodynamic stability assessment.