某型航空发动机进气压力畸变试验研究

。。、、。ExperimentalStudyonInletPressureDistortionofanAeroengineKONGDi（AVICShenyangEngineDesignandResearchInstitute,Shengyang110015,China）Abstract:Aimingattheaircraftinletandengineinletflowdistortioncausedbytheflightathighattackangle,thegeneralanti-inletpressuredistortioncapabilityofanenginewasexperimentallystudied,whichusedinletflashboarddistortionsimulation.Thecriticaldistortionindexeswereobtainedatthefanconversionspeed.Theenginetransitionoperationwasusualattheacceleratedtestunderthedistortioncondition.Theresultsshowthatthetestplotisfeasible,thedataisreliableandtheresultsiseffective,whichsatisfytheaircraft/enginecompatibilitytestrequirement.Keywords:inletpressuredistortion;totalpressuredistortion;distortionindex;aeroengine;fan;compressor、。。。、。。。。、、、。、、。D、D。D°。。、。D、。DD。D×、D、。n～H。。WHWWH。。。H、WH。。Hnσ、△σ、εW。HnΔHWH。WHW。H。WHW。。HnΔHΔH。。HnDDDDH。WW△σε△σ軍ε。△σ軍△σ軍△σ軍σσ×σσ。σ軍σ軍σ軍rr軃乙σr軃Φr軃r軃σr軃Φr軃ΦPrr軃Pr軃ΦP。σσσππ乙σ軍ΦΦ。σ軍σ軍σ。ΦΦΦΦΦ、Φ。σ。σ。σΦ0ΦΦ乙σ軍ΦΦ0△σ軍Φ0≥°△σ軍Φ0°△σ軍×Φ060°。εεP。εiεiεi△PP△PTT乙PτP軈τ姨P軈TT乙PττT。εεε6Σiεi。fVD。VD。。、nH。、、H。nHH。Hn、HH。n。n。H～H、、。n。。n。。°。H、nn。。nH≥～。n～。、。nHnHnHn、Hn、HrD、n、H。。。n、σ、ε、Δσ、WW。σε、ΔσW。nΔH～。。。。。。。n、Hn、Hn、Hn、HnnH’