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1、NASAReferencePublication1218July1989AirfoilSelf-NoiseandPredictionThomasF.Brooks,D.StuartPope,andMichaelA.MarcoliniUnclasI-/1/7101￡7717INASAReferencePublication12181989AirfoilSelf-NoiseandPredictionThomasF.BrooksLangleyResearchCenterHampton,VirginiaD.StuartPopePR
2、CKentron,Inc.AerospaceTechnologiesDivisionHampton,VirginiaMichaelA.MarcoliniLangleyResearchCenterHampton,VirginiaNationalAeronauticsandSpaceAdministrationOfficeofManagementScientificandTechnicalInformationDivisionContentsSuminary..................................
3、11.Introduction................................21.1.NoiseSourcesandBackground......................21.1.1.Turbulent-Boundary-LayerTrailing-Edge(TBL-TE)Noise........21.1.2.Separation-StallNoise........................31.1.3.Laminar-Boundary-Layer-Vortex-Shedding(L
4、BLVS)Noise.......31.1.4.TipVortexFormationNoise.....................41.1.5.Trailing-Edge-BluntnessVortex-SheddingNoise.............41.2.OverviewofReport...........................42.DescriptionofExperiments.........................52.1.ModelsandFacility..........
5、.................52.2.Instrumentation............................52.3.TestConditions.............................52.4.WindTunnelCorrections........................53.Boundary-LayerParametersattheTrailingEdge................93.1.ScaledData.........................
6、.....93.2.CalculationProcedures.........................9.AcousticMeasurements..........................154.1.SourceIdentification.........................154.2.CorrelationEditingandSpectralDetermination.............154.3.Self-NoiseSpectra........................
7、...17.SpectralScaling.............................515.1.Turbulent-Boundary-Layer-Trailing-EdgeNoiseandSeparatedFlowNoise.515.1.1.ScaledData...........................51Zeroangleofattack.........................51Nonzeroangleofattack........................545.1.2
8、.CalculationProcedures.......................595.1.3.ComparisonWithData......................625.2.Laminar-Boundary-Layer-Vortex-SheddingNoise.............625.
