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旋翼螺旋桨的快速气动优化设计（英文）.docx

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旋翼螺旋桨的快速气动优化设计（英文） Title:FastAerodynamicOptimizationDesignofRotorBlades Abstract: Rotorbladesofhelicoptersareacriticalcomponentthatsignificantlyaffectstheoverallperformanceandefficiencyoftheaircraft.Afastandefficientaerodynamicoptimizationdesignprocessforrotorbladesisessentialtoimproveflightcharacteristics,reducevibrations,andincreasefuelefficiency.Inthispaper,weexplorevariousmethodsandtechniquesthatcanbeemployedforquickeraerodynamicoptimizationofrotorblades. Introduction: Helicoptersrelyonrotorbladestogenerateliftandpropulsion,makingthedesignoftherotorbladescrucialforsafeandefficientflight.Traditionalmethodsofrotorbladedesignaretime-consumingandmaynotprovideoptimalsolutions.Therefore,thereisaneedforfastaerodynamicoptimizationdesignapproachesforrotorbladestominimizedesigniterationanddevelopmenttime. I.DesignExploration: 1.Parameterization:Rotorbladedesignscanbedescribedusingvariousparameterizationmethods,suchascamberlines,airfoilshapes,twistdistribution,andbladethickness.Theseparametersdeterminetheshapeandperformanceoftherotorblades. 2.ComputationalFluidDynamics(CFD)Simulations:CFDplaysavitalroleinevaluatingrotorbladeperformance.ByusingCFDsimulations,wecanquicklyassessdifferentdesignconfigurationstopredictlift,drag,andotheraerodynamiccharacteristics. 3.DesignofExperiments(DOE):DOEtechniques,suchasLatinhypercubesamplingandresponsesurfacemethodology,canbeusedtoefficientlyexplorethedesignspacebyrunningalimitednumberofsimulationcases.Thisenablestheidentificationofcriticaldesignparametersandtheirrespectiveinfluenceonperformance. II.OptimizationTechniques: 1.GeneticAlgorithms(GA):GAisanevolutionaryoptimizationalgorithminspiredbynaturalselection.Itcanefficientlysearchforoptimalrotorbladedesignsbygeneratingapopulationofpossiblesolutionsanditerativelyimprovingthembasedonfitnesscriteria. 2.Surrogate-BasedOptimization(SBO):SBOinvolvesconstructingsurrogatemodelsfromtheCFDsimulationdatatoreplacecomputationalexpensiveevaluations.Thesesurrogatemodelscanthenbeusedinoptimizationalgo