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1、SAND2004-0073UnlimitedReleasePrintedJune2004BladeSystemDesignStudiesVolumeII:PreliminaryBladeDesignsandRecommendedTestMatrixDaytonA.GriffinGlobalEnergyConcepts,LLC5729LakeviewDriveNE,#100Kirkland,Washington98109AbstractAspartoftheU.S.DepartmentofEnergy’sWindPartnershipsforAdvancedComponentT
2、echnologies(WindPACT)program,GlobalEnergyConcepts,LLCisperformingaBladeSystemDesignStudy(BSDS)concerninginnovationsinmaterials,processesandstructuralconfigurationsforapplicationtowindturbinebladesinthemulti-megawattrange.TheBSDSVolumeIprojectreportaddressesissuesandconstraintsidentifiedtosc
3、alingconventionalbladedesignstothemegawattsizerange,andevaluatedcandidatematerials,manufacturinganddesigninnovationsforovercomingandimprovinglargebladeeconomics.Thecurrentreport(VolumeII),presentsadditionaldiscussionofmaterialsandmanufacturingissuesforlargeblades,includingasummaryofcurrentt
4、rendsincommercialblademanufacturing.SpecificationsarethendevelopedtoguidethepreliminarydesignofMW-scaleblades.Usingpreliminarydesigncalculationsfora3.0MWblade,parametricanalysesareperformedtoquantifythepotentialbenefitsinstiffnessanddecreasedgravityloadingbyreplacementofabaselinefiberglasss
5、parwithcarbon-fiberglasshybridmaterial.Completepreliminarydesignsarethenpresentedfor3.0MWand5.0MWbladesthatincorporatefiberglass-to-carbontransitionsatmid-span.Basedonanalysisofthesedesigns,technicalissuesareidentifiedanddiscussed.Finally,recommendationsaremadeforcompositestestingunderPartI
6、IoftheBSDS,andtheinitialplannedtestmatrixforthatprogramispresented.3AcknowledgementsThisworkwascompletedforSandiaNationalLaboratoriesaspartoftheU.S.DepartmentofEnergy’sWindPACT.TheauthorwishestoacknowledgethecontributionsofSandiaTechnicalMonitorTomAshwill,PaulVeers,andotherSandiapersonnelto
7、thisproject.TheNuMADinterfacetoANSYS,developedbyDanielLairdofSandia,wasusedextensivelytofacilitatethebladedesignsandanalysesperformedinthiswork.Thisprojecthasalsobenefitedfromextensivecollaborationwithmanufacturersofcompositematerials,windturbineblades,a
