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1、LunarLanderStructuralDesignStudiesatNASALangleyK.ChaunceyWu,*JeffreyAntol,†JudithJ.Watson,*RudolphJ.Saucillo,†DavidD.North†andDanielD.Mazanek†NASALangleyResearchCenterHampton,Virginia23681-2199AbstractTheNationalAeronauticsandSpaceAdministrationiscurrentlydevelopingmissionarchitectures,vehicleconcep
2、tsandflighthardwaretosupporttheplannedhumanreturntotheMoon.DuringPhaseIIofthe2006LunarLanderPreparatoryStudy,ateamfromtheLangleyResearchCenterwastaskedwithdevelopingandrefiningtwoproposedLanderconcepts.TheDescent-Assisted,SplitHabitatLanderconceptusesadisposablebrakingstagetoperformthelunarorbitinse
3、rtionmaneuverandmostofthedescentfromlunarorbittothesurface.Thesecondconcept,theCargoStarHorizontalLander,carriesascentloadsalongitslongitudinalaxis,andisthenrotatedinflightsothatitsmainengines(mountedperpendiculartothevehiclelongitudinalaxis)arecorrectlyorientedforlunarorbitinsertionandahorizontalla
4、nding.BothLandershaveseparatecrewtransportvolumesandhabitatsforsurfaceoperations,andallowplacementoflargecargoelementsveryclosetothelunarsurface.Aspartofthisstudy,lightweight,efficientstructuralconfigurationsforthesespacecraftwereproposedandevaluated.Vehiclestructuralconfigurationswerefirstdeveloped
5、,andpreliminarystructuralsizingwasthenperformedusingfiniteelement-basedmethods.Resultsofselectedstructuraldesignandtradestudiesperformedduringthisactivityarepresentedanddiscussed.NomenclatureAMA=AnalyticalMechanicsAssociates,Inc.CaLV=AresVCargoLaunchVehicleCEV=OrionCrewExplorationVehicleCLV=AresICre
6、wLaunchVehicleCSM=ApolloCommand/ServiceModulesDASH=DescentAssisted,SplitHabitatdelta-V=PropulsivechangeinmotionEDS=EarthdeparturestageESAS=ExplorationSystemsArchitectureStudyEVA=Extravehicularactivityg=StandardgravitationalaccelerationatEarthsurfaceKSC=KennedySpaceCenterLaRC=LangleyResearchCenterLEO
7、=LowEarthorbitLIDS=Low-ImpactDockingSystemLLO=LowlunarorbitLLPS=LunarLanderPreparatoryStudy____________________*AerospaceEngineer,StructuralMechanicsandConceptsBranch,RTD.8WestTaylorStreet,MailStop190
