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DesignofOpticalandMechanicalStructureforLunarSimulatorBasedonVariableShapeandAdjustableRadiance

DOI: 10.11728/cjss2015.05.647, PP. 647-652

Keywords: Lunarsimulator,Adjustableshapesandradiance,Opticalsystem,Heatdissipation,Finiteelementanalysis

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Abstract:

Tosimulatethedifferentlunarphasesandensurecontinuousadjustabilityoftheradiantbrightness,anewbroadspectrumlightandfrostedglasswereappliedanddesignedintheopticalsystemforlunarsimulatorwiththeshapesandradiancebeingabletobeadjusted.Accordingtotheengineeringdemandandindexrequirementsoftheopticalsystem,threemajordesignaspectsareaddressed,includingthehighreliabilityandmaintainabilityforbroad-spectrumlight,heatdissipationinlunarsimulatorforlongworkinghours,andbearingofthemainframeunderdifferentworkingconditions.Bydesigningareasonablemachinestructure,andthroughthestructureitselfwiththematrixarrangementof48axialflowfans,aneffectivelycoolingairductisestablished.DeformationandtemperaturewerecalculatedbythefiniteelementsoftwareANSYS.Theresultsshowedthatthedisplacementdeformationreached0.33mmandstressdeformationreached0.02MPaatthetemperatureof20℃;whenthemainframewasinthetemperaturefieldbetween20℃and65℃,themaximumdisplacementdeformationreached13.30mmandmaximumstressdeformationis97.90MPa,andtheamountofthisdeformationisverysmallinconsideringofthemechanicalstructuredimensionsandweightofthelunarsimulator.

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