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    • 簡介:上海交通大學(xué)碩士學(xué)位論文某小型航空發(fā)動(dòng)機(jī)燃燒室雙級(jí)渦流器優(yōu)化設(shè)計(jì)姓名李迎春申請(qǐng)學(xué)位級(jí)別碩士專業(yè)動(dòng)力工程指導(dǎo)教師吳偉亮李概奇20080401IIOPTIMIZATIONDESIGNOFASMALLAEROENGINECOMBUSTORDOUBLESWIRLERABSTRACTOPTIMIZATIONDESIGNOFASMALLAEROENGINECOMBUSTORDOUBLESWIRLERABSTRACTTHISPAPERDESCRIBESANOPTIMIZATIONDESIGNOFASMALLAEROENGINECOMBUSTORDOUBLESWIRLERFORSOLVEAPROBLEMTHATOUTLETTEMPERATUREFIELDOFTHECOMBUSTORISINSTABLESOFTWAREFLUENTISUSEDFORNUMERICALSIMULATINGTHREEDIMENSIONALCOLDFLOWFIELDOFTHEDOUBLESWIRLER,ANDPIVMEASUREMENTSYSTEMISUSEDFORMEASURINGTHEFLOWFIELDTHREEDIMENSIONALNUMERICALSIMULATIONANDFLOWFIELDMEASUREMENTARECOMBINEDTOOPTIMIZETHEDOUBLESWIRLERFORTHEFIRSTTIMETHEOPTIMIZATIONDESIGNISCARRIEDONASFOLLOWINGATTHEFIRST,ATESTFACILITYISDESIGNEDFORTHESINGLEDOMEDOUBLESWIRLERFLOWFIELDMEASUREMENTANDBEFORETHEOPTIMIZATIONPROCESS,ATURBULENCEMODELUSEDINNUMERICALSIMULATIONHASBEENFIXEDBYCOMPARINGTHENUMERICALSIMULATIONDATAANDMEASUREMENTDATAOFORIGINALDOUBLESWIRLERAFTERWARDS,FIVEOPTIMIZATIONSCHEMESFOROUTLETEDGESHAPEOFSECONDARYSWIRLERAREADVANCED
      下載積分: 5 賞幣
      上傳時(shí)間:2024-03-01
      頁數(shù): 56
      8人已閱讀
      ( 4 星級(jí))
    • 簡介:中國民航大學(xué)碩士學(xué)位論文民用航空器使用困難信息統(tǒng)計(jì)預(yù)測(cè)研究姓名劉立明申請(qǐng)學(xué)位級(jí)別碩士專業(yè)飛行器設(shè)計(jì)指導(dǎo)教師田秀云20070306中國民航大學(xué)碩士學(xué)位論文ABSTRACTTHEVARIOUSDAMAGESORFAULTMAYBEFOUNDINTHESERVICEANDMAINTENANCEOFAIRCRAFT11LESERIOUSDAMAGEMAYCAUSEAIRCRANTOBEINDI伍CULTSERVICECONDITIONTHESERVICEDIFFFICULTRATEOFCIVILAIRCRAFIINCLUDINGTHEFAILURERATEREPORTEDBYALRCREWISTHEIMPORTANTMEASUREINDEXFORCIVILAIRCRAFT’SSAFETYOPERATIONACCURATELYFORECASTSERVICEDIFFICULTYRATEOFCIVILAIRCRAFTMAYPROVIDEDECISIONBASISTOIMPROVEAIRWORTHINESSANDMAINTELMBNCEMANAGEMENTINTHISTHESDS__ISVARIOUSFORECASTMETHOATHOMEANDABROADA’LEDISCUSSEDANDANALYZEDANDITISEMPHASIZEDTHATTHEAPPLICABILITYFORECASTINGCIVILAIRCRAFTSSERVICEDIFFICULTYRATEBYUSINGTHECLASSICALGRAYMODELGM1,1,APPROXIMATIONCENTERGM1,1ANDTIMINGRESIDUALSGM1,1N忙RESULTSSHOWTHATTHESATISFIEDFORECASTPRECISIONONCIVILAIRCRAFTSERVICEDIFFICULTYRATECANBEOBTAINEDBYUSINGCLASSICALGRAYMODELGM1,1THEEFFECTOFTHEHIAOFICALDATESEQUENCELENZDA011FORECASTRESULTISALSODISCUSSEDANALYSISSHOWSTHATTHERELATIVELYHIGHERFORECASTPRECISIONMAYBEOBTAINEDBYADOPTING12YEARLENGTHHISTODCULDATESEQUENCEASETOFSOFTWARESUITFORENGINEERINGHASBEENDEVELOPEDBYJA、,ALANGUAGE,ANDCANUSEDININTEMETTHESTATISTICALFORECASTSOFTWAREONCIVILAIRCRAFTSERVICEDIFFICULTMTEISCOMPILEDBYAUTHORANDITHASBEENINSTALLEDANDAPPLIEDINCIVILAIRCRAFTREPAIRSTATIONKEYWORDSSERVICEDIFFICULTRATE;FORECAST;GREYPRINCIPLEN
      下載積分: 5 賞幣
      上傳時(shí)間:2024-03-01
      頁數(shù): 56
      16人已閱讀
      ( 4 星級(jí))
    • 簡介:工學(xué)碩士學(xué)位論文航天器輻射傳遞系數(shù)算法研究SPACECRAFTRADIATIVETRANSFERCOEFFICIENTALGORITHMRESEARCH王正宇哈爾濱工業(yè)大學(xué)2009年6月CLASSIFIEDINDEXV4213UDC520DISSERTATIONFORTHEMASTERDEGREEINENGINEERINGSPACECRAFTRADIATIVETRANSFERCOEFFICIENTALGORITHMRESEARCHCANDIDATESUPERVISORACADEMICDEGREEAPPLIEDFORSPECIALTYAFFILIATIONDATEOFORALEXAMINATIONUNIVERSITYWANGZHENGYUPROFZHAOYANGMASTEROFENGINEERINGERGONOMICSANDENVIRONMENTDEPTOFASTRONAUTICENGINEERINGJUNE,2009HARBININSTITUTEOFTECHNOLOGY
      下載積分: 5 賞幣
      上傳時(shí)間:2024-03-01
      頁數(shù): 70
      2人已閱讀
      ( 4 星級(jí))
    • 簡介:南京航空航天大學(xué)碩士學(xué)位論文基于小波神經(jīng)網(wǎng)絡(luò)的航空發(fā)動(dòng)機(jī)控制與試驗(yàn)驗(yàn)證姓名許光華申請(qǐng)學(xué)位級(jí)別碩士專業(yè)航空宇航推進(jìn)理論與工程指導(dǎo)教師孫健國20080101基于小波神經(jīng)網(wǎng)絡(luò)的航空發(fā)動(dòng)機(jī)控制與試驗(yàn)論證IIABSTRACTMULTIVARIABLEADAPTIVEPIDCONTROLSCHEMEISSTUDIEDFATURBOFANENGINEINTHISTHESISPIDCONTROLMETHODBASEDONWAVELETNEURALWKNEURALWKPIDCONTROLMETHODBASEDONWAVELETNEURALWKAREPROPOSEDFATURBOFANENGINESOFTWAREHASBEENDESIGNEDFTHEHARDWAREINLOOPSIMULATIONPLATFMARESEARCHISDONEBYTHISSOFTWAREINTHEHARDWAREINLOOPSIMULATIONPLATFMBENEFITEDFROMWAVELETTRANSFMBEINGCONSTRICTIVEFLUCTUANTITSHOWSEXCELLENTTEMPALFREQUENCYLOCALIZATIONPROPERTYWHILEITPOSSESSESSUCHMERITSASABILITYOFMAPPINGNONLINEARSYSTEMSSELFLEARNINGSELFADAPTATIONSOONTHUSTHISWKCONVERGESQUICKLYWITHHIGHPRECISIONGOODROBUSTNESSTHISTHESISADOPTSWAVELETNEURALWKASIDENTIFIERADJUSTSTHEPARAMETERSOFTHEPIDCONTROLLERONLINEGETSTHEGOODRESULTSATLASTWEUSESOMEEXAMPLESTOVERTIFYTHEVALIDOFTHEMETHODSABOVEUSINGACERTAINTURBOFANAEROENGINEMODELASSTUDYOBJECTTHECONTROLLERSAREDESIGNEDWITHINTHEFLYENVELOPWITHTHECONTROLMETHODABOVETOBUILDTHEHARDWAREINLOOPSIMULATIONPLATFMWEUSEACOMPUTERASMODELACOMPUTERASCONTROLLERC8051F021SINGLECHIPITSRELATIVECIRCUITASSENSTHEDEFINITIONOFDATAINTERFACETHECOMMUNICATIONBETWEENSIGNALSAREACCOMPLISHEDWEUSEVISUALC60TODEVELOPTHESOFTWAREOFMODELCONTROLLERDEVELOPTHESOFTWAREOFC8051F021SINGLECHIPBYSILICONLABATIESIDESOMEHARDWAREINLOOPSIMULATIONSHAVEBEENCONDUCTEDTOTESTTHERESEARCHRESULTSTHESIMULATIONSDOSHOWTHATTHESERESULTSREALLYHAVEPRACTICALVALUESKEYWDSAEROENGINESWAVELETNEURALWKMULTIVARIABLEADAPTIVEPIDCONTROLLERHARDWAREINLOOPSIMULATIONDATACOMMUNICATIONC8051F021SINGLECHIP
      下載積分: 5 賞幣
      上傳時(shí)間:2024-03-01
      頁數(shù): 81
      5人已閱讀
      ( 4 星級(jí))
    • 簡介:中國民用航空學(xué)院碩士學(xué)位論文航空發(fā)動(dòng)機(jī)狀態(tài)評(píng)估系統(tǒng)開發(fā)姓名王帥申請(qǐng)學(xué)位級(jí)別碩士專業(yè)航空宇航推進(jìn)理論與工程指導(dǎo)教師許春生20041220中國民用航空學(xué)院碩士學(xué)位論文ABSTRACTWITHTLLER印IDDEVELOPMENTOFINFBHNATIONTECHNOLOGYANDTHEAPPLICATIONOFMANAGERIALTECHNIQUEOFAEROENGINENECT,TLLEMAINTEN柚CEMODEOFAEROENGINEHASCHANGED伊EATLYNOWADAYS,出EOLDMAIMENAILCEMODEWHICHMAINTAINSAEROENGINESACCORDINGTOTHEHARDTIMEISCOMINGTOTLLEENDFOR旭EX扛RLORDINARYLOSSBO血INECONOMYANDTIMEMEALL、、HILE,ANEWLYDEVELOPEDMAINTENANCEMODEHASBEENIMPKMET埔EDONAEROEN西NES,WHICHBRINGFONVARDSTLLATTHEAEROENGINESSHOMDBEMAINTAINEDACCORDINGTOITSREALCIRCUMSTANCETOLEARNTLLEHEALTLLSTATEOFAEMENGINESEXACTLYAILDQUICKLY,WENEEDAGOODASSESSMENTMETHODTHROUGHWHICHWECAILAPPOINT出EOPTIMUMTIRLLEFOFTHEFEMOVALOFAEROENGINESANDDRAWUPTHERATIONALMAIMENANCEPL砌NG0NMEBASISOFANALYZINGTHEDI船DⅥMTAGEOFSEVERALCURRENTASSESSMENTMETHODSOFAEROENGINE,TLLEHEALTILASSESSMENTSYSTEMOFAEROENGINEISCONSTRUCTCDWITHAHP/組AL”ICALHIERARCHYPMCESSTLLEORYAILDFUZ巧MAMTHISASSESSMENTSYSTEMCANCOMBINEQUALITATIVEDATAWI血QUANTITATIVEDATABYUSINGSU_BJECTIONNNCTIONANDCANBEUSEDINWEIGHTINGASSESSMCNTOF也EHCALTLLS詛TEOFA咖EN百NEWECAILTHISMCTHODFAHPFUZZYANAL”ICALHIERARCHYPMCESSEVERYAEROENGINEPRODUCESA孽EATDEALOFDA詛INITSDAILY、、ORHNGPROCESS,THESEDATURNCOME矗OMNIGHTCOURSE,WORKSHOP,TESTCELLA11DETCBYUSINGFAHPLWECAILE瓶CIENTLYINTEGRATEALLVALUABLEINFBNNATIONOFANACROENGINETOA11INDEX、VHICHEMBODIESTHEHEAL也STATEOF血EAEROEN垂NETHERESUNOFQUEUINGAEROENGI工1ENEETACCORDINGTOTLLEHCAL也INDEXWILLBEVERYHEIPFULFORENGIILEERSTOMANAGETHEAEROENGINENEETMORECONV商ENTB趾DC伍DENTLYWI也恤SUPPORTOFAER0ENG岫ALLLIFEMANAGEM咖D撕BASE,WHICHISBASEDONOMCLEDATAB髂E,也CACROENGMINTEGRATEDWEIGHTQUEUINGSYSTEMISDEVELOPEDNLISSYSTEMCANDEALW燭ALLHNDOFDAMMOFAEMENGINEAUTOM鰣CALLY,QUICKLYANDPRECISELYJTSAPPLICATIONREALIZEST11EDATAUPDATCAILDDATASHAREWHICH刪SMAILYADVANTAGESFORTHEDEVELOPMEMOFLONGDISTANCEANDRE“TIMEASSESSMENTOFACROENGINEKEYWORDSENGINCALLLIFEMANAGEMENT;AHPANAL螄CHIERARCHYPROCESS;SUBJECTLONFHNCTIONHEALMASSESSMENTLI
      下載積分: 5 賞幣
      上傳時(shí)間:2024-03-01
      頁數(shù): 55
      0人已閱讀
      ( 4 星級(jí))
    • 簡介:南京航空航天大學(xué)碩士學(xué)位論文航空專用網(wǎng)格中任務(wù)調(diào)度技術(shù)的研究姓名丁瑞申請(qǐng)學(xué)位級(jí)別碩士專業(yè)計(jì)算機(jī)應(yīng)用技術(shù)指導(dǎo)教師莊毅20080101航空專用網(wǎng)格中任務(wù)調(diào)度技術(shù)的研究IIABSTRACTABSTRACTTASKSCHEDULINGISONEOFTHEGRIDKEYTECHNOLOGIESWHOSEAIMISTHATUSER’TASKREQUESTCANBEDISTRIBUTEDTOGRIDRESOURCESREASONABLYWHICHCANACHIEVETHEAIMOFPERFMINGTASKEFFICIENTLYUSINGRESOURCESREASONABLYINSPECIALAVIATIONGRIDFAIRCRAFTVIRTUALDESIGNITINVOLVESALOTOFSUPERCOMPUTERSOFMATRIXTHEDIMENSIONOFMATRIXCANREACHMULTIMILLIONTHEUSER’TASKREQUESTNEEDSHIGHRESOURCECOMPUTINGCAPABILITYINDERTOPERFMTASKEFFICIENTLYTHERESEARCHONGRIDTASKSCHEDULINGTECHNOLOGYISABSOLUTELYNECESSARYFIRSTOFALLGRIDARCHITECTUREGRIDKEYTECHNOLOGYWASSTUDIEDGRIDTASKSCHEDULINGMODELTASKSCHEDULINGPROCESSSCHEDULINGALGITHMSWEREDEEPLYDISCUSSEDTHEACTERISTICSDEFICIENCYOFCURRENTGRIDTASKSCHEDULINGALGITHMWEREANALYZEDACCDINGTOTHEREQUESTOFSPECIALAVIATIONGRIDFAIRCRAFTVIRTUALDESIGNTHESPECIALAVIATIONGRIDMULTILEVELTASKSCHEDULINGSYSTEMWASDESIGNEDITSKEYFUNCTIONMODULESWEREDESIGNEDINDETAILGEICALGITHMWASIMPROVEDFROMEACHKEYLINKBASEDONTHEANALYSISOFITSACTERISTICSDEFICIENCYCOMBINEDWITHTHEACTERISTICSOFGLOBALSCHEDULERTHEREQUESTOFLARGESCALECOMPUTINGINAIRCRAFTVIRTUALDESIGNTHEGLOBALTASKSCHEDULINGALGITHMWASDESIGNEDTHEPARALLELISMOFGEICALGITHMWASANALYZEDCOMBINEDWITHTHEACTERISTICSOFLOCALSCHEDULERTHELOCALTASKSCHEDULINGALGITHMWASDESIGNEDTHESIMULATIONEXPERIMENTWASCARRIEDOUTWITHGRIDSIMSIMULATIONTOOLTHEEXPERIMENTALRESULTSINDICATETHATTHETASKCOMPLETIONTIMERESOURCEUTILIZATIONCOSTOFIMPROVEDGEICALGITHMWEREIMPROVEDTHEGLOBUSTOOLKITWASSTUDIEDTHELOCALSCHEDULINGSUBSYSTEMWASREALIZEDINITIALLYTHEFEASIBILITYEFFECTIVENESSOFTHESUBSYSTEMBYAPRACTICALEXAMPLEINTHESPECIALAVIATIONGRIDTASKSCHEDULINGSYSTEMFAIRCRAFTVIRTUALDESIGN,KINDSOFFACTSAIMINGATGRIDCOMPUTINGRESOURCEWASCONSIDEREDTHEPERFMANCEOFGRIDTASKSCHEDULINGWASIMPROVEDITWILLMAKETHEPAVEMENTFTHEDEVELOPMENTOFTECHNOLOGIESINAIRCRAFTVIRTUALDESIGNDOMAINKEYWDSGRIDGRIDARCHITECTUREVIRTUALDESIGNTASKSCHEDULINGGEICALGITHMQUALITYOFSERVICE
      下載積分: 5 賞幣
      上傳時(shí)間:2024-03-01
      頁數(shù): 75
      6人已閱讀
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