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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
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上傳時(shí)間:2024-03-01
頁數(shù): 56
大?。?1.79(MB)
子文件數(shù):
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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
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上傳時(shí)間:2024-03-01
頁數(shù): 56
大小: 1.39(MB)
子文件數(shù):
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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
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上傳時(shí)間:2024-03-01
頁數(shù): 70
大小: 1.88(MB)
子文件數(shù):
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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
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上傳時(shí)間:2024-03-01
頁數(shù): 81
大?。?3.94(MB)
子文件數(shù):
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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
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上傳時(shí)間:2024-03-01
頁數(shù): 55
大?。?2.6(MB)
子文件數(shù):
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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
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上傳時(shí)間:2024-03-01
頁數(shù): 75
大小: 0.47(MB)
子文件數(shù):
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簡介:碩士學(xué)位論文非合作航天器單目視覺快速位姿確定算法研究APPROACHTOFASTRELATIVEPOSITIONATTITUDEDETERMINATIONBASEDONMONOVISIONFNONCOOPERATIVESPACECRAFTS楊琳雪哈爾濱工業(yè)大學(xué)2010年7月CLASSIFIEDINDEXTP273UDC68152DISSERTATIONFTHEMASTERDEGREEINENGINEERINGAPPROACHTOFASTRELATIVEPOSITIONATTITUDEDETERMINATIONBASEDONMONOVISIONFNONCOOPERATIVESPACECRAFTSCIDATEYANGLINXUESUPERVISPROFDUANGUANGRENDEPUTYSUPERVISPROFSONGSHENMINGACADEMICDEGREEAPPLIEDFMASTEROFENGINEERINGSPECIALTYCONTROLSCIENCEENGINEERINGAFFILIATIONCENTERFCONTROLTHEYGUIDANCETECHNOLOGYDATEOFDEFENCEJULY2010DEGREECONFERRINGINSTITUTIONHARBININSTITUTEOFTECHNOLOGY
下載積分: 5 賞幣
上傳時(shí)間:2024-03-01
頁數(shù): 69
大?。?0.86(MB)
子文件數(shù):
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簡介:南昌大學(xué)碩士學(xué)位論文低壓鑄造在大型薄壁航空鋁合金鑄件上的應(yīng)用研究姓名馮喜瑞申請(qǐng)學(xué)位級(jí)別碩士專業(yè)材料科學(xué)指導(dǎo)教師周浪甘武奎20071020ABSTRACTABSTRACTTHELOWPRESSURECASTINGTECHNOLOGYISAKINDOFMOREADVANCEDCASTTECHNOLOGY,THISTECLMOLOGYMECHANIZATIONANDAUTOMATIONLEVELISHIGH,CASTQUALITYISSTABILIZEDTHERESEARCHOFTHISPAPERSOLVESTHELARGEANDTHINWALLAERIALCASTMETALLURGICALQUALITYPROBLEMOFALUMINUMALLOYUSINGTHELOWPRESSUREC硼TILLGTECHNOLOGYTHROUGHCASTSMMTURALANALYSISANDTHELOWPRESSURECAST崦PRINCIPLEANALYSIS,HAVEDESIGNEDTHECASTSYSTEMANDGOUR∞1口ECHNOLOGYSCHEMEOFTHELOWPRESSURECASTING;THROLLGHCOMPUTERIMITATETOSOLIDIFYTECHNICALANDTECHNOLOGYEXPERIMENTFORCASTMGSYSTEM,CASTINGPRESSURE,CASTINGTIME,KNOTSHELLTIME,CRYSTALLIZATIONPRESSURE,DWELLTIMEANDCASTINGTEMPERATUREETCVERIFYORTESTMAKINGSULETHECASTPRODUCTIONTECHNOLOGYANDCOURSETECHNOLOGYPARAMETER,HAVESOLVEDCASTMETALLURGICALQUALITYPROBLEMANDMAKINGTHEQUALIFIEDRATEOFTHECASTT0RAISETO80%I【EYWORDLOWPRESSURECASTING;LARGETHINWALLCAST;ALUMINUMALLOY;COMPUTERSIMULATIONⅡ
下載積分: 5 賞幣
上傳時(shí)間:2024-03-01
頁數(shù): 50
大?。?1.31(MB)
子文件數(shù):
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簡介:西北工業(yè)大學(xué)碩士學(xué)位論文基于PETRI網(wǎng)的綜合航空電子系統(tǒng)性能分析姓名劉曉斌申請(qǐng)學(xué)位級(jí)別碩士專業(yè)系統(tǒng)工程指導(dǎo)教師吳勇20060301兩北工業(yè)大學(xué)碩1J論史基于PETRI網(wǎng)的綜臺(tái)航空乜子系統(tǒng)性能分析ABSTRACTSYSTEMPERFORMANCEEVALUATIONISTHEIMPORTANTTHEORETICALBASISANDSUPPORTINGTECHNOLOGYOFTHEDEVELOPMENTOFCOMPUTERSYSTEMANDNETWORK,THEREARETHREEMAJORAIMSFORITSELECTION,DESIGNANDIMPROVEMENTTHATISTOSAYTHATTHROU曲THEEVALUTION,THECOMPARATIVELYBETTERSYSTEMWILLBESELECTED,ANDTHATTHEOPTIMUMDESIGNANDCONFIGURATIONWILLBEOBTAINEDONTHEBASISOFIT,ANDTHATTHEOPERATIONEFFICIENCYWILLALSOBEINCREASEDBYIMPROVINGTHECURRENTSYSTEMTHETHESISAREPETRINETSPN一BASEDPERFORMANCEANALYSISOFINTEGRATEDAVIONICSSYSTEMTHROUGHTHEANALYSISOFRELIABILITYANDDATABUSPERFORMANCEINDEXOFINTEGRATEDAVIONICSSYSTEMCANOPTIMIZEINTEGRATEDAVIONICSSYSTEMSIMULMINGRELIABILITYANDMILSTD1553B1553BOFINTEGRATEDAVIONICSSYSTEMBYTHEDETERMINISTICANDSTOCHASTICPETRINETSDSPNANDSTOCHASTICPETRINETSSPNARETHEMETHODSOFTHETHESISTHECONTENTOFTHISTHESISARESHOWNASFOLLOWINGFIRSTLY,BUILDINGTHEMODELOFSYSTEMBYPHIISNOTONLYTOGETSTEADYMEANOFPERFORMANCEINDEXOFSYSTEM,BUTALSOTOGETTHELAWOFCHANGEBYTIMETHERESUROFRESEARCHINDICATSTHERELIABILITYOFSERIESMODEL,THEBUSLOADOF1553B,SYSTEMDELAYTIMESECONDLY,THEOTHERIMPORTANTPOINTISTORAISETHEMODELOFEVALUATINGINTEGRATEDAVIONICSPERFORMANCE,INCLUDINGTHEUSEOFFUZZYTHEANALYTICHIERARCHYPROCESSFAHPFINALLY,F(xiàn)ILEMODELANDMETHODSOFPERFORMANCEEVALUATIONISEFFECTIVEMETHODINEVALUATINGDIFFERENCEOFVARITYOFSYSTEMTHEANALYSISOFTHEDATAANDCURVEOFMODELCANPROVIDEINDEXOFSYSTEMPERFORMANCETHEINDEXOFSYSTEMCANPROVIDEANIMPORTANTTHEORETICALBASISFORTHEDENGNANDIMPROVEMENTOFTHESYSTEMKEYWORDSINTEGRATEDAVIONICSSYSTEMPETRINET1553BDATABUSRELIABILITYPERFORMANCEEVALUATION11
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上傳時(shí)間:2024-03-01
頁數(shù): 67
大小: 2.05(MB)
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簡介:工學(xué)博士學(xué)位論文航空潤滑油流變特性及其對(duì)潤滑性能影響的研究王燕霜哈爾濱工業(yè)大學(xué)2006年3月CLASSIFIEDINDEXTH1172UDC62189DISSERTATIONFTHEDOCTALDEGREEINENGINEERINGSTUDYOFRHEOLOGICALBEHAVIOFAVIATIONLUBRICATINGOILITSEFFECTONLUBRICATIONPERFMANCECIDATEWANGYANSHUANGSUPERVISPROFWANGLIQINASSOCIATESUPERVISPROFYANGBOYUANACADEMICDEGREEAPPLIEDFDOCTOFENGINEERINGSPECIALITYMACHINEDESIGNTHEYAFFILIATIONSCHOOLOFMECHANTRONICENGINEERINGDATEOFDEFENCEMARCH,2006DEGREECONFERRINGINSTITUTIONHARBININSTITUTEOFTECHNOLOGY
下載積分: 5 賞幣
上傳時(shí)間:2024-03-01
頁數(shù): 134
大小: 1.67(MB)
子文件數(shù):
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簡介:東北大學(xué)碩士學(xué)位論文航空O形橡膠密封圈性能測(cè)試系統(tǒng)研制姓名韋杰申請(qǐng)學(xué)位級(jí)別碩士專業(yè)機(jī)械制造及其自動(dòng)化指導(dǎo)教師原所先20040201東北大學(xué)碩士學(xué)位論文摘要計(jì),解決了原設(shè)計(jì)中人工操作帶來的各種不便。應(yīng)用程序的開發(fā)使整個(gè)測(cè)試過程更加直觀,實(shí)現(xiàn)了整個(gè)控制系統(tǒng)的自動(dòng)化。關(guān)鍵詞0形圈,性能測(cè)試,液壓系統(tǒng),密封,泄漏M
下載積分: 5 賞幣
上傳時(shí)間:2024-03-01
頁數(shù): 64
大?。?2.25(MB)
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簡介:工學(xué)碩工學(xué)碩士學(xué)位論文士學(xué)位論文基于對(duì)偶四元數(shù)的航天器相對(duì)導(dǎo)航方法研究STUDYONRELATIVENAVIGATIONMETHODFORSPACECRAFTBASEDONDUALQUATERNION崔本杰崔本杰哈爾濱工業(yè)大學(xué)哈爾濱工業(yè)大學(xué)2009年6月CLASSIFIEDINDEXV4482UDC62978DISSERTATIONFORTHEMASTERDEGREEINENGINEERINGSTUDYONRELATIVENAVIGATIONMETHODFORSPACECRAFTBASEDONDUALQUATERNIONCANDIDATECUIBENJIESUPERVISORPROFSUNZHAOWEIACADEMICDEGREEAPPLIEDFORMASTEROFENGINEERINGSPECIALITYSPACECRAFTDESIGNAFFILIATIONRESEARCHCENTEROFSATELLITETECHDATEOFDEFENCEJUNE,2009DEGREECONFERRINGINSTITUTIONHARBININSTITUTEOFTECHNOLOGY
下載積分: 5 賞幣
上傳時(shí)間:2024-03-01
頁數(shù): 114
大?。?4.98(MB)
子文件數(shù):
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簡介:分類號(hào)UDC密級(jí)1933868學(xué)位論文航空薄壁結(jié)構(gòu)件加工變形數(shù)值仿真研究作者姓名張延成指導(dǎo)教師鞏亞東教授申請(qǐng)學(xué)位級(jí)別學(xué)科專業(yè)名稱論文提交日期學(xué)位授予日期東北大學(xué)先進(jìn)制造與自動(dòng)化技術(shù)研究所碩士學(xué)科類別工學(xué)機(jī)械制造及其自動(dòng)化2008年1月日2008年3月日評(píng)閱人矯穡,彳不謠論文答辯日期2008年2月日答辯委員會(huì)席參1灑叫東北大學(xué)2008年2月ADISSERTATIONINMECHANICALMANUFACTURINGANDAUTOMATIONTHENUMERICALSIMULATIONSTUDYONMACHININGDEFORMATIONOFTHEAERONAUTICTHINWALLEDSTRUCTURECOMPONENTSBYZHANGYANCHENGSUPERVISORPROFESSORGONGYADONGNORTHEASTERNUNIVERSITYFEBRUARY2008
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上傳時(shí)間:2024-03-01
頁數(shù): 96
大小: 3.17(MB)
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簡介:中南大學(xué)碩士學(xué)位論文航空剎車用C/C復(fù)合材料摩擦磨損行為研究姓名李江鴻申請(qǐng)學(xué)位級(jí)別碩士專業(yè)材料學(xué)指導(dǎo)教師熊翔20020101中南大學(xué)碩士學(xué)位論文ABSTRACTC/CCOMPOSITESIS也ELATESTAIRCR硪銜CTIONMATERIALANDMEIR銜CTIONANDWEARPROPENIESAREVCRYIMPONANT.FRICTIONANDWEARPROPERTIESOFC/CCOMPOSITESF沁M(jìn)DI日’ERENTTECHNIQUESWERESTUDIEDANDEH色CTSOFBRAL【INGSPEEDSAILDPRESSURESWEREALSOANALYZEDINORDERTOJNQUIREINTOTHEWOMMECHAJLISMS,T11EMORPHOLOGYANDS【RUCTUREOFWOMSURFACESAND、VEARDEB“SWEREEXAMINEDTHROUGHUSI“GOPTICALMICROSCOPHSCARMINGEKCTRONNLICROSCOPY,XRAYDIF疔ACTION,JASERRARNANMICMSPECTROSCOPY1FRICTIONANDWEARPROPERTIESOFC/CCOMPOSITESWITHDIFREREMPYROL”ICCARBONMICROSTRUCTUREWERESTUDIED.ITSHOWEDTHATC/CCOMPOSITESMAINLYWITHROU曲FAMJNARRLPYROJ如CCARBONHAVESMAIIUNIFOMLWEARDEBRJSANDTHEMOSCSTABIEFRICTIONAND、、EARPROPENIES,WHKHCANMAIM“NATHIGHBRAKINGSPEEDSANDPRESSUREANDTHELINEARⅥ’EARISUNDER2UN1/PLAIE.TIME,OWINGTOTHEHIGHESTDEGREESOFGRAPHITIZATIONANDTHERMALCONDUCTIVITIES.C/CCOMPOSITESMAINLYWITHSMOOM1AMINARSLPYR。L”ICCARBONHAVEUNSTABLEPROPENIESOFFHCTIONANDWEAROWJNGTOLOWERGRAPHITIZATIONDE目EESANDTHERMALCONDUC“VITIES.C,CCOMPOSITESIMPREGNATEDONLYBYPITCHHAVETHEHI曲ESTWEARRATESANDTHE1INEARWEARISUPTO2733UM/PLATETIME.2THEFRJCTIONANDWEARPROPC九JESOFC/CCOMPOSJTESUNDERDJFRERENTBRAKINGSPEEDSANDPRESSURESWEFESTUDIEDTHERESULTSSHOWEDATBRAKINGSPECDOF10N1/STHEREISAPEAKINCOEMCIENTOF_FRICTIONSPEEDCUⅣESWHENTHEBRAKINGPRCSSUREISKEPTAT60N/CM2,ANDWEARMTESINCFEASEDWITHBRAKINGSPEEDANDTHEWEIGHTLOSSINCREASED1ARGE】YATHJGHERBRAKINGSPEEDSOWI五GTOOXIDATION,ESPECIALIYTOC/CCOMPOSITESWITHIOWCONDUC“VITIES;WITHTHEJNCRCASEOFBRAKINGPRESSURETHECOEFNCIENTOFFRICTIONDECREASED1IGHTLYBUTTHEWEIGHTLOSSINCREASED,ESPECLALLYTOC/CCOMPOSITESWITH10WCONDUCTIVITIES.
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上傳時(shí)間:2024-03-01
頁數(shù): 92
大?。?2.59(MB)
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簡介:西北工業(yè)大學(xué)碩士學(xué)位論文某型航空發(fā)動(dòng)機(jī)數(shù)控仿真系統(tǒng)軟件設(shè)計(jì)研究姓名陳偉靜申請(qǐng)學(xué)位級(jí)別碩士專業(yè)控制理論與控制工程指導(dǎo)教師李華聰20030301西北工業(yè)大學(xué)碩學(xué)位論文ABSTRACTABSTRACTRESULTFROMTHEDEVELOPINGOFAEROPROPULSIONTECHNOLOGYANDMULTIVARIABLECONTROLTECHNOLOGYEXTRAHI曲CONTROLPRECISIONISDEMANDEDINORDERTOMEETTHEDEMAND,AEROENGINECONTROLSYSTEMBECOMESMOREANDMORECOMPLICATED,HYDRAULICSYSTEMTHATUSEDWIDELYINTHEPASTISHARDTOORCANNOTACHIEVETHATPRECISIONTHEDIGITALELECTRONICCONTROLLERCHARACTERSWITHHIGHRUNNINGSPEED,HIGHPRECISION,F(xiàn)LEXIBILITYINDESIGNINGETC,ITOVERWHELMSTHEOTHERDESIGNMETHODINAEROENGINECONTROLLERDESIGNWHATTHEPAPERDISCUSSESISPARTOFAEROEILGINEREALTIMEDIGITALELECTRONICCONTROLSIMULATIONSYSTEMTHROUGHANALYZINGTHEREQUIREMENTINTECHNOLOGYANDFUNCTIONSOFTHESYSTEM,THISPAPERPRESENTSTEEHNIQTIESTOBUILDTHESYSTEM,THEPAPERFOCUSESONSOFTWAREDESIGNING,INCLUDINGSIMULATINGDIGITALCONTROLLERCOMMUNICATINGBETWEENCOMPUTERSANDCOMPUTERWITHOTHERDEVICES,ANDGRAPHICSINTERFACEWITHUSERANDINTERFACESWITHHARDWARE,THEPROJECTCANMEETTHEREQUIREMENTFORENGINEERINGAPPLICATIONTHROU曲PRIMARYTESTINGKEYWORDSAEROENGINE,AEROENGINECONTROL,REALTIMEDIGITALELECTRONICSIMULATIONSIMULATIONSYSTEM,SOFTWAREDESIGN
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上傳時(shí)間:2024-03-01
頁數(shù): 81
大小: 2.25(MB)
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