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    醫(yī)學綜合 中醫(yī)養(yǎng)生 醫(yī)學研究 身心發(fā)展 醫(yī)學試題 影像醫(yī)學 醫(yī)院辦公 外科醫(yī)學 老年醫(yī)學 內(nèi)科醫(yī)學 婦產(chǎn)科 神經(jīng)科 醫(yī)學課件 眼鼻喉科 皮膚病科 腫瘤科 兒科醫(yī)學 康復醫(yī)學 全科醫(yī)學 護理學科 針灸學科 重癥學科 病毒學科 獸醫(yī) 藥學
    • 簡介:首都經(jīng)濟貿(mào)易大學碩士學位論文民用航空器噴漆機庫防爆區(qū)域劃分的研究姓名李彩彩申請學位級別碩士專業(yè)安全技術及工程指導教師鈕英建20070301ABSTRACTTHEMEXISTDIFFERENTKINDSOFCOMBUSTIBLESINTHEPAINTINGHANGAR,WHENMEETINGWITHELECTRIC,BURNINGOREXPLOSIONWILLBECAUSED.THEPAINTANDSOLVENTUSEDFORPAINTINGALECOMBUSTIBLELIQUIDWITHVOLATILITY,WHENTHEIRMIXTUREWITHAIRREACHEXPLOSIONLIMIT,ITISPOSSIBLETOEXPLODEORBUMIFMEETINGWITHELECTRICIGNITER.SOFIREPROOFEXPLOSIONELECTRICFACILITYSHOULDBEUSEDINEXPLOSIONANDFIREHAZARDOUSAREA,INORDERTOUSINGPROPERTYPES,WEMUSTHAVETHEHAZARDOUSAREADIVISION.CONTRASTTOGERMANSTANDARDANDAMERICANSTANDARDABOUTPAINTINGHANGAR,THEREWILLBEOBVIOUSDIFFERENCEWITHREGULATIONSINCCARSTANDARD‘‘PAINTINGHANGARDESIGNRULES“.WENEEDSTUDYTHEDIVISIONOFITSEXPLOSIONPROOFAFEAACCORDINGTOHAZARDRATING,RELATIVEDENSITY,EXPLOSIONLOWERLIMITANDVENTILATINGOFTHEHAZARDARTICLESINPAINTINGHANGARINORDERTOITSUSEFULANDREASONABLE.INTHISARTICLE.FIRSTISTHEINTRODUCTIONABOUTPAINTINGWORK.ITINCLUDESURFACETREATMENT,PAINTINGANDDRYNESS,THENEXTISTHEELECTRICFIREANDEXPLOSIVEHAZARDFACTORANALYSIS.ANDTHENISTHENUMERATIONTOTHEHAZARDRATINGANDVENTILATINGOFTHEHAZARDARTICLESINPAINTINGHANGAR,THELASTISTHESUGGESTONTHEDIVISIONOFPAINTINGHANGAREXPLOSIONPROOFAREA.KEYWORDSAIRCRAFTPAINTINGHANGEREXPLOSIONPROOFAREATHEDIVISIONOFEXPLOSIONPROOFAREA
      下載積分: 5 賞幣
      上傳時間:2024-03-01
      頁數(shù): 45
      2人已閱讀
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    • 簡介:中國民航大學碩士學位論文基于MT的航空維修工程調(diào)查系統(tǒng)的設計與實現(xiàn)姓名付金華申請學位級別碩士專業(yè)人機與環(huán)境工程指導教師孫春林20080328ABSTRACTWITHTHEFASTDEVELOPMENTOFCHINESECIVILAVIATION,HOWTOMAKETHEAIRPLANESANDPARTSMAINTAINAIRWORTHINESS、RELIABILITYANDECONOMYBECOMESMOREANDMOREIMPORTANTINAIRLINEREDUCINGMAINTENANCECOST,IMPROVINGMAINTENANCEQUALITYANDINSURINGAIRPLANECONTINUESAIRWORTHINESSARETHEIRPERSISTENTTARGETRELIABILITYMANAGEMENTISNOTONLYTHEIMPORTANTCONTENTOFAVIATIONMAINTENANCESAFETYMANAGEMENT,BUTALSOANINDISPENSABLEPARTINCONTINUOUSAIRWORTHINESSMAINTENANCEPROGRAMENGINEERINGINVESTIGATIONISALLIMPORTANTPARTINRELIABILITYMANAGEMENT,WHICHAIMISTOFINDOUTTHEROOTCAUSEOFTHEFAULT,ANDTOKEEPTHEALREADYDEGENERMESYSTEMRELIABILITYONACCEPTABLELEVELEVALUATINGAIRPLANESAFETYSTATE,F(xiàn)ORECASTINGSAFETYTREND,F(xiàn)INDINGANDRESOLVINGHIDDENSAFETYTROUBLEHASBECAMEANURGENTQUESTIONBEFORETHEACCIDENTOCCURRESCONSIDERINGTHEPRESENTSAFETYMANAGEMENTACTUALITYOFAVIATIONMAINTENANCECORPORATIONS,CIVILAVIATIONSAFETYMANAGEMENTSYSTEMFROMCONTINUINGANALYSISANDSURVEILLANCESYSTEMCASS,RISKMANAGEMENTANDHUMANFACTORSISSTUDIEDMANAGEMENTOVERSIGHTANDRISKTREEMORTANALYSISMODELANDENGINEERINGINVESTIGATIONMANAGEMENTFLOWARERESEARCHEDANENGINEERINGINVESTIGATIONROOTCAUSEANALYSISKNOWLEDGEDISCOVERYMODELISBUILTWHICHCOMBINEMORTWITHRELIABILITYMANAGEMENTTHEORY,EXPATIATEACCIDENTANALYSISILLATIONPROCESS,PROPOSETHEIDEAOFASSUMEDRISKANDDEVELOPANENGINEERINGINVESTIGATIONSYSTEMBASEDONMORTATLAST,TAKINGEXAMPLEOFTHEWINDSCREENFALLOFFINBAC111AIRCRAFTCLIMBOFBRITISHAIRWAYS,THEROOTCAUSEOFTHEACCIDENTISGAINEDTHROUGHVALIDATINGANDANALYZINGBASEDONTHESYSTEMTHEINSTANCEPROVESTHATTHESYSTEMISFEASIBLEANDVALID,ANDCALLBEAPPLIEDTOAVIATIONMAINTENANCEMANAGEMENTKEYWORDSSAFETYMANAGEMENTOFAVIATIONMAINTENANCE;RELIABILITYMANAGEMENT;ENGINEERINGINVESTIGATION;ROOTCAUSE;MANAGEMENTOVERSIGHTANDRISKTREE
      下載積分: 5 賞幣
      上傳時間:2024-03-01
      頁數(shù): 96
      7人已閱讀
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    • 簡介:中圖分類號V2313論文編號102870213B012學科分類號082502博士學位論文航空發(fā)動機氣動穩(wěn)定性分析系統(tǒng)研究研究生姓名趙運生學科、專業(yè)航空宇航推進理論與工程研究方向航空發(fā)動機總體性能指導教師胡駿教授南京航空航天大學研究生院能源與動力學院二О一三年六月NANJINGUNIVERSITYOFAERONAUTICSASTRONAUTICSTHEGRADUATESCHOOLCOLLEGEOFENERGYPOWERENGINEERINGRESEARCHONAERODYNAMICSTABILITYANALYSISSYSTEMFAEROENGINEATHESISINAEROSPACEPROPULSIONTHEYENGINEERINGBYZHAOYUNSHENGADVISEDBYASSOCIATEPROFESSHUJUNSUBMITTEDINPARTIALFULFILLMENTOFTHEREQUIREMENTSFTHEDEGREEOFDOCTOFPHILOSOPHYJUNE2013
      下載積分: 5 賞幣
      上傳時間:2024-03-01
      頁數(shù): 186
      0人已閱讀
      ( 4 星級)
    • 簡介:電子科技大學碩士學位論文航空發(fā)動機測試可視化再現(xiàn)系統(tǒng)的開發(fā)與研究姓名劉德悟申請學位級別碩士專業(yè)機械電子工程指導教師李迅波20080501眾轉(zhuǎn)S瞰了RABSTRACTALONGWITHTHEDEVELOPMENTOFOURCOUNTRYAIRCRAFTENGINEGASTURBINEENGINETESTTECHNOLOGYNEEDSTOBESOLVEDURGENTLYINTHETESTTHEMASSIVEDATAISABSTRACTWHICHLACKSTHEREADABILITYTHEREFORE,WENEEDTOCARRYONTHEVISUALIZATIONPROCESSINGOFTHEINFORMATI011THISARTICLEISABOUTTHERESEARCHWHICHBASESONSOMEGASTURBINEENGINERESEARCHINSTITUTESDEMANDTOMAKETHERESEARCHERSUNDERSTANDTHE%GHLETESTPROCESSANDTHERESULTWHICHRELATETOTHERULEANDTHEESSENCEPROFOUNDLYSUCHASTHEGASFLOWRULEANDEACHKINDOFPARAMETERTOPERFORMTHEINFLUENCEOFTHEGASFLOWTHUS,THEMOREEFFECTIVETESTINGMETHODSWILLBEPROPOSED。THETESTVISUALIZATIONSYSTEMMAINLYPROCESSESTHEDATAAFTERTHEEXPERIMENTATIONWHICHREALIZESTHEAIRCRAFTENGINEPHYSICALMODELSTRUCTURECONFIGURATIONSPACEPOSITIONDISTRIBUTIONUSINGSOMEVISUALIZATIONWAYTHEMONITORINGVIDEORECORDINGDATASYNCHRONIZATIONPLAYBACKANDGRAPHICALDISPLAYTHEFLOWSURVEYSECTIONANIMATIONTWODIMENSIONALINFORMATIONTHETESTINGENVIRONMENTTESTFACILITYANDTESTSPLACE,ETCTHEMAINCONTROLPROGRAMISESTABLISHEDTEORGANIZEANDCHOICETHERAWDATAFROMTHEDATABASEWHICHISSENTTOTHEGRAPHICSMODULEANDTHERELATEDCOMMERCIALSOFTWAREACCORDINGTOTHEMISSIONREQUIREMENTTHEVISUALIZATIONSYSTEMMAYSATISFYTHEREQUIREMENTOFTHEENGINEANDTHEEXPERIMENTMODELSTRUCTURETHETESTPARAMETERCONFIGURATIONDATASYNCHRONIZATIONPLAYBACKOFTHEEXPERIMENTDATAFLOWANDTHEVIDEECORDINGTHESYSTE擻DESKSTUDIESPRELIMINARYMODELOFMULTIPLATFORMMUTUALCOOPERATIONUSINGTHEOBJECTORIENTEDMETHODKEYWORDSGASTURBINEENGINETESTVISUALIZATIONS,MODULEDESIGN,PARAMETERCONFIGURATION111
      下載積分: 5 賞幣
      上傳時間:2024-03-01
      頁數(shù): 73
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    • 簡介:分類號密級UDC編號工學碩士學位論文航空燃氣渦輪發(fā)動機葉片疲勞分析碩士研究生張海瓊指導教師宋海燕副教授學科、專業(yè)飛行器設計論文主審人蓋京波副教授哈爾濱工程大學2013年12月分類號密級UDC編號工學碩士學位論文航空燃氣渦輪發(fā)動機葉片疲勞分析碩士研究生碩士研究生張海瓊指導教師指導教師宋海燕副教授學位級別學位級別工學碩士學科、專業(yè)學科、專業(yè)飛行器設計所在單位所在單位航空與建筑學院論文提交日期論文提交日期2013年12月論文答辯日期論文答辯日期2014年03月學位授予單位學位授予單位哈爾濱工程大學
      下載積分: 5 賞幣
      上傳時間:2024-03-01
      頁數(shù): 73
      6人已閱讀
      ( 4 星級)
    • 簡介:自‰Y4JK一面醬宦予辯被蟲罄碩士學位論文題女目作者姓名學科門類提交論文日期航空全雙工以太網(wǎng)交換機若干關鍵技術研究與實現(xiàn)STUDYANDREALIZATIONOFSOMEKEYTECHNOLOGIESONAFDXSWITCH王斌文指導教師姓名、職務邱智亮教授工學學科、專業(yè)通信與信息系統(tǒng)二OO八年一月ABSTRACTBECAUSEOFTHESOLIDNETWORKFOUNDATIONANDTHELONGTERMACCUMULATIONOFTHEETHEMETRESEARCHEXPERIENCE,NOWADAYS,ETHEMETHASBECOMETHEMOSTPOPULARNETWORKINGPROTOCOLUSEDINLANSFORTHESPECIALDEMANDOFINDUSTRIALCONTROLLERSYSTEM,SUCHASONSITEENVIRONMENT,TOPOLOGYANDRELIABILITYWEMUSTMAKESOMEADJUSTMENTANDSUPPLEMENTONTHESTANDARDIEEE8023ETHERNETPROTOCOLTOENSUREITSRELIABILITYWHENUSEDINTHEAPPLICATIONSOFINDUSTRIALFIELD,THATISTHEOFTENSAYINGCALLEDINDUSTRIALETHERNETNOWADAYS,INTHEFIELDOFCOMMUNICATINGCONTROLLERNETWORK,THESOLUTIONSOFINDUSTRIALETHEMETHAVEBEENWIDELYRECOGNIZEDANDACCEPTEDHOWEVERITISUNDENIABLETHATWHENREFERRINGTOTHELOWESTLEVELOFFIELDWORKCONTROLLINGSYSTEMS,THISINDUSTRIALETHEMETTECHNOLOGYENCOUNTERSSOMEBLANKWALLSTHEPROBLEMSOFREALTIMEANDDETERMINISTICASANEWGENERATIONOFAIRCRAFTDATANETWORKADNSTANDARDS,ARINC664DEFINESANAVIONICSORIENTEDSCHEMETOAPPLYREALTIMEETHERNETWITHDETERMINISTICQUALITYOFSERVICEGUARANTEETHISSOLUTIONHASPASSEDAIRLINEELECTRONICENGINEERINGCOMMISSION’SDELIBERATIONANDHASAPROSPECTIVEDEVELOPMENTFUTUREANDGREATAPPLICATIONSPACEBOTHBOEINGANDAIRBUSHAVEEXPLOREDTHECOMMERCIALETHERNETTECHNOLOGYTOPUTITINTOUSEANDHAVEALREADYDEVELOPEDMATUREPRODUCTSFORTHEWESTERNCOUNTRIES’RESTRICTIONONHIGHTECHPRODUCTSTOCHINA,OURCOUNTRYHASNOTYETPROPOSEDAMATUREADNSOLUTIONPLANATPRESENTASTHESTARTUPOFTHE‘‘LARGEAIRCRAFT’’PROJECT,THEDEVELOPMENTOFCHINA’SAVIATIONINDUSTRYSTEPSINTOAFLOURISHINGPERIOD,INWHICHTODESIGNANEWGENERATIONADNEQUIPMENTWITHCHINA’SOWNINTELLECTUALPROPERTYRIGHTISASUREFOOTEDANDURGENTTASKWITHREFERENCETOTHERESEARCHPROJECT“DESIGNOFTHEAVIONICSFULLDUPLEXSWITCHEDETHERNETAFDXSWITCH”,WHICHOURLABORATORYISINCHARGEOFTHATISTODESIGNANDREALIZEANAFDXSWITCHANDSWITCHINGCORECHIPINACCORDANCEWITHTHEDEFINITIONOFPART7OFARINC664STANDARDSCALLED‘‘AIRCRAFTDATANETWORKPART7AVIONICSFULLDUPLEXSWITCHEDETHEMETAFDXNETWORK”THEAFDXSWITCHSHOULDHASTHEABILITYTOSUPPORTSIXTEEN100MBPSETHERNETPHYSICALPORTSTOREALIZEAFULLDUPLEXANDNONBLOCKINGPACKETSSWITCHINGINTHISDISSERTATION,F(xiàn)OURPARTSONTHESWITCHINGCOREARESTUDIED,INCLUDINGMEMORYANDQUEUEMANAGEMENTMODULE,SWITCHINGDATABUSMODULE,CAPTUREPORTMODULEANDTHESIMULATIONANDPERFORMANCEANALYSISOFTHEWHOLEAFDXNETWORKTHEMEMORYANDQUEUEMANAGEMENTMODULEPRESENTSAMETHODTOMANAGETHEPHYSICALMEMORYASSOMEQUEUELISTSFORAPACKET
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      上傳時間:2024-03-01
      頁數(shù): 70
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    • 簡介:電子科技大學碩士學位論文某型航空電子設備及安裝架動力學分析姓名陳施能申請學位級別碩士專業(yè)機械電子工程指導教師徐利梅20070101ABSTRACTABSTRACT處RBOMEELECTRONICEQUIPMENTSARETHEIMPORTANTPARTSOFTHEAIRCRAFTSYSTEM.THOSEEQUIPMENTSAREWORKEDINVIBRATIONANDIMPACTCONDITION.ACCORDINGTOAMERICANMILITARYSTATISTIC,VIBRATIONEFFECTISABOUT27%INRESULTINGFAILUREOFELECTRONICEQUIPMENTS.INORDERTOENHANCETHEAIRBORNEELECTRONICS’RELIABILITY,THECOMPREHENSIVEDYNAMICANALYSISOFTHEMISNECESSARY.THISTHESISTAKESONETYPEOFAIRBOMEELECTRONICEQUIPMENTASANEXAMPLE,DYNAMICANALYSISAREIMPLEMENTEDBASEDONFINITEELEMENTMETHOD.FIRSTLY,THEFINITEELEMENTMODELOFTHEAIRBOMEELECTRONICEQUIPMENTSWASESTABLISHED.THESTRUCTUREOFTHEAIRBORUEELECTRONICARESOPHISTICATED.THEYNOTONLYHAVEFRAMESTRUCTUREBUTALSOPRINTEDCIRCUITBOARD.FURTHERMORE,THETYPEOFCOMPONENTSISMULTITUDINOUSANDDISTRIBUTEDSITUATIONISCOMPLEX.THISTHESISANALYZESTHEKEYSTEPSINTHEFINITEELEMENTMODELINGPROCESS,ANDSTUDIESTHEMODELINGMETHODFORAIRBOMEELECTRONICEQUIPMENTS.FORTHEMODULELEVEL,DETAILMODELINGANDOBMMASSSMEARINGMETHODSAREUSEDTOESTABLISHFINITEELEMENTMODEL.FORMODELINGTHEFINITEELEMENTMODELOFEQUIPMENTLEVEL,GLOBALMASSSMEARINGMETHODISUSED.THEDYNAMICMODALANALYSISWASDONEBASEDONTHEFINITEELEMENTMETHOD.THENATUREDFREQUENCYANDMODESHAPEOFTHEEQUIPMENTASWELLASITSMODULEWEREOBTAINED.COMPAREDWITHTHATOFTHEEXPERIMENTTESTINGRESULT,THEFINITEDEMENTMODELSWEREMODIFIEDUNTILTHEYMATCHWITHTHATOFTHEEXPERIMENTEDTESTINGRESULT.FOLLOWEDBYTHEABOVEQUALIFIEDFINITEELEMENTMODELS,THERANDOMVIBRATIONANALYSISANDTRANSIENTANALYSISWEREDEALWITH.THEOBTAINEDINCLUDETHEACCELERATIONPOWERSPECTRALDENSITYOFSOMEKEYPOSITIONOFTHEELECTRONICEQUIPMENT,DISPLACEMENTNEPHOGRAM,ANDACCELERATIONRESPONSEOFSOMESENSITIVEANDCRITICALCOMPONENTS.THEDYNAMICCHARACTERISTICOFTHEAIRBORNEELECTRONICEQUIPMENTWASOBTAINED.THEBRACKETWHOSEFUNCTIONISFIXTUREANDSUPPORTISTHEINTERFACEBETWEENTHEELECTRONICSEQUIPMENTSANDAIRCRAFT.ACCORDINGTOTHECURRENTDESIGNDIMENSION,THEBRACKETISMODELEDBYFMITEELEMENTSOFTWARE,WHICHISVERIFICATIONBYTESTDATA.THEN,MODALANALYSISANDRANDOMVIBRATIONANALYSISARECARDEDOUT.ATLAST,THESHAPEANDⅡ
      下載積分: 5 賞幣
      上傳時間:2024-03-01
      頁數(shù): 69
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    • 簡介:中圖分類號V2337論文編號102870215S115學科分類號082502碩士學位論文航空發(fā)動機分布式控制時延系統(tǒng)穩(wěn)定性及魯棒控制方法研究研究生姓名高大偉學科、專業(yè)航空宇航推進理論與工程研究方向系統(tǒng)控制與仿真指導教師潘慕絢副教授南京航空航天大學研究生院能源與動力學院二О一四年十二月NANJINGUNIVERSITYOFAERONAUTICSASTRONAUTICSTHEGRADUATESCHOOLCOLLEGEOFENERGYPOWERENGINEERINGRESEARCHONTHESTABILITYROBUSTCONTROLMETHODOFDISTRIBUTEDTIMEDELAYSYSTEMOFAEROENGINEATHESISINAEROSPACEPROPULSIONTHEYENGINEERINGBYGAODAWEIADVISEDBYASSOCIATEPROFESSPANMUXUANSUBMITTEDINPARTIALFULFILLMENTOFTHEREQUIREMENTSFTHEDEGREEOFMASTEROFENGINEERINGDECEMBER2014
      下載積分: 5 賞幣
      上傳時間:2024-03-01
      頁數(shù): 78
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      上傳時間:2024-03-01
      頁數(shù): 61
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