簡(jiǎn)介：隨著我國(guó)航空工業(yè)的迅猛發(fā)展，復(fù)合材料的應(yīng)用日益增加，航空大型復(fù)材構(gòu)件作為大型飛機(jī)的主要承載部件，其生產(chǎn)以及裝配質(zhì)量直接決定飛機(jī)的服役性能。為實(shí)現(xiàn)復(fù)材構(gòu)件低損傷、高精度、高可靠性的生產(chǎn)以及連接裝配，需要對(duì)大型復(fù)材構(gòu)件的尺寸進(jìn)行高精度測(cè)量，因此研究針對(duì)航空構(gòu)件生產(chǎn)現(xiàn)場(chǎng)的快速高精度測(cè)量方法具有重要意義。雙目立體視覺(jué)是一種非接觸式高精度、高效率、高柔性的便捷測(cè)量方法，課題組提出了基于激光掃描與跟蹤儀拼接的大型構(gòu)件視覺(jué)測(cè)量方法，以實(shí)現(xiàn)對(duì)航空大型復(fù)材零部件的參數(shù)測(cè)量。在雙目立體視覺(jué)測(cè)量系統(tǒng)中，相機(jī)標(biāo)定作為首要環(huán)節(jié)，其全局標(biāo)定精度直接影響到最終的測(cè)量精度。本文從大型航空構(gòu)件測(cè)量現(xiàn)場(chǎng)視場(chǎng)大、畸變嚴(yán)重、環(huán)境復(fù)雜的難點(diǎn)入手，對(duì)大視場(chǎng)相機(jī)標(biāo)定技術(shù)開(kāi)展了研究工作，主要研究?jī)?nèi)容包括1對(duì)國(guó)內(nèi)外現(xiàn)有相機(jī)標(biāo)定方法進(jìn)行整理分析，針對(duì)相機(jī)大視場(chǎng)現(xiàn)場(chǎng)標(biāo)定問(wèn)題，提出了基于分區(qū)域參數(shù)分離求解的大視場(chǎng)雙目相機(jī)標(biāo)定方法，該方法利用參數(shù)分離標(biāo)定的思想，對(duì)測(cè)量空間進(jìn)行分區(qū)在靠近主點(diǎn)畸變較小的區(qū)域通過(guò)空間布點(diǎn)求解相機(jī)參數(shù)初值，在視場(chǎng)四角畸變較大位置設(shè)置共線約束求解畸變系數(shù)初值，以重投影誤差最小為目標(biāo)進(jìn)行參數(shù)整體優(yōu)化，通過(guò)單張照片快速實(shí)現(xiàn)大視場(chǎng)相機(jī)的全場(chǎng)標(biāo)定。2在標(biāo)定方法的基礎(chǔ)上，分析了標(biāo)定控制點(diǎn)結(jié)構(gòu)分布對(duì)標(biāo)定測(cè)量精度的影響因素，利用激光跟蹤儀以及視覺(jué)測(cè)量系統(tǒng)搭建了標(biāo)定控制場(chǎng)，采用實(shí)驗(yàn)歸納的方式定性分析了標(biāo)定控制點(diǎn)景深分布、數(shù)量以及像面分布對(duì)標(biāo)定測(cè)量精度的影響規(guī)律，從而指導(dǎo)標(biāo)定布局，提升標(biāo)定精度。3設(shè)計(jì)了一套適用于航空現(xiàn)場(chǎng)測(cè)量的便攜式空間立體標(biāo)定裝置，以碳化硅標(biāo)準(zhǔn)陶瓷球作為標(biāo)定的特征元素，并且根據(jù)標(biāo)準(zhǔn)球的圖像灰度分布結(jié)合等差梯度結(jié)構(gòu)提出了自動(dòng)快速匹配特征識(shí)別方法，便于配合標(biāo)定方法實(shí)現(xiàn)全場(chǎng)的快速標(biāo)定。4在上述研究基礎(chǔ)上，結(jié)合標(biāo)定裝置分別在實(shí)驗(yàn)室和航空構(gòu)件測(cè)量現(xiàn)場(chǎng)進(jìn)行了標(biāo)定精度驗(yàn)證實(shí)驗(yàn)。結(jié)果表明測(cè)量視場(chǎng)為20M15M，實(shí)驗(yàn)室環(huán)境下標(biāo)尺重建偏差均值為01147MM，現(xiàn)場(chǎng)環(huán)境下單點(diǎn)測(cè)量坐標(biāo)平均偏差為013MM，尤其在景深方向的測(cè)量平均偏差僅為01156MM，滿足航空現(xiàn)場(chǎng)測(cè)量的精度要求。

簡(jiǎn)介：西安電子科技大學(xué)學(xué)位論文獨(dú)創(chuàng)性或創(chuàng)新性聲明秉承學(xué)校嚴(yán)謹(jǐn)?shù)膶W(xué)風(fēng)和優(yōu)良的科學(xué)道德，本人聲明所呈交的論文是我個(gè)人在導(dǎo)師指導(dǎo)下進(jìn)行的研究工作及取得的研究成果。盡我所知，除了文中特別加以標(biāo)注和致謝中所羅列的內(nèi)容以外，論文中不包含其他人已經(jīng)發(fā)表或撰寫(xiě)過(guò)的研究成果；也不包含為獲得西安電子科技大學(xué)或其它教育機(jī)構(gòu)的學(xué)位或證書(shū)而使用過(guò)的材料。與我一同工作的同志對(duì)本研究所做的任何貢獻(xiàn)均已在論文中做了明確的說(shuō)明并表示了謝意。申請(qǐng)學(xué)位論文與資料若有不實(shí)之處，本人承擔(dān)一切的法律責(zé)任。本人簽名蘭逝日期迦蘭2』西安電子科技大學(xué)關(guān)于論文使用授權(quán)的說(shuō)明本人完全了解西安電子科技大學(xué)有關(guān)保留和使用學(xué)位論文的規(guī)定，即研究生在校攻讀學(xué)位期間論文工作的知識(shí)產(chǎn)權(quán)單位屬西安電子科技大學(xué)。學(xué)校有權(quán)保留送交論文的復(fù)印件，允許查閱和借閱論文；學(xué)校可以公布論文的全部或部分內(nèi)容，可以允許采用影印、縮印或其它復(fù)制手段保存論文。同時(shí)本人保證，畢業(yè)后結(jié)合學(xué)位論文研究課題再撰寫(xiě)的文章一律署名單位為西安電子科技大學(xué)。本人簽名至逝導(dǎo)師簽名牲日期趁絲2』技術(shù)；在ANSYSWORKBENCH中快速的模擬了國(guó)軍標(biāo)規(guī)定的隨機(jī)振動(dòng)環(huán)境和沖擊振動(dòng)環(huán)境；對(duì)縮減機(jī)箱模型進(jìn)行了模態(tài)分析、隨機(jī)振動(dòng)分析、沖擊響應(yīng)分析，獲得了結(jié)構(gòu)的固有特性及振動(dòng)響應(yīng)特性。經(jīng)過(guò)論證，發(fā)現(xiàn)分析結(jié)果與實(shí)際情況大致相符，從而表明本文的工作是有效的。關(guān)鍵詞有限元分析ANSYSWORKBENCH有限元建模模態(tài)分析隨機(jī)振動(dòng)分析沖擊振動(dòng)分析

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簡(jiǎn)介：南京航空航天大學(xué)碩士學(xué)位論文航空公司飛機(jī)恢復(fù)系統(tǒng)問(wèn)題初步研究姓名柏強(qiáng)申請(qǐng)學(xué)位級(jí)別碩士專業(yè)交通運(yùn)輸規(guī)劃與管理指導(dǎo)教師胡明華20060101航空公司飛機(jī)恢復(fù)問(wèn)題初步研究IIABSTRACTAIRLINESARECONSTANTLYFACEDWITHDISRUPTIONPROBLEMSANDCANNOTEXECUTETHEIRSCHEDULESASPLANNEDBECAUSEOFSEVEREWEATHERPATTERNS,UNEXPECTEDAIRCRAFTMECHANICALFAILURES,CONGESTIONATAIRPORTETCWHENADISRUPTIONOCCURS,THEAIRLINEHAVETORESCHEDULEFLIGHTLEGS,NEEDAPOLICYTODECIDEWHICHFLIGHTLEGSNEEDTOBEDELAYEDANDWHICHONESNEEDTOBECANCELLED,ANDREROUTETHEAIRCRAFTS,CREWS,ANDPASSENGERSTHISPAPERSUMMARIZEDTHESOLUTIONSCURRENTLYADOPTEDBYAIRLINESUNDERTHECIRCUMSTANCESOFINTERRUPTIONSAFTERFULLYMASTERINGTHECOREBUSINESSOFTHEMOSTIMPORTANTDEPARTMENTOFAIRLINESAOCAFTERWARDS,SEVERALEXISTINGMODELSOFAIRLINESRECOVERYWEREREVIEWEDANDTHEAIRLINESINTEGRATEDRECOVERYMODELWASINTRODUCEDINDETAILSTHEAIRCRAFTRECOVERYMODELWITHTHEINTENTIONOFMINIMIZINGAIRLINESOPERATINGCOSTWASRESEARCHEDINDEPTH,INCLUDINGESTABLISHMENTOFTHEMODELANDTHECORRESPONDINGALGORITHMTHESOLUTIONTOTHEAIRCRAFTRECOVERYPROBLEMWASPROPOSEDANDAHEURISTICALGORITHMWASPUTFORWARDTOENGAGECERTAINAIRCRAFTSINTHEREROUTINGCALCULATIONACCORDINGTOTHEDIFFERENTKINDSOFINTERRUPTIONSFINALLY,BASEDONTHEABOVEAIRCRAFTRECOVERYSOLUTION,ADECISIONSUPPORTTOOLOFAIRCRAFTRECOVERYWASDEVELOPEDBYUTILIZINGOFCOMPUTERDEVELOPINGTOOLS,WHICHONTHEOTHERHANDVERIFIEDTHEAIRCRAFTRECOVERYMODELKEYWORDSAIRLINEIRREGULAROPERATION,AIRLINERECOVERYPROBLEM,AIRCRAFTRECOVERY,OPTIMIZATIONMODEL

簡(jiǎn)介：中圖分類(lèi)號(hào)V214論文編號(hào)102870113S049學(xué)科分類(lèi)號(hào)080104碩士學(xué)位論文航空結(jié)構(gòu)關(guān)鍵部位損傷識(shí)別方法研究研究生姓名金培學(xué)科、專業(yè)工程力學(xué)研究方向結(jié)構(gòu)健康監(jiān)測(cè)指導(dǎo)教師周麗教授南京航空航天大學(xué)研究生院航空宇航學(xué)院二○一三年三月NANJINGUNIVERSITYOFAERONAUTICSANDASTRONAUTICSTHEGRADUATESCHOOLCOLLEGEOFAEROSPACEENGINEERINGRESEARCHONDAMAGEDETECTIONMETHODSFORAEROSPACESTRUCTURALHOTSPOTSATHESISINENGINEERINGMECHANICSBYJINPEIADVISEDBYPROFZHOULISUBMITTEDINPARTIALFULFILLMENTOFTHEREQUIREMENTSFORTHEDEGREEOFMASTEROFENGINEERINGDECEMBER,2012

簡(jiǎn)介：分類(lèi)弓V23題目學(xué)佼代碼10699研究生學(xué)號(hào)046076382西北工業(yè)大學(xué)碩士學(xué)位論文學(xué)位研究生作者趔D態(tài)學(xué)科專業(yè)控劍堡途皇控劍工猩指導(dǎo)教師楚工2007年3月西北工業(yè)大學(xué)碩士學(xué)位論文英文摘要ABSTRACTTHEHI咖DUTY觚LCOOLEDOILTESTBEDISANIMPONARLTEQUIPMENTFORTLI舟D啊MELCOOLEDOILCOOLERTOBEIILSPECTEDANDRESEARCHEDINORDERTOI11SDECTCOOLERMORCQUICKLYAILDSAFCLY，ANDALSOIMPROVCCOQORATION’SECONOMICBENE矗TS，N，SNECESSAN，TODESIGNMELLI曲DUTY如E1COOLEDOILTESTBEDTILATCON打01WITHTHCCOM口UTERFIRSTLY’THISPAPERIN仃ODUCESMEDEVELOPMENTOFCOMPUTERCON仃OLTHEORY徹DT11ETESTINGPROCESSOFLLIGHDMY如ELCOOLEDOILCOOLERACCORDINGTOTHEREQUESTFORTESTING，MESCHEMEOFTESTBEDISPRESENTSECONDLY，BASEDONTHE鋤LYSISOFSYSTEM’SJ1ARD啪RE，NLEP印ER丘NISHEDT王LEDESIGLLOFTHISSYSTEM’SHARD呲AILDAISOSEIEC倒APP跏CUSTHJRDLY，HOWTODES咖111IS螂BED’SSORWAREARCINTRODUCEDFINALLY，APIDCONTROLLERFORTEMPERATUREISDESIGNED觚DSIMUIATEDASTILDYONYSTEMCOMMISSIONINGISPRESEMEDATJASTIN協(xié)EANICLETHEPRACTICALSHOWSTHATTHESYSTCMDESIGNISFCASIBLEAILDREACHESTTLEREQUIREMENTSPRESET【KEYWORD】HIGHDUTY舭LCOOLEDOILC00IERVISUALB∞ICTESLBEDCOMPUTERC0NTROLDALAB船EN

簡(jiǎn)介：西北工業(yè)大學(xué)碩士學(xué)位論文光纖通道在航空計(jì)算領(lǐng)域的研究和應(yīng)用姓名宋少峰申請(qǐng)學(xué)位級(jí)別碩士專業(yè)計(jì)算機(jī)科學(xué)與技術(shù)指導(dǎo)教師張延園20070301ABSTRACTW汕T11EDEVELOPMENTOFAVIOTRONICS，WENEEDHI曲ERDATA一柵1SMITSPEEDINAYIONICSCOMPUTEFIELDATT11ES鋤ETIME，AGRCATDEALDATASHOLLLDBETRANSMINEDAMONGONBOARDELECTRONICSEQUIPMENTINCOMPLEXNETWORKENVIRONMENT；BOWEVER，TRADITIONALONBOARDNETWORKSYSTEMCAILNOTAFRORDTHATNEWMATERIALANDPROTOCOLARENEEDEDDATACANBCT啪SMITCEDAT齜SPEEDOFGB№INFIBRE礬ATISMORE，F(xiàn)IBRCHASTHEABIL畸OFANTIJ鋤MINGA11DBITEHDRRATELLLLDER10叫2，W11ICHPROVIDESHI曲RELIABILITY10WLATENCY，“GHISPEEDCOMMUNICATIONSOLUTIONT11ISPAPERIN打ODUCESTHEDEVELOPMENTHISTORYOFAVIOILICSNE柳OTI【INGTECLLILOLOGY，∞SEARCHESFIBRECHANNELTECHNOLOGY’DISCUSSESUPPERM印PINGPROTOCOLOFFIBRECHANNELIN耐ONICSENVIROMENT，ANDPROPOSESAILIMPLEMENTEDMC也ODOFFCLP助RECHANNEL1IGHT、ⅣEIGHTPMTOC01BECAUSEOFTHEREQUIREMEMFORHI曲RELIABILI饑LOWLATENCYANDHI曲SPEEDINAVIONJCSENVIRONMENT，WESIMPIIFIEDSCSICO咖ANDSA11DREDUCETHEHEADEROFDATA矗跏ETHETRAILSMITSPEEDISIINPROVEDTHEN，THEPAPERPROPOSEST11EDESIGLLANDHPLEMEMAT王ONOFTASKN1卸AG鋤EMWEDESIGNTLLREEQUEUESTOMANAGEDI臟RCNTTASKS，W11ICHWILLENSURCEVERYTASK1111DERCONTR01PRIORITYMECHANISMANDMILLISECONDOVEMMESYSTEMARCADOPTEDTOENSURERCALTIⅡLEP髓FBRNLANCEWEUSEDI恐REMPRIORITIESTODIS廿NGUISHTHEIINPORTANCEOFDI彘RENTDATA，AND“CTOVENIMESYSTEMTOENSLLRETASKSTOBEFINISHEDINSPECIFICALLYPERIODMEALL、，HILE，MTLLTISTATECHANNEL，INTE舒ATEDS詛1【ETRANSITIONPLALLATLDSYNCHRONOUS／ASYNCHRONOUSMODELAREDESI911EDTOIMPROVERCLIABILI可ANDNEXIBILI夠FINALLY，WETESTTHESYSTEM’SRELIA_BILITYANDCOMMUNICATIONPERFBRMANCEARERALONGTIMETEST，TLLERESULTSHOWSTLLATMESYSTEMMEETSRCQLLIREMENTSOFAVIONICSENVIM工LIILENTBO血INREALTIMEANDRELIABILITYFCLPSYSTEMISIMPORTAMTESEARCHNEXTGENERATIONA、，IONICSCOMMUNICATIONSYSTEMKEYWORDSAVIONICS，F(xiàn)C，F(xiàn)CLP，EMBEDDED，REALTIME，RELIABILITYII

簡(jiǎn)介：匠兩L⑧目MR镕一M★天洋大尊TIANJLNUNVERSITY碩士學(xué)位論文學(xué)科專業(yè)絲蘭王莖作者姓名型盍擅指導(dǎo)教師苤擔(dān)盎塾撞天津大學(xué)研究生院2006年1月ABSTRACTCFITICFLTEMPERATURESANDPRESSURESOFFUELSAREIMPORTANTPARAMETERSFURRATINGOFMERITWHICHDEFINETHEPHASEBEHAVIORS，PERFORMANCEANDTEMPERATURERANGEOFFUELSAPPLIEDINTHEAIRPLANESANDHYPERSONICAIRCRAFTSINADDITIONTHEYAREVERYUSEFULINTHEINVESTIGATIONOFTHETHERMALDEGRADATIONORAGGREGATIONANDCARBONDEPOSITUNDERSUBSUPERERITICALCONDITIONSOFFUELSITISGENERALLYDIFFICULTTOMEASURETHECRITICALDATAOFFUELSDUETOITSCOMPLEXCOMPOSITIONUNSTABLEFEATURESANDHIGHERCRITICALVALUESINTHISTHESIS，VARIOUSEXPERIMENTALMETHODSANDTHEORYTODETERMINECRITICALPROPERTIESOFSUBSTANCEWEREINTRODUCEDONELOWRESIDENCETIMEFLOWEQUIPMENTFORTHEMEAGUREMEMOFTHECRITICALTEMPERATURESANDPRESSURESOFTHERMALUNSTABLEFLUIDSWAGDESIGNEDITIMPROVEDTHEORGMALMETHODSANDENLARGEDTHERANGEOFTEMPERATURESANDPRESSURESMEAGUREZL_，WITLLTHETESTEDTEMPERATUREAS0500。CANDTESTEXLPRESSURE雒05MPNPENTANE、NHEXANE、CYCLOHEXANEANDNDECANEWEREUSED嬲STANDARDREAGENTSTOCHEEKTHERELIABILITYOFTHEAPPARATUSTHEMAXIMUMDEVIATIONOFTEMPERATUREANDPRESSURESARE028。CANDO006MPARESPECTIVELYTHESERESULTSFULLYPROVETHATTHEAPPARATUSISRELIABLETODETERMINETHECRITICALDATAOFTHERMALUNSTABLEFLMDSTHECRITICALTEMPERATURESANDPRESSURESOFTWOENDOTHERMICHYDROCARBONFUELSRP3ANDSIMULATEJP7，ONEHIGLLENERGYFUELSJP10ANDMIXTURESOFJPLOWI也METHYLEYCLOHEXANEMC聊WEREDETERMINEDFORTHEFIRSTTIMEINADDITIONTHECRITICALDATAOFENDOTHERMIEAVIATIONFUELSOFRP3ANDSIMULATEJP7WEREESTIMATEDUSING6METHODSTHETEMPERATUREDEVIATIONWAGLESSTHAN6630C，ANDTHEPRESSUREDEVIATIONSAMONGESTIMATEDMETHODSHOWEVERCALLBEASMUCH硒O828MPATHEMAXILNUNLRELATIVEERTOROFTEMPERATURESANDPRESSURESWERE167％AND384％，RESPECTIVELYTHEAPIMETHODS，ANDRIAZIANDDANBERTCORRELATIONARERELATIVELYRELIABLEANEWMETHODTODETERMINETHECRITICALDATAUSINGHIGHPRESSUREDIFFERENTIALSCANNINGCALORIMETRYWAGPROPOSED，WHICHCANINFERREDTHECRITICALTEMPERATURESANDPRESSURESFROMVARIOUSDSCCURVESUNDERDIFFERENCESMEASURINGPRESSURETHECRITICALDATAOFNPENTANEANDJP10WEREOBTAINEDFROMTHISMETHOD，THERESULTSWERE19760CAND337MPA4238。CAND360MP丑RESPECTIVELYTHERESULTSWEREINGOODAGREEMEMWITHTHEPUBLISHEDDATAINDICATINGTHATTHISMETHODISRELIABLEINPRACTICAL

簡(jiǎn)介：南京航空航天大學(xué)碩士學(xué)位論文航空發(fā)動(dòng)機(jī)混疊振動(dòng)信號(hào)的盲源分離研究姓名陽(yáng)平申請(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)教師李舜酩20080101航空發(fā)動(dòng)機(jī)混疊振動(dòng)信號(hào)的盲源分離研究IIABSTRACTMODERNSIGNALPROCESSINGMETHODSCAN’TSEPARATETHECOMPLICATEDMULTIMIXEDVIBRATIONSIGNALSEFFECTIVELYWITHOUTANYPREINFMATIONASONEOFTHEHOTTESTMOSTEXCITINGTOPICSINTHEFIELDSOFSIGNALPROCESSINGATPRESENTBLINDSOURCESEPATIONBSSISPAIEDATTENTIONFSOLVINGTHISPROBLEMBUTTHERESEARCHESAREMOSTLYABOUTTHETHEYSIMULATIONLITTLEININTHEREALSIGNALAPPLICATIONTHEMAJWKOFTHISPAPERISTORESEARCHTHEEXISTINGMETHODSOFBSSTHENGETSOMEIMPROVEDMETHODSFITTEDFSEPARATINGTHEVIBRATIONSIGNALSWHICHWILLPROVIDEANEWWAYFTHESTATESTIRINGDIAGNOSISOFAIRCRAFTENGINESTHESPECIFICWKASFLOWERING1ANALYSEDEXPLAINEDTHEINDEPENDENTCOMPONENTANALYSISICATHEYALGITHMINDETAILGAVETHECLASSOFCEFUNCTIONAWAYOFITSION2PROPOSEDANIMPROVEDALGITHMCALLEDICAWITHREFERENCEICARWHICHISCOMBINEDWITHACTERSOFTHEVIBRATIONSIGNALTOPURSUITTHEEXPECTEDONETHROUGHSIMULATIONANALYSISTHISTECHNIQUEHASNOTONLYMESEPARATINGPRECISIONBUTALSOFASTERCONVERGENCETHANTRADITIONALMETHODS3ANALYSEDSTSOFVIBRATIONEXPERIMENTSUSINGBSSACHIEVEDSOMEAVAILABLECONCLUSIONSADAPTIVEMETHODSWHICHWASSUCCESSFULTOCONFIRMTHEVALIDITYOFBSSAPPLIEDTOSEPARATINGVIBRATIONSIGNAL4ABSSPACKAGEUSINGMATLABVCSOFTWARESWASDESIGNEDBASEDONTHETHEYOFSETTINGPARAMETERSTHISPACKAGEMADETHEOPERATIONOFBSSSIMULATIONSAPPLICATIONSCONVENIENTLYUNDERAGRAPHICALINTERFACESCONTROLKEYWDSBLINDSOURCESEPARATIONBSSVIBRATIONSIGNALCEFUNCTIONINDEPENDENTCOMPONENTANALYSISWITHREFERENCEICARBSSPACKAGE

簡(jiǎn)介：分類(lèi)號(hào)密級(jí)UDC編號(hào)專業(yè)碩士學(xué)位論文（工程碩士）航空用可快拆蜂窩夾層艙門(mén)強(qiáng)度等效模型研究碩士研究生劉祥指導(dǎo)教師陳東良副教授企業(yè)導(dǎo)師季寶鋒工程師工程領(lǐng)域機(jī)械工程論文主審人王茁教授哈爾濱工程大學(xué)2014年5月分類(lèi)號(hào)密級(jí)UDC編號(hào)專業(yè)碩士學(xué)位論文（工程碩士）航空用可快拆蜂窩夾層艙門(mén)強(qiáng)度等效模型研究碩士研究生碩士研究生劉祥指導(dǎo)教師指導(dǎo)教師陳東良副教授學(xué)位級(jí)別學(xué)位級(jí)別工程碩士工程領(lǐng)域工程領(lǐng)域機(jī)械工程所在單位所在單位機(jī)電工程學(xué)院論文提交日期論文提交日期2014年5月論文答辯日期論文答辯日期2014年6月學(xué)位授予單位學(xué)位授予單位哈爾濱工程大學(xué)

簡(jiǎn)介：上海交通大學(xué)碩士學(xué)位論文航空發(fā)動(dòng)機(jī)變比熱容熱力計(jì)算和系統(tǒng)級(jí)仿真研究姓名韋福申請(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)教師杜朝輝20060201上海交通大學(xué)碩士論文摘要II和組分燃?xì)獾膹?fù)雜函數(shù)其中壓力對(duì)比熱容的影響很小氣體經(jīng)過(guò)燃燒室和燃油混合燃燒后生成的燃?xì)庥啥喾N不同性質(zhì)的物質(zhì)組成而且隨著余氣系數(shù)不同其成分及比例不同物性也不一樣如果都考慮每種氣體的比熱容就會(huì)給計(jì)算帶來(lái)困難為了計(jì)算方便將系統(tǒng)的工質(zhì)分為空氣和純?nèi)細(xì)庥扇剂吓c理論空氣量完全燃燒而成的的混合分別考慮他們的比熱容如果是燃燒室前的模塊比如進(jìn)氣道壓氣機(jī)等可把其工質(zhì)看成燃?xì)鉃榱愕幕旌蠚怏w純空氣一般的比熱容是按照空氣和純?nèi)細(xì)獾谋葻崛莞鶕?jù)質(zhì)量分?jǐn)?shù)關(guān)系線性組合而成的然后對(duì)每一模塊建立變比熱容的數(shù)學(xué)計(jì)算模型同時(shí)以單軸渦輪噴氣式發(fā)動(dòng)機(jī)為算例進(jìn)行計(jì)算仿真跟用軟件GASTURB和定比熱計(jì)算的結(jié)果相比較證明變比熱的計(jì)算結(jié)果合理性和更接近物理實(shí)際以及有推廣應(yīng)用的價(jià)值最后利用已有的模塊庫(kù)對(duì)常見(jiàn)的發(fā)動(dòng)機(jī)系統(tǒng)比如渦輪噴氣渦輪軸渦輪螺漿渦輪風(fēng)扇等進(jìn)行系統(tǒng)建模仿真并對(duì)它們進(jìn)行設(shè)計(jì)點(diǎn)和非設(shè)計(jì)點(diǎn)的熱力計(jì)算非設(shè)計(jì)點(diǎn)仿真計(jì)算包括速度特性高度特性和節(jié)流特性的計(jì)算還有過(guò)渡工作狀態(tài)比如啟動(dòng)加速減速接通加力與斷開(kāi)加力等仿真從計(jì)算結(jié)果的分析和與GASTURB的計(jì)算相比較中可以看出利用MODELICADYMOLA進(jìn)行建模仿真的方法具有有效性通用性合理性可行性和便捷性等關(guān)鍵詞航空發(fā)動(dòng)機(jī)模塊化建模變比熱容仿真DYMOLAMODELICA

簡(jiǎn)介：南京航空航天大學(xué)碩士學(xué)位論文XRF和顯微圖像技術(shù)在航空發(fā)動(dòng)機(jī)智能監(jiān)測(cè)中的綜合應(yīng)用姓名羅鋒申請(qǐng)學(xué)位級(jí)別碩士專業(yè)載運(yùn)工具運(yùn)用工程指導(dǎo)教師李艷軍20090101XRF和顯微圖像技術(shù)在航空發(fā)動(dòng)機(jī)智能監(jiān)測(cè)中的綜合應(yīng)用IIABSTRACTAEROENGINESUPPLIESTHEMAJORMOTIVEPOWERTOTHEMODERNAIRCRAFT,SOTHESTATUSINSPECTIONOFTHEAEROENGINEOPERATIONPLAYSUNDOUBTEDLYANIMPORTANTROLEACCORDINGTODIFFERENTOBJECTS,THECONCLUSIONOFFUSEINGSEVERALDIFFERENTMONITORINGMEANSISMOREACCURATELYTHISPAPERBEASEDONXRFXRAYFLUORESCENCETECHNOLOGYANDINTRODUCINGARTIFICIALNEURALNETWORK,GRAYSYSTEMTHEORY,PROBABILITYSTATISTICS,DEMPSTERSHAFEREVIDENTIALTHEORYANDOTHERINTELLIGENTCALCULATION，INORDERTODEVELOPAINTELLIGENTMONITORINGSYSTEMXRFXRAYFLUORESCENCETECHNOLOGY,USINGISOTOPERADIOACTIVESOURCESTOERADIATEMATERIALSWHICHTOBEMEASURED,PRODUCESENERGYSPECTRUMTHROUGHASERIESOFINSTALLATIONS,WHICHISUSEDTODETERMINETHEELEMENTALMATERIALCATEGORIESMICROSCOPICIMAGETECHNIQUEWHICHWITHTHEFUNCTIONSOFPARTICLECOUNTERANDFERROGRAPH,ACHIEVEDTHEDIAGNOSISONTHEAEROENGINEWEARFAULTSBYUSEINGMCROSCOPICOPTICALIMAGINGSYSTEMANDDIGITALIMAGEPROCESSINGMETHODTHERESEARCHWORKMAINLYINCLUDESTHEFOLLOWINGTHREEASPECTSFIRSTLY,PROCESSEDXRFENERGYSPECTRUMANDOUTPUTTEDTHEELEMENTCONCENTRATIONSRESEARCHEDTHEMETHORDOFCALCULATINGTHETHRESHOLDVALUEOFTHECONCENTRATIONOFTHEWEARDEBRISANDFORECASTEDTHEWEARFAULTBYGREYPREDICTIONSECONDLY,BASEDONTHENUMBERANDPARAMETERSOFWEARDEBRIS,FUSINGTHERADIALBASEDFUNCTIONRBFNEURALNETWORK,BACKPROPAGATIONBPNEURALNETWORKANDGREYRELATIONALANALYSISMETHODS,IMPROVINGTHEACCURACYRATEOFDEBRISAUTORECOGNITIONBASEDONTHECOLLECTEDINFORMATIONOFTHEDEBRISCONFIGURATIONCHARACTERISTICSANDCONDUCTINGTHEDIAGNOSISONTHEAEROENGINEWEARFAULTSACCORDINGTOTHERECOGNITIONFINALLY,ASYNTHETICINTELLIGENTDIAGNOSISMODELBYDATAFUSIONFAULTDIAGNOSISMETHODBASEDONABOVEDIAGNOSISMETHODWASPUTFORWARD,ANINTELLIGENTMONITORINGSOFTWARESYSTEMOFAEROENGINEISDEVELOPEDBASEDONTHEABOVERESEARCHKEYWORDSAEROENGINE,WEAR,XRF,DEBRISANALYSIS,INFORMATIONFUSION,INTELLIGENTANALYSIS

簡(jiǎn)介：分類(lèi)號(hào)UDCY1043656學(xué)位論文題目航空發(fā)動(dòng)機(jī)主燃燒室CFD的工程適用性研究研究生姓名于芳學(xué)科專業(yè)名稱航空宇航推進(jìn)理論與工程研究方向航空發(fā)動(dòng)機(jī)燃燒設(shè)計(jì)與分析技術(shù)申請(qǐng)學(xué)位碩士指導(dǎo)教師姓名徐讓書(shū)指導(dǎo)教師職稱教授指導(dǎo)教師單位沈陽(yáng)航空工業(yè)學(xué)院論文提交日期2007年01月LO日論文答辯日期2007年01月20日學(xué)位授予日期2007年月日答辯委員會(huì)主席綴教授／評(píng)閱人承勰睇嚏助弓FC宕濃教瞧沈陽(yáng)航空工業(yè)學(xué)院2007年1月沈陽(yáng)航空工業(yè)學(xué)院頓十學(xué)位淪文ABSTRAETENGINEERINGAPPLICABILITYOFAEROENGINECOMBUSTORCFDHASBEENRESEARCHEDANDVERIFIEDWITHACERTAINENGINECOMBUSTORASTHEPROTOTYPETHEGOALISTOVERIFYANDVALIDATETHEENGINEERINGAPPLICABILITYOFNUMERICALCALCULATIONMETHODANDVARIOUSPHYSICALMODEISINTHEAEROENGINECOMBUSTORCFDTHISPAPERBRIEFLYDESCRIBESTHESTATUSANDDEVELOPMENTOFCOMBUSTORCFDENGINEERINGAPPLICABILITYWITHDEEPLYINVESTIGATIONATHOMEANDABROADTHEWORKPROGRESSOFTHEAEROENGINECOMBUSTORANDTHEORYOFMULTIDISCIPLINARYCFDISGIVENINDETAIL，ANDTHENTHERESEARCHPROJECTISPUTFORWORDANDNUMERICALMODELSAREBUILTTHESOLUTIONDOMAINOFTHEPROBLEMISDELIMITEDANDSIMPLIFIEDINTHESIMULATION，F(xiàn)ILMCOOLINGHOLEROWSISSUBSTITUTEDWITHSLOTSFILLEDWITHPOROUSMEDIATOSIMPLIFYTHEGEOMETRYOFTHECOMBUSTOR；THESOLUTIONDOMAINISMESHEDWITHMANUALHEXAHEDRONCOREMETHODTHESIMULATIONCHOOSESREAL拓ABLEKETURBULENCEMODEL，PRESSURESWIRLATOMIZERMODE、ANDNONPREMIXEDCOMBUSTIONMODE、TOSIMULATETHETURBULENTFLOW，F(xiàn)UELSPRAYANDTURBULENTCOMBUSTION；THERELATIONSOFMATERIALTHERMOLPROPERTIESWITLLTEMPERATUREAREFITTEDUSINGATEMPERATUREDEPENDENTFUNCTIONTHEGOVERNINGEQUATIONSARESOLVEDUSINGCOMMERCIALCFDSOFTWAREONAHIGHPERFORMANCECOMPUTERCLUSTERHPCCWITHPARALLELPROCESSINGANDHIGHORDERDESCRETIZATIONSCHEME，THENUMERICALSOLUTIONOFFLOW，F(xiàn)UELSPRAYANDTOWPHASEFLOWANDCOMBUSTIONINTHECOMBUSTORHAVEBEENOBTAINEDTHEENGINEERINGAPPLICABILITYOFTHEAEROENGINCCOMBUSTORCFDISDISCUSSEDBYANALYZINGTHESOLUTIONANDCOMPARINGWITHEXPERIMENTALDATATHERESULTSINDICATETHATTHECALCULATIONISREASONABLEANDSATISFIESTHEREQUIREMENTOFENGINEERINGTHISPAPERVALIDATESTHEENGINEERINGAPPLICABILITYOFTHECOMBUSTORNUMERICALSIMULATIONANDALSOPOINTSOUTTHEPROBLEMOFTHECOMBUSTORMODELTHATNEEDSTOBEIMPROVED，THECONCLUSIONISMEANINGFULFORCOMBUSTORDESIGNANDRESEARCHKEYWORDSCFD；AIROENGINECOMBUSTOR；ENGINEERINGAPPLICABILITY；SPRAY；COMBUSTION

簡(jiǎn)介：中國(guó)民用航空學(xué)院碩士學(xué)位論文多航空器沖突檢測(cè)與優(yōu)化解脫研究姓名劉煜堃申請(qǐng)學(xué)位級(jí)別碩士專業(yè)交通運(yùn)輸規(guī)劃與管理指導(dǎo)教師徐肖豪聶潤(rùn)兔20060426

簡(jiǎn)介：天津大學(xué)碩士學(xué)位論文基于航空照相槍的飛機(jī)姿態(tài)測(cè)量姓名汪偉申請(qǐng)學(xué)位級(jí)別碩士專業(yè)測(cè)試計(jì)量技術(shù)及儀器指導(dǎo)教師王向軍20070101ABSTRACTAIRBORNEFIRECONTROLCAMERAGUNISAKINDOFPHOTOGRAPHICANDRECORDINGEQUIPMENTADOPTEDGENERALLYONTHEFIGHTERPLANEITISOFTENINSTALLEDONTHEAIRFOIL，AIRCRAFTNOSEANDCOCKPITWHENFIREBUTTONISPRESSED，CAMERAGUNTAKESPHOTOSOFTARGETALONEORTOGETHERWITHGUNSYSTEMTHEEFFECTOFTRAININGORCOMBATCANBECHECKEDBYWHATCAMERAGUNSHOTATPRESENTTRADITIONALFILMCAMERAGUNHASBEENMOSTWIDELYUSEDONTHEFIGHTERPLANEFILMCAMERAGUNCANNOTSATISFYTHEFLIGHTTRAININGPURPOSEASARESULTOFSOMEDISADVANTAGESOFFILM，SUCHASHIGHCOSTLOWACCURACYANDWHICHISHARDTOSAVETHEIMAGEWHICHISCOLLECTEDBYCAMERAGUNSHOULDBEINTERPRETEDANDANALYZEDWHENTHEFLIGHTTRAININGISFINISHEDTHEREARETWOKINDSOFINTERPRETATIONMETHODBYUSINGFILMCAMERAGUNWHENTHEFLIGHTTRAININGISFINISHEDONEISEMPIRICALINTERPRETATION，THEOTHERISMANUALINTERPRETATIONEMPIRICALINTERPRETATIONCALLWORKEFFECTIVELYWHENTHESHOOTINGDISTANCEISSHORTANDAIRMANMUSTHAVERICHEXPERIENCECOMPAREDWITHTHEEMPIRICALINTERPRETATIONMANUALINTERPRETATIONISOFSOMEACCURACYBUTTHISMETHODISCOMPLEXWHICHNEEDADJUSTMAGNIFICATIONOFIMAGEANDSELECTDIFFERENTINTERPRETATIONACCORDINGTODIFFERENTFIREKINDSITISNECESSARYTOIMPROVETHETRADITIONALFILMCAMERAGUNANDINTERPRETATIONMETHODWITHTHEIMPROVEMENTOFARMYEQUIPMENTANDTHEPROGRESSOFTRAININGREQUIREMENTSTHISPAPERUSESDIGITALEQUIPMENTTORECORDFIRINGEFFECTTHEDESIGNWHICHISCOMPOSEDOFCMOSIMAGINGSENSORUSINGFORIMAGINGCHIP，HIGHCAPACITYFLASHUSINGFORDATAMEMORYANDCPLDUSINGFORCONTROLUNITCANREPLACEFILMCAMERAGUNUSBDATASWITCHISDESIGNEDINORDERTOTRANSFERDATAWHICHISCOLLECTEDBYDIGITALCAMERAGUNTOPCATTITUDEANGLECANBECALCULATEDBYIMAGEANALYSISANDSPECIFICALGORITHMFIRSTOFALL，ASERIESOFIMAGESPREPROCESSINGTECHNIQUESWASTAKENTOEXTRACTTHEPRECISEEDGEOFTARGETIMAGETHEFOURCHARACTERISTICPOINTSOFTHEAIRCRAFTAREEXTRACTEDAFTERIDENTIFYINGTARGETPROFILEANDTHEKEYPOINTCANALSOBEOBTAINEDTHEMEASUREMENTPRINCIPLESANDMETHODOFAIRCRAFTATTITUDEANGLEBASEDONASINGLEIMAGEPLANEISRESEARCHEDBYUSINGPINHOLEPROJECTIONMODELBASEDONTHEKNOWNPARAMETERSINFORMATIONOFTHEAIRCRAFTANDOPTICALSYSTEMSINFORMATION，AIRCRAFT