簡介：隨著我國航空工業(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)件作為大型飛機的主要承載部件，其生產(chǎn)以及裝配質(zhì)量直接決定飛機的服役性能。為實現(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，需要對大型復(fù)材構(gòu)件的尺寸進行高精度測量，因此研究針對航空構(gòu)件生產(chǎn)現(xiàn)場的快速高精度測量方法具有重要意義。雙目立體視覺是一種非接觸式高精度、高效率、高柔性的便捷測量方法，課題組提出了基于激光掃描與跟蹤儀拼接的大型構(gòu)件視覺測量方法，以實現(xiàn)對航空大型復(fù)材零部件的參數(shù)測量。在雙目立體視覺測量系統(tǒng)中，相機標(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量精度。本文從大型航空構(gòu)件測量現(xiàn)場視場大、畸變嚴(yán)重、環(huán)境復(fù)雜的難點入手，對大視場相機標(biāo)定技術(shù)開展了研究工作，主要研究內(nèi)容包括1對國內(nèi)外現(xiàn)有相機標(biāo)定方法進行整理分析，針對相機大視場現(xiàn)場標(biāo)定問題，提出了基于分區(qū)域參數(shù)分離求解的大視場雙目相機標(biāo)定方法，該方法利用參數(shù)分離標(biāo)定的思想，對測量空間進行分區(qū)在靠近主點畸變較小的區(qū)域通過空間布點求解相機參數(shù)初值，在視場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)進行參數(shù)整體優(yōu)化，通過單張照片快速實現(xiàn)大視場相機的全場標(biāo)定。2在標(biāo)定方法的基礎(chǔ)上，分析了標(biāo)定控制點結(jié)構(gòu)分布對標(biāo)定測量精度的影響因素，利用激光跟蹤儀以及視覺測量系統(tǒng)搭建了標(biāo)定控制場，采用實驗歸納的方式定性分析了標(biāo)定控制點景深分布、數(shù)量以及像面分布對標(biāo)定測量精度的影響規(guī)律，從而指導(dǎo)標(biāo)定布局，提升標(biāo)定精度。3設(shè)計了一套適用于航空現(xiàn)場測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)提出了自動快速匹配特征識別方法，便于配合標(biāo)定方法實現(xiàn)全場的快速標(biāo)定。4在上述研究基礎(chǔ)上，結(jié)合標(biāo)定裝置分別在實驗室和航空構(gòu)件測量現(xiàn)場進行了標(biāo)定精度驗證實驗。結(jié)果表明測量視場為20M15M，實驗室環(huán)境下標(biāo)尺重建偏差均值為01147MM，現(xiàn)場環(huán)境下單點測量坐標(biāo)平均偏差為013MM，尤其在景深方向的測量平均偏差僅為01156MM，滿足航空現(xiàn)場測量的精度要求。

簡介：西安電子科技大學(xué)學(xué)位論文獨創(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人在導(dǎo)師指導(dǎo)下進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)表或撰寫過的研究成果；也不包含為獲得西安電子科技大學(xué)或其它教育機構(gòu)的學(xué)位或證書而使用過的材料。與我一同工作的同志對本研究所做的任何貢獻(xiàn)均已在論文中做了明確的說明并表示了謝意。申請學(xué)位論文與資料若有不實之處，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)?？梢怨颊撐牡娜炕虿糠謨?nèi)容，可以允許采用影印、縮印或其它復(fù)制手段保存論文。同時本人保證，畢業(yè)后結(jié)合學(xué)位論文研究課題再撰寫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中快速的模擬了國軍標(biāo)規(guī)定的隨機振動環(huán)境和沖擊振動環(huán)境；對縮減機箱模型進行了模態(tài)分析、隨機振動分析、沖擊響應(yīng)分析，獲得了結(jié)構(gòu)的固有特性及振動響應(yīng)特性。經(jīng)過論證，發(fā)現(xiàn)分析結(jié)果與實際情況大致相符，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)分析隨機振動分析沖擊振動分析

簡介：基于離散頻譜的L波段數(shù)字航空通信系統(tǒng)資源分配研究重慶大學(xué)博士學(xué)位論文學(xué)生姓名黃杰指導(dǎo)教師曾孝平教授專業(yè)通信與信息系統(tǒng)學(xué)科門類工學(xué)重慶大學(xué)通信工程學(xué)院二O一七年四月STUDYONRESOURCEALLOCATIONINNONCONTINUOUSSPECTRUMFLBDIGITALAERONAUTICALCOMMUNICATIONSYSTEMATHESISSUBMITTEDTOCHONGQINGUNIVERSITYINPARTIALFULFILLMENTOFTHEREQUIREMENTFTHEDOCT’SDEGREEOFENGINEERINGBYHUANGJIESUPERVISEDBYPROFZENGXIAOPINGSPECIALTYCOMMUNICATIONINFMATIONSYSTEMCOLLEGEOFCOMMUNICATIONENGINEERINGOFCHONGQINGUNIVERSITYCHONGQINGCHINAAPRIL2017

簡介：南京航空航天大學(xué)碩士學(xué)位論文航空公司飛機恢復(fù)系統(tǒng)問題初步研究姓名柏強申請學(xué)位級別碩士專業(yè)交通運輸規(guī)劃與管理指導(dǎo)教師胡明華20060101航空公司飛機恢復(fù)問題初步研究IIABSTRACTAIRLINESARECONSTANTLYFACEDWITHDISRUPTIONPROBLEMSANDCANNOTEXECUTETHEIRSCHEDULESASPLANNEDBECAUSEOFSEVEREWEATHERPATTERNS,UNEXPECTEDAIRCRAFTMECHANICALFAILURES,CONGESTIONATAIRPORTETCWHENADISRUPTIONOCCURS,THEAIRLINEHAVETORESCHEDULEFLIGHTLEGS,NEEDAPOLICYTODECIDEWHICHFLIGHTLEGSNEEDTOBEDELAYEDANDWHICHONESNEEDTOBECANCELLED,ANDREROUTETHEAIRCRAFTS,CREWS,ANDPASSENGERSTHISPAPERSUMMARIZEDTHESOLUTIONSCURRENTLYADOPTEDBYAIRLINESUNDERTHECIRCUMSTANCESOFINTERRUPTIONSAFTERFULLYMASTERINGTHECOREBUSINESSOFTHEMOSTIMPORTANTDEPARTMENTOFAIRLINESAOCAFTERWARDS,SEVERALEXISTINGMODELSOFAIRLINESRECOVERYWEREREVIEWEDANDTHEAIRLINESINTEGRATEDRECOVERYMODELWASINTRODUCEDINDETAILSTHEAIRCRAFTRECOVERYMODELWITHTHEINTENTIONOFMINIMIZINGAIRLINESOPERATINGCOSTWASRESEARCHEDINDEPTH,INCLUDINGESTABLISHMENTOFTHEMODELANDTHECORRESPONDINGALGORITHMTHESOLUTIONTOTHEAIRCRAFTRECOVERYPROBLEMWASPROPOSEDANDAHEURISTICALGORITHMWASPUTFORWARDTOENGAGECERTAINAIRCRAFTSINTHEREROUTINGCALCULATIONACCORDINGTOTHEDIFFERENTKINDSOFINTERRUPTIONSFINALLY,BASEDONTHEABOVEAIRCRAFTRECOVERYSOLUTION,ADECISIONSUPPORTTOOLOFAIRCRAFTRECOVERYWASDEVELOPEDBYUTILIZINGOFCOMPUTERDEVELOPINGTOOLS,WHICHONTHEOTHERHANDVERIFIEDTHEAIRCRAFTRECOVERYMODELKEYWORDSAIRLINEIRREGULAROPERATION,AIRLINERECOVERYPROBLEM,AIRCRAFTRECOVERY,OPTIMIZATIONMODEL

簡介：中圖分類號V214論文編號102870113S049學(xué)科分類號080104碩士學(xué)位論文航空結(jié)構(gòu)關(guān)鍵部位損傷識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

簡介：分類弓V23題目學(xué)佼代碼10699研究生學(xué)號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

簡介：西北工業(yè)大學(xué)碩士學(xué)位論文光纖通道在航空計算領(lǐng)域的研究和應(yīng)用姓名宋少峰申請學(xué)位級別碩士專業(yè)計算機科學(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

簡介：南京航空航天大學(xué)碩士學(xué)位論文航空發(fā)動機混疊振動信號的盲源分離研究姓名陽平申請學(xué)位級別碩士專業(yè)航空宇航推進理論與工程指導(dǎo)教師李舜酩20080101航空發(fā)動機混疊振動信號的盲源分離研究IIABSTRACTMODERNSIGNALPROCESSINGMETHODSCAN’TSEPARATETHECOMPLICATEDMULTIMIXEDVIBRATIONSIGNALSEFFECTIVELYWITHOUTANYPREINFMATIONASONEOFTHEHOTTESTMOSTEXCITINGTOPICSINTHEFIELDSOFSIGNALPROCESSINGATPRESENTBLINDSOURCESEPATIONBSSISPAIEDATTENTIONFSOLVINGTHISPROBLEMBUTTHERESEARCHESAREMOSTLYABOUTTHETHEYSIMULATIONLITTLEININTHEREALSIGNALAPPLICATIONTHEMAJWKOFTHISPAPERISTORESEARCHTHEEXISTINGMETHODSOFBSSTHENGETSOMEIMPROVEDMETHODSFITTEDFSEPARATINGTHEVIBRATIONSIGNALSWHICHWILLPROVIDEANEWWAYFTHESTATESTIRINGDIAGNOSISOFAIRCRAFTENGINESTHESPECIFICWKASFLOWERING1ANALYSEDEXPLAINEDTHEINDEPENDENTCOMPONENTANALYSISICATHEYALGITHMINDETAILGAVETHECLASSOFCEFUNCTIONAWAYOFITSION2PROPOSEDANIMPROVEDALGITHMCALLEDICAWITHREFERENCEICARWHICHISCOMBINEDWITHACTERSOFTHEVIBRATIONSIGNALTOPURSUITTHEEXPECTEDONETHROUGHSIMULATIONANALYSISTHISTECHNIQUEHASNOTONLYMESEPARATINGPRECISIONBUTALSOFASTERCONVERGENCETHANTRADITIONALMETHODS3ANALYSEDSTSOFVIBRATIONEXPERIMENTSUSINGBSSACHIEVEDSOMEAVAILABLECONCLUSIONSADAPTIVEMETHODSWHICHWASSUCCESSFULTOCONFIRMTHEVALIDITYOFBSSAPPLIEDTOSEPARATINGVIBRATIONSIGNAL4ABSSPACKAGEUSINGMATLABVCSOFTWARESWASDESIGNEDBASEDONTHETHEYOFSETTINGPARAMETERSTHISPACKAGEMADETHEOPERATIONOFBSSSIMULATIONSAPPLICATIONSCONVENIENTLYUNDERAGRAPHICALINTERFACESCONTROLKEYWDSBLINDSOURCESEPARATIONBSSVIBRATIONSIGNALCEFUNCTIONINDEPENDENTCOMPONENTANALYSISWITHREFERENCEICARBSSPACKAGE

簡介：分類號密級UDC編號專業(yè)碩士學(xué)位論文（工程碩士）航空用可快拆蜂窩夾層艙門強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月分類號密級UDC編號專業(yè)碩士學(xué)位論文（工程碩士）航空用可快拆蜂窩夾層艙門強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)位級別學(xué)位級別工程碩士工程領(lǐng)域工程領(lǐng)域機械工程所在單位所在單位機電工程學(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)

簡介：上海交通大學(xué)碩士學(xué)位論文航空發(fā)動機變比熱容熱力計算和系統(tǒng)級仿真研究姓名韋福申請學(xué)位級別碩士專業(yè)航空宇航推進理論與工程指導(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)其中壓力對比熱容的影響很小氣體經(jīng)過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給計算帶來困難為了計算方便將系統(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氣道壓氣機等可把其工質(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每一模塊建立變比熱容的數(shù)學(xué)計算模型同時以單軸渦輪噴氣式發(fā)動機為算例進行計算仿真跟用軟件GASTURB和定比熱計算的結(jié)果相比較證明變比熱的計算結(jié)果合理性和更接近物理實際以及有推廣應(yīng)用的價值最后利用已有的模塊庫對常見的發(fā)動機系統(tǒng)比如渦輪噴氣渦輪軸渦輪螺漿渦輪風(fēng)扇等進行系統(tǒng)建模仿真并對它們進行設(shè)計點和非設(shè)計點的熱力計算非設(shè)計點仿真計算包括速度特性高度特性和節(jié)流特性的計算還有過渡工作狀態(tài)比如啟動加速減速接通加力與斷開加力等仿真從計算結(jié)果的分析和與GASTURB的計算相比較中可以看出利用MODELICADYMOLA進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)動機模塊化建模變比熱容仿真DYMOLAMODELICA

簡介：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)動機智能監(jiān)測中的綜合應(yīng)用姓名羅鋒申請學(xué)位級別碩士專業(yè)載運工具運用工程指導(dǎo)教師李艷軍20090101XRF和顯微圖像技術(shù)在航空發(fā)動機智能監(jiān)測中的綜合應(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

簡介：分類號UDCY1043656學(xué)位論文題目航空發(fā)動機主燃燒室CFD的工程適用性研究研究生姓名于芳學(xué)科專業(yè)名稱航空宇航推進理論與工程研究方向航空發(fā)動機燃燒設(shè)計與分析技術(shù)申請學(xué)位碩士指導(dǎo)教師姓名徐讓書指導(dǎo)教師職稱教授指導(dǎo)教師單位沈陽航空工業(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年月日答辯委員會主席綴教授／評閱人承勰睇嚏助弓FC宕濃教瞧沈陽航空工業(yè)學(xué)院2007年1月沈陽航空工業(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

簡介：中國民用航空學(xué)院碩士學(xué)位論文多航空器沖突檢測與優(yōu)化解脫研究姓名劉煜堃申請學(xué)位級別碩士專業(yè)交通運輸規(guī)劃與管理指導(dǎo)教師徐肖豪聶潤兔20060426

簡介：天津大學(xué)碩士學(xué)位論文基于航空照相槍的飛機姿態(tài)測量姓名汪偉申請學(xué)位級別碩士專業(yè)測試計量技術(shù)及儀器指導(dǎo)教師王向軍20070101ABSTRACTAIRBORNEFIRECONTROLCAMERAGUNISAKINDOFPHOTOGRAPHICANDRECORDINGEQUIPMENTADOPTEDGENERALLYONTHEFIGHTERPLANEITISOFTENINSTALLEDONTHEAIRFOIL，AIRCRAFTNOSEANDCOCKPITWHENFIREBUTTONISPRESSED，CAMERAGUNTAKESPHOTOSOFTARGETALONEORTOGETHERWITHGUNSYSTEMTHEEFFECTOFTRAININGORCOMBATCANBECHECKEDBYWHATCAMERAGUNSHOTATPRESENTTRADITIONALFILMCAMERAGUNHASBEENMOSTWIDELYUSEDONTHEFIGHTERPLANEFILMCAMERAGUNCANNOTSATISFYTHEFLIGHTTRAININGPURPOSEASARESULTOFSOMEDISADVANTAGESOFFILM，SUCHASHIGHCOSTLOWACCURACYANDWHICHISHARDTOSAVETHEIMAGEWHICHISCOLLECTEDBYCAMERAGUNSHOULDBEINTERPRETEDANDANALYZEDWHENTHEFLIGHTTRAININGISFINISHEDTHEREARETWOKINDSOFINTERPRETATIONMETHODBYUSINGFILMCAMERAGUNWHENTHEFLIGHTTRAININGISFINISHEDONEISEMPIRICALINTERPRETATION，THEOTHERISMANUALINTERPRETATIONEMPIRICALINTERPRETATIONCALLWORKEFFECTIVELYWHENTHESHOOTINGDISTANCEISSHORTANDAIRMANMUSTHAVERICHEXPERIENCECOMPAREDWITHTHEEMPIRICALINTERPRETATIONMANUALINTERPRETATIONISOFSOMEACCURACYBUTTHISMETHODISCOMPLEXWHICHNEEDADJUSTMAGNIFICATIONOFIMAGEANDSELECTDIFFERENTINTERPRETATIONACCORDINGTODIFFERENTFIREKINDSITISNECESSARYTOIMPROVETHETRADITIONALFILMCAMERAGUNANDINTERPRETATIONMETHODWITHTHEIMPROVEMENTOFARMYEQUIPMENTANDTHEPROGRESSOFTRAININGREQUIREMENTSTHISPAPERUSESDIGITALEQUIPMENTTORECORDFIRINGEFFECTTHEDESIGNWHICHISCOMPOSEDOFCMOSIMAGINGSENSORUSINGFORIMAGINGCHIP，HIGHCAPACITYFLASHUSINGFORDATAMEMORYANDCPLDUSINGFORCONTROLUNITCANREPLACEFILMCAMERAGUNUSBDATASWITCHISDESIGNEDINORDERTOTRANSFERDATAWHICHISCOLLECTEDBYDIGITALCAMERAGUNTOPCATTITUDEANGLECANBECALCULATEDBYIMAGEANALYSISANDSPECIFICALGORITHMFIRSTOFALL，ASERIESOFIMAGESPREPROCESSINGTECHNIQUESWASTAKENTOEXTRACTTHEPRECISEEDGEOFTARGETIMAGETHEFOURCHARACTERISTICPOINTSOFTHEAIRCRAFTAREEXTRACTEDAFTERIDENTIFYINGTARGETPROFILEANDTHEKEYPOINTCANALSOBEOBTAINEDTHEMEASUREMENTPRINCIPLESANDMETHODOFAIRCRAFTATTITUDEANGLEBASEDONASINGLEIMAGEPLANEISRESEARCHEDBYUSINGPINHOLEPROJECTIONMODELBASEDONTHEKNOWNPARAMETERSINFORMATIONOFTHEAIRCRAFTANDOPTICALSYSTEMSINFORMATION，AIRCRAFT