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ID:49570045
大小:5.00 MB
页数:108页
时间:2020-03-02
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1、TeamV;108=PreliminaryDesignReviewAAE451AircraftDesignFinalReportTeamV27April,2006StephenBeirneCharlieRushMilesHatemZhengWangChrisKesterBrandonWeddeJimRadtkeGregWilsonTeamV;108TeamV;108ExecutiveSummaryTheBarnOwlisTeamV’ssolutiontotheneedforanalternativef
2、uelaircraftwithinthesingleenginegeneralaviationmarket.Thisneedwillariseaspeak-oilapproachesandpetroleum-basedfuelsbecomescarceandexpensive.TheBarnOwlhasalsobeendesignedwiththenear-termneedforareplacementfor100octanelow-leadaviationgasolineinmind.100low-
3、leadisexpectedtobephasedoutinthenext10years.Thevalueofthisnear-termmarkethasbeenestimatedatover$1billionannuallyonce100low-leaddisappears.PreviousworkbyTeamVhasfocusedondefiningrequirementsfortheBarnOwlanddevelopingtheaircraftconcept.InthisPreliminaryDe
4、signReview,thefeasibilityoftheBarnOwlisdemonstratedbydetailedanalysisoftheconceptanditsfeatures.Aweightfraction-basedsizingcodewasusedtoproduceconstrainedcarpetplots.Alight-weightdesignwasselectedfromthefeasiblespace,andusedforfurtherdetaileddesign.This
5、sizingapproachwascontinuallyupdatedasthedetailedanalyseswererefined.Detailedaerodynamicanalysisconsistedofseveralcoordinatedefforts.Theairfoilcross-sectionwasdesignedusingageneticalgorithm.Thewingplanformwasoptimizedtohaveanellipticalliftdistributionatt
6、hecruisecondition.Athree-dimensionalCMARCanalysisprovideddetailedaerodynamicperformancepredictions.Theteamdevelopedastructurallayoutandselectedmaterialsbasedoncostconsiderations.Detailedstructuralanalysiswascarriedout,optimizingthewingstructureandconfir
7、mingtheviabilityofthefuselagestructurallayout.ComponentweightsweredeterminedandusedincalculatingthestaticlongitudinalstabilityoftheBarnOwl.Theteamsucceededindemonstratingreasonablestability.Stall-spinstabilitywasalsoconsideredandassured.Forpropulsion,an
8、existingdieselengineandexistingpropellerwereselected.Theuseofthisoff-the-shelftechnologywillreducethecostofdevelopmentandeasemanufacturing.TheBarnOwlisprojectedtocost$278,700.ThispriceandtheBarnOwl’ssolidperformancewillmakeitacom
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