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1、The26thCongressofInternationalCounciloftheAeronauticalSciences(ICAS)
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AIAA2008-892614-19September2008,Anchorage,AlaskaASystematicApproachinAircraftConfigurationDesignOptimization1M.SadraeyDanielWebsterCollegeNashua,NH,03063AbstractTraditionalaircraftconfigurationdesignattemptstoachievei
2、mprovedperformanceandreducedoperatingcostsbyminimizingmaximumtakeoffweight.Fromthepointofviewofanaircraftcustomer,however,thismethoddoesnotguaranteetheoptimalityofanaircraftprogram.Multidisciplinarydesignoptimization(MDO)isanimportantpartoftheaircraftconfigurationdesignprocess.Thispaperaddressesasys
3、tematicapproachinaircraftconfigurationdesignoptimization.Itfirstdiscussesthedesignparameters,constraints,objectivesfunctionsandcriteriaandthenaircraftconfigurationclassifications.Thentherelationshipbetweeneachmajordesignoptionandthedesignrequirementsareevaluated.Thenthesystemsengineeringprincipalsar
4、epresented.Attheend,systemsengineeringapproachisappliedintheoptimizationoftheaircraftconfigurationdesignandanewconfigurationdesignoptimizationmethodologyisintroduced.1.IntroductionTraditionalaircraftconfigurationdesignattemptstoachieveimprovedperformanceandreducedoperatingcostsbyminimizingmaximumtak
5、eoffweight.Fromthepointofviewofanaircraftmanufacturer,however,thismethoddoesnotguaranteethefinancialviabilityofanaircraftprogram.Abetterdesignapproachwouldtakeintoaccountnotonlyaircraftperformanceandmanufacturingcost,butalsofactorssuchasaircraftflyingqualities,andsystemsengineeringcriteria.Thehistor
6、icalchoiceofminimizinggrosstake-offweight(GTOW)astheobjectiveinaircraftdesignisintendedtoimproveperformanceandsubsequentlyloweroperatingcosts,primarilythroughreducedfuelconsumption.However,suchanapproachdoesnotguaranteetheoptimalityofagivenaircraftdesignfromtheperspectiveoftheaircraftconsumer.Inanin
7、creasinglycompetitivemarketforaircraft,manufacturersmaywishtodesignforimprovedsystemsengineeringofanaircraftprogram,aswellastechnicalmerit,beforeundertakingsuchacostlyinvestment.Researchersinacademia,
