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dc.contributor.advisorLindsey, Gerald H.
dc.contributor.authorWalter, Richard W.
dc.date.accessioned2012-11-29T16:19:23Z
dc.date.available2012-11-29T16:19:23Z
dc.date.issued1992-09
dc.identifier.urihttp://hdl.handle.net/10945/24056
dc.description.abstractNAVAIR utilizes the fatigue spectrum of an existing Navy aircraft to set the structural design requirements for a new Navy aircraft. The current design requirement is for the new aircraft to withstand a fatigue spectrum at least as severe as the spectrum experienced by 99.73% (3 standard deviations) of the aircraft from which the design requirement originated. Two years of A-6 data were used in the study, which contained the number of g exceedences at the four g, five g, six g, and seven g levels. Trade off studies were completed to analytically examine the variation in the fatigue life of an aircraft while varying the reference stress at the notch of a crack, re-ordering of the load sequences within the spectrum, varying the 3 sigma design requirement, and changing the material properties of the metal. The results indicated that NAVAIR's current requirement for a new aircraft to withstand a three a spectrum may be too severe. This conclusion is only valid for a three a spectrum based on the A-6 load history.en_US
dc.description.urihttp://archive.org/details/studyofstatistic1094524056
dc.format.extent77 p.;28 cm.en_US
dc.language.isoen_US
dc.publisherMonterey, California. Naval Postgraduate Schoolen_US
dc.titleStudy of statistical variations of load spectra and material properties on aircraft fatigue lifeen_US
dc.typeThesisen_US
dc.contributor.secondreaderWu, Edward M.
dc.contributor.corporateNaval Postgraduate School
dc.contributor.schoolNaval Postgraduate School
dc.contributor.departmentAeronautical Engineering
dc.description.serviceLieutenant, United States Navyen_US
etd.thesisdegree.nameM.S. in Aeronautical Engineeringen_US
etd.thesisdegree.levelMastersen_US
etd.thesisdegree.disciplineAeronautical Engineeringen_US
etd.thesisdegree.grantorNaval Postgraduate Schoolen_US
dc.description.distributionstatementApproved for public release; distribution is unlimited.


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