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dc.contributor.advisorHobson, Garth V.
dc.contributor.advisorBaker, Steven
dc.contributor.authorMurphy, William P.
dc.date.accessioned2012-03-14T17:40:12Z
dc.date.available2012-03-14T17:40:12Z
dc.date.issued2008-06
dc.identifier.urihttp://hdl.handle.net/10945/4052
dc.description.abstractThis experiment was conducted to measure transverse vibrations of the blades in a transonic compressor rig at the Naval Postgraduate School. The compressor was instrumented with non-invasive laser light probes to measure changes in time of arrival of all the blades, relative to an expected arrival time. These times were then converted to blade deflections. Results proved that the primary observed vibration was a first bending mode. The frequencies that excited this mode precisely correlated with NASA predictions. It was shown that the modal frequency for the first bending mode was dependent on engine speed as a result of the untwisting blade. Maximum observed blade deflection was proved to occur during the surge event, resulting in maximum blade fatigue. It was concluded that certain operating regimes, with large blade deflections, should be avoided to extend blade life by limiting fatigue.en_US
dc.description.urihttp://archive.org/details/highspeedbladevi109454052
dc.format.extentxiv, 41 p. : ill.(some col.) ;en_US
dc.publisherMonterey California. Naval Postgraduate Schoolen_US
dc.rightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.en_US
dc.subject.lcshCompressorsen_US
dc.subject.lcshBladesen_US
dc.subject.lcshVibrationen_US
dc.subject.lcshSounden_US
dc.subject.lcshPhysicsen_US
dc.titleHigh-speed blade vibration in a transonic compressoren_US
dc.typeThesisen_US
dc.contributor.corporateNaval Postgraduate School (U.S.)
dc.description.serviceUS Navy (USN) author.en_US
dc.identifier.oclc244581448
etd.thesisdegree.nameM.S.en_US
etd.thesisdegree.levelMastersen_US
etd.thesisdegree.disciplineEngineering Acousticsen_US
etd.thesisdegree.grantorNaval Postgraduate Schoolen_US
etd.verifiednoen_US
dc.description.distributionstatementApproved for public release; distribution is unlimited.
dc.description.distributionstatementApproved for public release; distribution is unlimited.


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