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dc.contributor.advisorShreeve, Raymond
dc.contributor.advisorHobson, Garth
dc.contributor.authorMoreno, Oscar Ray
dc.dateMarch 2005
dc.date.accessioned2012-03-14T17:34:31Z
dc.date.available2012-03-14T17:34:31Z
dc.date.issued2005-03
dc.identifier.urihttp://hdl.handle.net/10945/2216
dc.description.abstractResonant excitation tests of rotor blades in vacuum spin pits using discrete oil jets showed that impact erosion of the blades could limit test times, but lower excitation amplitudes were produced using mist nozzles. Smaller diameter discrete jets might extend test times, but to fully prevent erosion, oil mist droplet size needed to be 30 microns or less. The present study examined both approaches. Prototype nozzles were developed to create 0.005 inch diameter multiple discrete jets using first alumina, then stainless steel tubing, laser and micro-machine drilling. The latter technique was selected and 50 were manufactured for evaluation in HCF spin tests. A vacuum test chamber was built to observe and photograph spray patterns from the prototype nozzles and from commercially available mist nozzles. An LDV system was used successfully to determine the velocity of the oil droplets within the mist. A complete mapping of mist nozzle sprays is required to allow routine design of blade excitation systems.en_US
dc.description.urihttp://archive.org/details/investigationndd109452216
dc.format.extentxvi, 95 p. : col. ill.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.lcshLaser Doppler velocimeteren_US
dc.subject.lcshNozzlesen_US
dc.subject.lcshFluid dynamicsen_US
dc.subject.lcshMechanical engineeringen_US
dc.subject.lcshTesting laboratoriesen_US
dc.titleInvestigation and development of oil-injection nozzles for high-cycle fatigue rotor spin testen_US
dc.typeThesisen_US
dc.contributor.corporateNaval Postgraduate School (U.S.).
dc.contributor.departmentMechanical and Astronautical Engineering (MAE)
dc.subject.authorHigh cycle fatigueen_US
dc.subject.authorLaser drilled holesen_US
dc.subject.authorMicro-drilled holesen_US
dc.subject.authorMist nozzlesen_US
dc.subject.authorDiscrete jet nozzlesen_US
dc.subject.authorLaser Doppler velocimetryen_US
dc.subject.authorLiquid impact erosionen_US
dc.subject.authorRotor spin testen_US
dc.description.serviceLieutenant, United States Navyen_US
etd.thesisdegree.nameM.S. in Mechanical Engineeringen_US
etd.thesisdegree.levelMastersen_US
etd.thesisdegree.disciplineMechanical Engineeringen_US
etd.thesisdegree.grantorNaval Postgraduate Schoolen_US
etd.verifiednoen_US
dc.description.distributionstatementApproved for public release; distribution is unlimited.


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