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dc.contributor.authorHongprapas, Soraraten
dc.date.accessioned2014-03-14T21:28:05Zen
dc.date.available2014-03-14T21:28:05Zen
dc.date.issued1996-12-05en
dc.identifier.otheretd-01312009-063329en
dc.identifier.urihttp://hdl.handle.net/10919/40844en
dc.description.abstractThe inlet buzz phenomenon was investigated experimentally and analytically. An external-compression axisymmetric inlet model, having 74 mm in cowl lip diameter, was tested in the 229x229 sq mm blowdown wind tunnel at Mach 2.4. The test facility has shown potential for the supersonic inlet research. The occurrence of inlet buzz was indicated by the continuous shock oscillation and the static pressure fluctuation. The hypothesis based on internal pressure measurement and shadowgraph pictures during stable operations revealed the substantial influence of the separated flow inside the model. Possible increase in subsonic Mach number at the inlet entrance with decreasing exit throttle area, which could promote an instability, was suggested. A basic theoretical shock-plenum system was developed to simulate the inlet buzz behavior and identify its controlling mechanisms. This nonlinear model was governed by the non-stationary shock wave relation, the plenum chamber mass balance, and the entrance blocking effect, as introduced by the vortex sheet theory. The sustained oscillatory cycle of the resulting solution suggested a possible explanation of the phenomenon by combination of the vortex sheet theory concept and the resonance analysis.en
dc.format.extentxvi, 172 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.isformatofOCLC# 37002257en
dc.relation.haspartLD5655.V855_1996.H664.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectinleten
dc.subjectsupersonicen
dc.subjectbuzzen
dc.subject.lccLD5655.V855 1996.H664en
dc.titlePreliminary experiment and analysis of supersonic inlet buzzen
dc.typeThesisen
dc.contributor.departmentMechanical Engineeringen
dc.description.degreeMaster of Scienceen
thesis.degree.nameMaster of Scienceen
thesis.degree.levelmastersen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.disciplineMechanical Engineeringen
dc.contributor.committeechairNg, Wing Faien
dc.contributor.committeememberMoore, Johnen
dc.contributor.committeememberDancey, Clinton L.en
dc.type.dcmitypeTexten
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-01312009-063329/en
dc.date.sdate2009-01-31en
dc.date.rdate2009-01-31en
dc.date.adate2009-01-31en


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