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dc.contributor.advisorHebbar, S. K.
dc.contributor.advisorPlatzer, M.F.
dc.contributor.authorCavazos, Odilon V., Jr.
dc.dateJune 1990
dc.date.accessioned2015-01-14T23:47:17Z
dc.date.available2015-01-14T23:47:17Z
dc.date.issued1990-06
dc.identifier.urihttp://hdl.handle.net/10945/44341
dc.descriptionApproved for public release; distribution is unlimited.en_US
dc.description.abstractA water tunnel flow visualization investigation was performed into the high angle of attach aerodynamics of a 2% scale model of the F/A-18 fighter aircraft. The main focus of this study was the effect of pitch rate on the development and bursting of vortices generated from the leading edge extensions in the high angle of attack range with and without yaw. Results of this investigation indicate that that the vortex bursting point (relative to the static case) moves rearward with increasing pitch-up motion and forward with increasing pitch-down motion. For the same pitch rate, vortex bursting was found to occur earlier for the pitch-down motion than for the pitch-up motion, implying aerodynamic hysteresis effects. Yawing the model generated significant vortex asymmetries due to the delayed vortex breakdown on the leeward side for yaw angles of less than 10' . The presence of these asymmetric vortices led to undesirable side forces and yawing moments.en_US
dc.description.urihttp://archive.org/details/aflowvisualizati1094544341
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. As such, it is in the public domain, and under the provisions of Title 17, United States Code, Section 105, may not be copyrighted.en_US
dc.titleA Flow Visualization Study of LEX Generated Vortices on a Scale Model of a F/A-18 Fighter Aircraft at High Angles of Attacken_US
dc.typeThesisen_US
dc.contributor.corporateNaval Postgraduate School (U.S.)
dc.contributor.departmentDepartment of Aeronautics and Astronautics
dc.subject.authorHigh angle of attack aerodynamicsen_US
dc.subject.authoreffect of pitch rate and yawen_US
dc.subject.authorvortex development and burstingen_US
dc.subject.authorflow visualization by dye injectionen_US
dc.subject.authorwater tunnel studiesen_US
dc.subject.authorF/A-18 fighter aircraften_US
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


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