Drag measurements over embedded cavities inspired by the microgeometry formed by butterfly scales

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dc.contributorFreeman, L. Michael
dc.contributorSchreiber, Willard C.
dc.contributor.advisorLang, Amy W.
dc.contributor.authorJones, Robert Alan
dc.contributor.otherUniversity of Alabama Tuscaloosa
dc.date.accessioned2017-03-01T14:41:54Z
dc.date.available2017-03-01T14:41:54Z
dc.date.issued2011
dc.descriptionElectronic Thesis or Dissertationen_US
dc.description.abstractThe flight performance of micro air vehicles (MAVs) is greatly affected by gust loading and aircraft designers have sought out nature-inspired designs to compensate for this problem in particular. This study serves to quantify the drag on the surface of D. plexippus (Monarch butterfly) wings during the downstroke of flapping flight due to surface drag. By analyzing the scale pattern on the surface of the wing and approximating the flow conditions using solutions to the Navier-Stokes equation, the sizing requirements for testing a model of the geometry in oil are developed. Two models were constructed and the drag on their surfaces is recorded as a function of the Reynolds number based on gap height. The average partial slip velocities and corresponding drag changes are calculated and the implications of a preferential flow direction for flapping flight are discussed.en_US
dc.format.extent58 p.
dc.format.mediumelectronic
dc.format.mimetypeapplication/pdf
dc.identifier.otheru0015_0000001_0000617
dc.identifier.otherJones_alatus_0004M_10687
dc.identifier.urihttps://ir.ua.edu/handle/123456789/1122
dc.languageEnglish
dc.language.isoen_US
dc.publisherUniversity of Alabama Libraries
dc.relation.hasversionborn digital
dc.relation.ispartofThe University of Alabama Electronic Theses and Dissertations
dc.relation.ispartofThe University of Alabama Libraries Digital Collections
dc.rightsAll rights reserved by the author unless otherwise indicated.en_US
dc.subjectAerospace engineering
dc.titleDrag measurements over embedded cavities inspired by the microgeometry formed by butterfly scalesen_US
dc.typethesis
dc.typetext
etdms.degree.departmentUniversity of Alabama. Department of Aerospace Engineering and Mechanics
etdms.degree.disciplineAerospace Engineering
etdms.degree.grantorThe University of Alabama
etdms.degree.levelmaster's
etdms.degree.nameM.S.
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