Unsteady Aerodynamics of Deformable Thin Airfoils

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dc.contributor.authorWalker, William Paulen
dc.contributor.committeechairPatil, Mayuresh J.en
dc.contributor.committeememberCanfield, Robert A.en
dc.contributor.committeememberDevenport, William J.en
dc.contributor.departmentAerospace and Ocean Engineeringen
dc.date.accessioned2014-03-14T20:43:43Zen
dc.date.adate2009-08-31en
dc.date.available2014-03-14T20:43:43Zen
dc.date.issued2009-08-05en
dc.date.rdate2009-08-31en
dc.date.sdate2009-08-18en
dc.description.abstractUnsteady aerodynamic theories are essential in the analysis of bird and insect flight. The study of these types of locomotion is vital in the development of flapping wing aircraft. This paper uses potential flow aerodynamics to extend the unsteady aerodynamic theory of Theodorsen and Garrick (which is restricted to rigid airfoil motion) to deformable thin airfoils. Frequency-domain lift, pitching moment and thrust expressions are derived for an airfoil undergoing harmonic oscillations and deformation in the form of Chebychev polynomials. The results are validated against the time-domain unsteady aerodynamic theory of Peters. A case study is presented which analyzes several combinations of airfoil motion at different phases and identifies various possibilities for thrust generation using a deformable airfoil.en
dc.description.degreeMaster of Scienceen
dc.identifier.otheretd-08182009-141222en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-08182009-141222/en
dc.identifier.urihttp://hdl.handle.net/10919/34620en
dc.publisherVirginia Techen
dc.relation.haspartWalker_Thesis_final_revised.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectUnsteady Aerodynamicsen
dc.subjectDeformable Airfoilsen
dc.titleUnsteady Aerodynamics of Deformable Thin Airfoilsen
dc.typeThesisen
thesis.degree.disciplineAerospace and Ocean Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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