The Investigation of an Inboard-Winglet Application to a Roadable Aircraft

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dc.contributor.authorIntaratep, Nanyapornen
dc.contributor.committeechairMarchman, James F. IIIen
dc.contributor.committeememberDevenport, William J.en
dc.contributor.committeememberSchetz, Joseph A.en
dc.contributor.departmentAerospace and Ocean Engineeringen
dc.date.accessioned2014-03-14T20:39:48Zen
dc.date.adate2002-06-20en
dc.date.available2014-03-14T20:39:48Zen
dc.date.issued2002-05-31en
dc.date.rdate2003-06-20en
dc.date.sdate2002-06-11en
dc.description.abstractThe inboard-winglet concept was examined for its flow characteristics by testing for pressure coefficients over the wing and winglet surface in the Virginia Tech Stability Wind Tunnel over a range of freestream velocity and angle of attack. The results were analytically applied to calculate aircraft performance of a roadable aircraft, Pegasus II, which used the inboard-winglet concept in its design. The results proved that this concept has the potential to increase a wing lift coefficient at the right combination of thrust setting and freestream velocity better than a conventional wing-propeller arrangement. The lift coefficient inside the winglet channel was approximated as 2D in behavior. It is also shown that the winglets produce thrust at a positive-lift wing configuration. In the Pegasus II, the vertical stabilizers act like inboard winglets and produce a thrust component from its resultant force, giving 5.2% improvement in its effective aspect ratio and resulting in an induced-drag decrease. With an application of the new wing concept, the Pegasus II performance is comparable to other general aviation aircraft.en
dc.description.degreeMaster of Scienceen
dc.identifier.otheretd-06112002-115347en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-06112002-115347/en
dc.identifier.urihttp://hdl.handle.net/10919/33519en
dc.publisherVirginia Techen
dc.relation.haspartetd.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectroadable aircraften
dc.subjectaerodynamicsen
dc.subjectconceptual designen
dc.subjectpropeller-induced flowen
dc.subjectinboard wingleten
dc.titleThe Investigation of an Inboard-Winglet Application to a Roadable Aircraften
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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