Designing and testing unloaded-tip propellers for improved efficiency and reduced noise.

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dc.contributor.advisorVan Treuren, Kenneth W.
dc.creatorDay, Ryan S., 1998-
dc.date.accessioned2024-07-17T13:58:10Z
dc.date.available2024-07-17T13:58:10Z
dc.date.created2023-08
dc.date.issued2023-08
dc.date.submittedAugust 2023
dc.date.updated2024-07-17T13:58:10Z
dc.description.abstractPropellers are currently experiencing a resurgence in interest as propulsion systems on novel aircraft. This thesis examines novel unloaded-tip propeller designs on the basis of efficiency and noise using a new static propeller test stand. 13” diameter propellers with unloaded tips were manufactured from different materials to assess the influence of blade stiffness on propulsive and acoustic performance. Larger, 21” propellers were also designed and manufactured to examine the acoustic and propulsive effects of the unloaded- tip design with new airfoil combinations. Both 13” and 21” blade series were compared to corresponding commercial baseline designs. The 13” blade tests demonstrated that the unloaded tip design is capable of superior efficiency with only a weak dependance on stiffness. 21” tests revealed that the unloaded-tip design reduces near-field noise while maintaining competitive efficiency. A parametric study of unloaded-tip designs with new or hybrid airfoil sections is recommended.
dc.format.mimetypeapplication/pdf
dc.identifier.uri
dc.identifier.urihttps://hdl.handle.net/2104/12781
dc.language.isoEnglish
dc.rights.accessrightsWorldwide access
dc.titleDesigning and testing unloaded-tip propellers for improved efficiency and reduced noise.
dc.typeThesis
dc.type.materialtext
thesis.degree.departmentBaylor University. Dept. of Mechanical Engineering.
thesis.degree.grantorBaylor University
thesis.degree.nameM.S.M.E.
thesis.degree.programMechanical Engineering
thesis.degree.schoolBaylor University

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