Loughborough University
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Loughborough University

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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/7945

Title: Unsteady lifting surface theory applied to a propeller and helicopter rotor
Authors: Runyan, Harry L.
Issue Date: 1973
Publisher: © Harry Laird Runyan
Abstract: This thesis is concerned with the development of a theory for determining the aerodynamic forces for unsteady, compressible subsonic flow on a propeller and helicopter rotor. The acceleration potential method was used in developing the basic equations and the method has been programmed for the propeller on a computer and some results are given. The integral equations was solved by the doublet-lattice method, which consists of placing "load" lines at certain locations on the chord and satisfying the down-vash condition at other selected positions. The examples presented include the spanvise and chordwise loading on a rotating propeller for incompressible flow, an example of compressible flow calculations and finally, a calculation illustrating the loss of aerodynamic damping of a propeller blade due to the passage of the blade over its own wake.
Description: A Doctoral Thesis. Submitted in partial fulfilment of the requirements for the award of Doctor of Philosophy of Loughborough University.
URI: https://dspace.lboro.ac.uk/2134/7945
Appears in Collections:PhD Theses (Aeronautical and Automotive Engineering)

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