Frequency domain aerodynamic analysis of interacting rotating systems
Abstract
A multiple harmonic, frequency domain panel method based on linear compressible aerodynamic theory is developed for the aerodynamic analysis of interacting rotating systems. Each stage of the iteration involves the solution of an isolated propeller or wing problem, the interaction being done through the Fourier transform of the induced velocity field. The method was validated by comparing the predicted velocity field about an isolated propeller with detailed laser doppler velocimeter measurements. The unsteady aerodynamic coupling between a propeller and a wing is analyzed. The mean loads are compared with the measured data and comparisons have been made between the fluctuating loads predicted by the present method and a quasi-steady vortex lattice scheme. Also a counter rotating propeller system has been investigated. The mean performance parameters are compared with measured data, and the predicted velocity field with detailed laser doppler velocimeter measurements. Comparisons have also been made between the fluctuating loads predicted by the present method and a time domain panel method.
Degree
Ph.D.
Advisors
Williams, Purdue University.
Subject Area
Aerospace materials
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