Inverse Aerodynamic Design Procedure for Propellers Having a Prescribed Chord-Length Distribution

摘要

Inverse designmethods are elegant and efficient tools for the design of aerodynamic shapes like airfoils,wings, andrnpropellers. In the case of propeller design, only a few general parameters have to be prescribed and the designrnprocedure returns the propeller geometry in terms of chord-length and blade-angle distributions along the radius.rnThe common design procedures require the prescription of the lift coefficient over the blade radius in order to obtainrnthe unknown chord length. In this paper, a modified design method is presented that allows for designing optimumrnpropellers having a prescribed chord-length distribution. Now the radial distribution of the lift coefficient becomesrnthe unknown, which is determined by the design procedure.