Novel Propeller Map Scaling Method

摘要

This paper presents a novel method of scaling a baseline propeller map η_(prop) = f(J,C_p,M) in order to obtain the performance of a propeller with different design characteristics. The developed method employs a Goldstein/ Theodorsen model to calculate the ideal efficiency and a simple approach to estimate the propeller activity factor. The proposed scaling technique enables the use of a single propeller map for propellers with different design flight conditions, diameters, number of blades, activity factors, tip speeds, or power, provided that the blade sweep and airfoil distributions remain constant.