05 - Propulsion
ANALYSIS OF THRUST-SCALED ACOUSTIC EMISSIONS OF AIRCRAFT PROPELLERS AND THEIR DEPENDENCE ON PROPULSIVE EFFICIENCY
X. Geng¹, T. Hu¹, P. Liu¹, T. Sinnige², G. Eitelberg²; ¹Beihang University, China ;²Delft University of Technology, Netherlands
Despite the unmatched aerodynamic efficiency of propellers, their relatively high noise emissions limit widespread application on aircraft. This paper introduces a novel scaling approach to relate propeller noise to propeller thrust. This scaling is then used in sensitivity and optimization studies to quantify the trade-off between propeller noise and efficiency.