Experimental Analysis on Aeroacoustics of Propeller in Semi-anechoic Chamber

In order to study the aeroacoustics of aircraft propeller, an experimental platform for propeller aeroacoustics was developed. The aeroacoustic test of the propeller was carried out in a semi-anechoic chamber, and the aerodynamics and far-field noise characteristics of the propeller were obtained. The relationship between propeller aerodynamic parameters, far-field noise, speed and pitch angle was analyzed, respectively. The study proved that the aerodynamic parameters increased with the increase of speed and pitch angle, such as thrust and torque. The largest far-field noise area could move with the change of propeller speed and pitch angle. The experimental platform and test scheme developed in this paper may provide reference for propeller aeroacoustics assessment.