Using Simscale to Model R.C. Airplane Propeller Noise Reduction

Abstract

This research paper will explore the sound pressure level of a propeller. The geometric features of the propeller manipulate the main factor of noise: vortices. There are different advantages and disadvantages regarding having quieter propellers such as less lift, which decreases velocity. This paper demonstrates the effect of the differing velocity inlets that change the gauge pressure and magnitude of the velocity. Using the velocity inlet magnitudes, I drew a relationship between the velocity inlet magnitude and the sound pressure level, showing how future propeller designs should increase the rotational speed to minimize noise levels. Making the radio-controlled airplanes less loud would allow them to play a significant role in transportation.