Proposed Measurement Method for UAV Sound Levels

The proliferation of unmanned aerial vehicles of UAVs has created several issues for communities where over flight by these craft may occur. In addition to the potential for crashes and interference with larger air traffic, the noise will also become an issue with the relatively low flight level, less than four hundred feet, especially as larger package carrying commercial UAVs are put into service. The Owens Corning Acoustic Research Center has provided sound power measurement of both fixed wing and multicopter aircraft using the ISO 3745 standard. The resulting sound power data could be used to project the sound of the UAV into the community environment using modeling techniques. This paper will describe the testing methodology and resulting data.