Annoyance to Noise Produced by a Distributed Electric Propulsion High-Lift SystemA psychoacoustic test was performed using simulated sounds from a distributed electric propulsion aircraft concept to help understand factors associated with human annoyance. A design space spanning the number of high-lift leading edge propellers and their relative operating speeds, inclusive of time varying effects associated with motor controller error and atmospheric turbulence, was considered. It was found that the mean annoyance response varies in a statistically significant manner with the number of propellers and with the inclusion of time varying effects, but does not differ significantly with the relative RPM between propellers. An annoyance model was developed, inclusive of confidence intervals, using the noise metrics of loudness, roughness, and tonality as predictors.
Document ID
20170005762
Acquisition Source
Langley Research Center
Document Type
Conference Paper
Authors
Rizzi, Stephen A. (NASA Langley Research Center Hampton, VA, United States)
Palumbo, Daniel L. (NASA Langley Research Center Hampton, VA, United States)
Rathsam, Jonathan (NASA Langley Research Center Hampton, VA, United States)
Christian, Andrew (NASA Langley Research Center Hampton, VA, United States)
Rafaelof, Menachem (National Inst. of Aerospace Hampton, VA, United States)
Date Acquired
June 26, 2017
Publication Date
June 5, 2017
Subject Category
Acoustics
Report/Patent Number
NF1676L-25580
Meeting Information
Meeting: AIAA Aviation 2017
Location: Denver, CO
Country: United States
Start Date: June 5, 2017
End Date: June 9, 2017
Sponsors: American Inst. of Aeronautics and Astronautics