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Psychoacoustic modelling of rotor noise

Torija, Antonio J.; Li, Zhengguang; Chaitanya, Paruchuri

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Authors

Zhengguang Li

Paruchuri Chaitanya



Abstract

The aviation sector is rapidly evolving with more electric propulsion systems and a variety of new technologies of vertical take-off and landing manned and unmanned aerial vehicles. Community noise impact is one of the main barriers for the wider adoption of these new vehicles. Within the framework of a perception-driven engineering approach, this paper investigates the relationship between sound quality and first order physical parameters in rotor systems to aid design. Three case studies are considered: (i) contra-rotating versus single rotor systems, (ii) varying blade diameter and thrust in both contra-rotating and single rotor systems, and (iii) varying rotor–rotor axial spacing in contra-rotating systems. The outcomes of a listening experiment, where participants assessed a series of sound stimuli with varying design parameters, allow a better understanding of the annoyance induced by rotor noise. Further to this, a psychoacoustic annoyance model optimised for rotor noise has been formulated. The model includes a novel psychoacoustic function to account for the perceptual effect of impulsiveness. The significance of the proposed model lies in the quantification of the effects of psychoacoustic factors, such as loudness as the dominant factor, and also tonality, high frequency content, temporal fluctuations, and impulsiveness on rotor noise annoyance.

Citation

Torija, A. J., Li, Z., & Chaitanya, P. (2022). Psychoacoustic modelling of rotor noise. ˜The œJournal of the Acoustical Society of America (Online), 151(3), 1804-1815. https://doi.org/10.1121/10.0009801

Journal Article Type Article
Acceptance Date Feb 26, 2022
Online Publication Date Mar 17, 2022
Publication Date Mar 1, 2022
Deposit Date Feb 28, 2022
Publicly Available Date Sep 17, 2022
Journal The Journal of the Acoustical Society of America
Print ISSN 0001-4966
Volume 151
Issue 3
Pages 1804-1815
DOI https://doi.org/10.1121/10.0009801
Keywords Acoustics and Ultrasonics, Arts and Humanities (miscellaneous)
Publisher URL https://doi.org/10.1121/10.0009801
Related Public URLs http://asa.scitation.org/journal/jas
Additional Information Access Information : Copyright (2022) Acoustical Society of America. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the Acoustical Society of America
Projects : Integrated Flight Control Energy Storage and Propulsion Technologies for Electric Aircraft (INCEPTION)
Grant Number: 73692
Grant Number: RF/201819/18/194

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