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Investigation of the Impact of Real Atmospheric Conditions on Noise Propagation from Small Aircraft Technologies

Gharbi, Sirine and Schady, Arthur and Elsen, Katharina Maria (2023) Investigation of the Impact of Real Atmospheric Conditions on Noise Propagation from Small Aircraft Technologies. In: 10th Convention of the European Acoustics Association. 10th Convention of the European Acoustics Association. 10th Convention of the European Acoustics Association, 2023-09-11 - 2023-09-15, Turin, Italien.

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Official URL: https://appfa2023.silsystem.solutions/atti/000175.pdf

Abstract

The commercialization of urban air mobility (UAM) is increasingly coming into focus. Their range of operation is often limited by noise restrictions in urban areas. Besides psychoacoustic factors, the noise perception of individual flights on the ground is strongly affected by sound propagation through the atmosphere. Recent work has focused on scenario predictions of ground-perceived noise originating from large aircraft. Current prediction models use standardized atmospheric conditions to calculate sound propagation. Previous research shows that at high flyover altitudes and scenario calculations, neglecting meteorological factors gives accurate results for the noise perception on the ground. However, a single small aircraft flies at low altitudes such that assumptions as the strong damping of high-frequency noise propagating from an aircraft to an observer are no longer applicable. Therefore, this study quantifies the differences between standard atmospheric conditions in comparison to real atmospheric relations for low flyover altitudes. The impact of several meteorological state variables is investigated. The atmospheric sound propagation is performed by a numerical Lagrangian sound particle model comparable to ray tracing. The analysis highlights the limitations of current modeling approaches. Future work could suggest optimizing flight paths for local weather conditions to minimize the impact of noise on communities.

Item URL in elib:https://elib.dlr.de/203402/
Document Type:Conference or Workshop Item (Speech)
Title:Investigation of the Impact of Real Atmospheric Conditions on Noise Propagation from Small Aircraft Technologies
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Gharbi, SirineDLR, IPAhttps://orcid.org/0009-0009-4279-0454156851062
Schady, ArthurDLR, IPAhttps://orcid.org/0000-0002-3078-9546UNSPECIFIED
Elsen, Katharina MariaDLR, IPAUNSPECIFIEDUNSPECIFIED
Date:12 September 2023
Journal or Publication Title:10th Convention of the European Acoustics Association
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Publisher:10th Convention of the European Acoustics Association
Status:Published
Keywords:urban air mobility, meteorology, atmospheric sound propagation, ray acoustics
Event Title:10th Convention of the European Acoustics Association
Event Location:Turin, Italien
Event Type:international Conference
Event Start Date:11 September 2023
Event End Date:15 September 2023
Organizer:Politecnico di Torino
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Air Transportation and Impact
DLR - Research area:Aeronautics
DLR - Program:L AI - Air Transportation and Impact
DLR - Research theme (Project):L - Climate, Weather and Environment
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Transport Meteorology
Deposited By: Gharbi, Sirine
Deposited On:03 Apr 2024 11:42
Last Modified:24 Apr 2024 21:03

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