Pieren, Reto and Bertsch, Lothar and Lauper, Demian and Schäffer, Beat (2019) Future Low-Noise Aircraft Technologies and Procedures - Perception-based Evaluation Using Auralised Flyovers. In: Proceedings of the 23rd International Congress on Acoustics: Integrating 4th EAA Euroregio 2019, pp. 1654-1658. 23rd International Congress on Acoustics, ICA 2019, 2019-09-09 - 2019-09-13, Aachen. doi: 10.18154/RWTH-CONV-238860. ISBN 978-393929615-7. ISSN 2226-7808.
![]() |
PDF
- Only accessible within DLR
374kB |
Official URL: https://www.dora.lib4ri.ch/empa/islandora/object/empa:19538
Abstract
Residents living in the vicinity of airports are exposed to noise from departing and approaching aircraft. Noise may be reduced by introducing novel aircraft technologies and flight procedures. By means of auralisation and listening experiments, such possible future changes can be evaluated by considering human sound perception. In this study, flyovers of different aircraft types and flight procedures were auralised at multiple virtual observer locations, and subsequently evaluated in a psychoacoustic laboratory experiment with respect to short-term noise annoyance. Approaches of an existing reference aircraft, a possible low-noise retrofitted version and a future low-noise design were simulated with standard and tailored procedures. Separate source signals were synthesised for engine broadband, fan tone, airframe broadband, and cavity tone noise. Further, smooth transitions between configurations and operational conditions were modelled to create realistic sounds. To increase plausibility, the propagation simulation considered ground reflection and frequency-dependent amplitude modulation due to propagation through a turbulent atmosphere. The flyover sounds were spatially reproduced by a hemispherical loudspeaker array. The listening experiment revealed significant annoyance reductions for low-noise aircraft types and flight procedures, that maximal benefit is achieved by the combined optimization of aircraft technology and procedure, and that distributed observers need to be considered.
Item URL in elib: | https://elib.dlr.de/126089/ | ||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Document Type: | Conference or Workshop Item (Speech) | ||||||||||||||||||||
Title: | Future Low-Noise Aircraft Technologies and Procedures - Perception-based Evaluation Using Auralised Flyovers | ||||||||||||||||||||
Authors: |
| ||||||||||||||||||||
Date: | September 2019 | ||||||||||||||||||||
Journal or Publication Title: | Proceedings of the 23rd International Congress on Acoustics: Integrating 4th EAA Euroregio 2019 | ||||||||||||||||||||
Refereed publication: | Yes | ||||||||||||||||||||
Open Access: | No | ||||||||||||||||||||
Gold Open Access: | No | ||||||||||||||||||||
In SCOPUS: | Yes | ||||||||||||||||||||
In ISI Web of Science: | No | ||||||||||||||||||||
DOI: | 10.18154/RWTH-CONV-238860 | ||||||||||||||||||||
Page Range: | pp. 1654-1658 | ||||||||||||||||||||
ISSN: | 2226-7808 | ||||||||||||||||||||
ISBN: | 978-393929615-7 | ||||||||||||||||||||
Status: | Published | ||||||||||||||||||||
Keywords: | Aircraft design, low-noise design, noise prediction, auralization, perception-based evaluation | ||||||||||||||||||||
Event Title: | 23rd International Congress on Acoustics, ICA 2019 | ||||||||||||||||||||
Event Location: | Aachen | ||||||||||||||||||||
Event Type: | international Conference | ||||||||||||||||||||
Event Start Date: | 9 September 2019 | ||||||||||||||||||||
Event End Date: | 13 September 2019 | ||||||||||||||||||||
Organizer: | Deutsche Gesellschaft für Akustik, DEGA | ||||||||||||||||||||
HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||||||||||
HGF - Program: | Aeronautics | ||||||||||||||||||||
HGF - Program Themes: | fixed-wing aircraft | ||||||||||||||||||||
DLR - Research area: | Aeronautics | ||||||||||||||||||||
DLR - Program: | L AR - Aircraft Research | ||||||||||||||||||||
DLR - Research theme (Project): | L - Simulation and Validation (old) | ||||||||||||||||||||
Location: | Göttingen | ||||||||||||||||||||
Institutes and Institutions: | Institute for Aerodynamics and Flow Technology > Helicopter, GO | ||||||||||||||||||||
Deposited By: | Winkels, Elisabeth | ||||||||||||||||||||
Deposited On: | 18 Sep 2019 16:52 | ||||||||||||||||||||
Last Modified: | 24 Apr 2024 20:30 |
Repository Staff Only: item control page