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Simulation process for perception-based noise optimization of conventional and novel aircraft concepts

Pieren, Reto and Bertsch, Lothar and Blinstrub, Jason and Schäffer, Beat and Wunderli, Jean Marc (2018) Simulation process for perception-based noise optimization of conventional and novel aircraft concepts. 2018 AIAA Science and Technology Forum and Exposition, 8.-12. Januar 2018, Kissimmee, Florida, USA. doi: 10.2514/6.2018-0264.

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Official URL: http://dx.doi.org/10.2514/6.2018-0266


Noise from civil air traffic affects millions of people worldwide. Aircraft noise management should be addressed by different principal elements, such as noise reduction at the source and noise abatement operational procedures. To date, usually conventional noise metrics are applied towards the acoustical optimization while noise effects are usually only indirectly accounted for. The objective of this contribution is the optimization of conventional and novel aircraft concepts with respect to their evoked aircraft noise annoyance. The optimization will be based on the perceived sound and the associated annoyance. To do so, virtual aircraft flyovers are auralized based on noise level predictions, i.e. they are artificially made audible. The auralization is accomplished by parametric sound synthe- sis and a 3D spatial audio technique. Short-term noise annoyance is measured through controlled listening experiments in which participants rate the level of annoyance for each auralized flyover. The aircraft design and the flight path are evaluated according to the associated annoyance. The subsequent ranking can be compared to a conventional ranking based on standard noise metrics. The results of such a study will help to identify parameters describing aircraft and flight path parameters that have an impact on noise annoyance. Consequently, these parameters can then be selected for further optimization to reach even lower levels of noise annoyance and not simply reduce standard noise metrics. Ultimately, the main goal of the research is optimizing the noise annoyance of (novel) aircraft along tailored flight paths. This contribution documents the status quo of the joint DLR and Empa activities, i.e., the structure of a pilot study. First results that were obtained while developing the methodology and the test cases within the pilot study are presented.

Item URL in elib:https://elib.dlr.de/118422/
Document Type:Conference or Workshop Item (Speech)
Title:Simulation process for perception-based noise optimization of conventional and novel aircraft concepts
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Pieren, Retoreto.pieren (at) empa.chUNSPECIFIED
Bertsch, LotharLothar.Bertsch (at) dlr.dehttps://orcid.org/0000-0003-2780-2858
Blinstrub, Jasonjason.blinstrub (at) dlr.dehttps://orcid.org/0000-0003-1913-0529
Schäffer, Beatbeat.schaeffer (at) empa.chUNSPECIFIED
Wunderli, Jean Marcjean-marc.wunderli (at) empa.chUNSPECIFIED
Date:January 2018
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
DOI :10.2514/6.2018-0264
Keywords:aircraft noise prediction, PANAM, auralization, perception, annoyance
Event Title:2018 AIAA Science and Technology Forum and Exposition
Event Location:Kissimmee, Florida, USA
Event Type:international Conference
Event Dates:8.-12. Januar 2018
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: Bertsch, Dr.-Ing. Lothar
Deposited On:13 Feb 2018 13:41
Last Modified:05 Oct 2018 10:44

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