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Contributions of Different Aeroacoustic Sources to Aircraft Cabin Noise

Hu, Nan and Buchholz, Heino and Herr, Michaela and Spehr, Carsten and Haxter, Stefan (2013) Contributions of Different Aeroacoustic Sources to Aircraft Cabin Noise. American Institute of Aeronautics and Astronautics. 34th AIAA Aeroacoustics Conference, 27. - 29. Mai 2013, Berlin, Germany.

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Official URL: http://arc.aiaa.org/doi.10.2514/6.2013-2030

Abstract

The turbulent boundary layer (TBL) on the fuselage, jet noise and the air conditioning system (ACS) are considered as three important aeroacoustic sources of aircraft cabin noise. To improve current cabin noise prediction approaches as well as to investigate the different noise sources and their respective noise transfer paths, flight tests with DLR’s A320-232 research aircraft ’D-ATRA’ were carried out within the German national (LuFo IV) project SIMKAB. Extensive measurement data were collected using microphones inside the cabin, unsteady surface-pressure sensors for the characterization of the external TBL- and jet noise induced fuselage excitation, and accelerometers mounted at the frame structure, fuselage skin fields and cabin panels. Flight speed and -level as well as engine and air conditioning system operating conditions were varied to separately evaluate their parametric effects on cabin noise. The analysis of this extensive data base is still ongoing; in the current paper the focus is set on the results from microphone measurements at various longitudinal positions inside the cabin. Both TBL- and jet noise induced contributions increase towards the rear, reflecting the natural growth of the TBL thickness and typical jet noise radiation characteristics. Contrary to that the air conditioning system noise is of minor importance.

Item URL in elib:https://elib.dlr.de/82852/
Document Type:Conference or Workshop Item (Speech)
Additional Information:DOI: 10.2514/6.2013-2030
Title:Contributions of Different Aeroacoustic Sources to Aircraft Cabin Noise
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Hu, NanUNSPECIFIEDUNSPECIFIED
Buchholz, HeinoUNSPECIFIEDUNSPECIFIED
Herr, MichaelaUNSPECIFIEDUNSPECIFIED
Spehr, CarstenUNSPECIFIEDUNSPECIFIED
Haxter, StefanUNSPECIFIEDUNSPECIFIED
Date:2013
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:pp. 1-10
Publisher:American Institute of Aeronautics and Astronautics
Series Name:Conference Proceedings online
Status:Published
Keywords:Flugzeug Kabinenlärm/Wichtigkeit jeder Quellen/Abhängigkeit von Flughöhen und Fluggeschwindigkeiten
Event Title:34th AIAA Aeroacoustics Conference
Event Location:Berlin, Germany
Event Type:international Conference
Event Dates:27. - 29. Mai 2013
Organizer:AIAA
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research (old)
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Systems & Cabin (old)
Location: Braunschweig , Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Technical Acoustics
Institute of Aerodynamics and Flow Technology > Experimental Methods
Deposited By: Hu, Nan
Deposited On:14 Jun 2013 10:14
Last Modified:31 Jul 2019 19:41

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