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Aircraft Noise Emission Model Accounting for Aircraft Flight Parameters

Zellmann, Christoph and Schäffer, Beat and Wunderli, Jean-Marc and Isermann, Ullrich and Paschereit, C. O. (2017) Aircraft Noise Emission Model Accounting for Aircraft Flight Parameters. Journal of Aircraft. American Institute of Aeronautics and Astronautics (AIAA). DOI: 10.2514/1.C034275 ISSN 0021-8669

Full text not available from this repository.

Official URL: http://arc.aiaa.org/doi/abs/10.2514/1.C034275

Abstract

Today's aircraft noise calculation programs either use simple sound source descriptions with few input parameters or very sophisticated models with demanding input parameters. To fill the gap between these two approaches, a new model is proposed with the scope to find a reasonable comproise between its degree of detail and number of accessible flight parameters. By means of an extensive data exploration, the flight parameters with the strongest influence on the sound emission level were identified. These parameters were incorporated in two multiple linear regression models, one for airframe and one for engine sound sources. A new method allowed Fitting both source models to flyover measurements of the total aircraft. In total, models for ninteen combinations of aircraft and engine types were eastablished, which underlines the generality of the new source model for turbofan powered aircraft. Exemplary comparisons between measurements and model predictions for two aircraft types revealed, that the model is able to accurately reproduce directivity and spectra for diffrent fligth conditions.

Item URL in elib:https://elib.dlr.de/107703/
Document Type:Article
Additional Information:Publication Date (online): August 28, 2017
Title:Aircraft Noise Emission Model Accounting for Aircraft Flight Parameters
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Zellmann, ChristophEMPA/CH-Abt. LärmbekämpfungUNSPECIFIED
Schäffer, BeatEMPA/CH-Abt. LärmbekämpfungUNSPECIFIED
Wunderli, Jean-MarcEMPA/CH-Abt. LärmbekämpfungUNSPECIFIED
Isermann, Ullrichullrich.isermann (at) dlr.deUNSPECIFIED
Paschereit, C. O.institut für strömungsmechanik und technische akustik, tu berlinUNSPECIFIED
Date:2017
Journal or Publication Title:Journal of Aircraft
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI :10.2514/1.C034275
Publisher:American Institute of Aeronautics and Astronautics (AIAA)
ISSN:0021-8669
Status:Published
Keywords:Fluglärm, Aeroakustik
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
Location: Göttingen
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Helicopter, GO
Deposited By: Bachmann, Barbara
Deposited On:08 Dec 2017 12:11
Last Modified:08 Mar 2018 18:41

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