Schäffer, Beat and Bertsch, Lothar and Guerin, Sebastien (2019) Aeroacoustics research in Europe: The CEAS-ASC report on 2017 highlights, Contribution: Uncertainty assessment of a parametric aircraft system noise prediction. Journal of Sound and Vibration, 450, pp. 175-198. Elsevier. doi: 10.1016/j.jsv.2019.03.006. ISSN 0022-460X.
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Official URL: https://doi.org/10.1016/j.jsv.2019.03.006
Abstract
Short review of DLR and TU Empa reserach activities toward uncertainty assessment of aircraft noise predictions. A new approach to assess uncertainties associated with the predicted noise levels was introduced in previous publications. The overall uncertainty is thereby comprised of input data, noise modelling, and sound propagation uncertainties. Obviously, each modeled noise source is associated with different input data and modelling uncertainties. According to the constantly changing noise source ranking along typical flight procedures, the overall uncertainty of the predicted ground noise level is highly variable. The new approach is applied to a DLR simulation process to establish a quality assessment and enable a reliable system noise prediction. It is demonstrated how the prediction results are affected by the underlying and prevailing uncertainty. Noise isocontour areas are subject to significant variations when uncertainties are introduced. Uncertainty analysis reveals that uncertainty associated with input data and propagation effects can even exceed the uncertainties of the noise source models when simulating conventional vehicles. The established uncertainty assessment can readily by applied to conventional tube-and-wing vehicles with turbofan engines.
Item URL in elib: | https://elib.dlr.de/126889/ | ||||||||||||||||
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Document Type: | Article | ||||||||||||||||
Title: | Aeroacoustics research in Europe: The CEAS-ASC report on 2017 highlights, Contribution: Uncertainty assessment of a parametric aircraft system noise prediction | ||||||||||||||||
Authors: |
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Date: | 14 March 2019 | ||||||||||||||||
Journal or Publication Title: | Journal of Sound and Vibration | ||||||||||||||||
Refereed publication: | Yes | ||||||||||||||||
Open Access: | No | ||||||||||||||||
Gold Open Access: | No | ||||||||||||||||
In SCOPUS: | Yes | ||||||||||||||||
In ISI Web of Science: | Yes | ||||||||||||||||
Volume: | 450 | ||||||||||||||||
DOI: | 10.1016/j.jsv.2019.03.006 | ||||||||||||||||
Page Range: | pp. 175-198 | ||||||||||||||||
Editors: |
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Publisher: | Elsevier | ||||||||||||||||
Series Name: | Aeroacoustics research in Europe: The CEAS-ASC report on 2017 highlights | ||||||||||||||||
ISSN: | 0022-460X | ||||||||||||||||
Status: | Published | ||||||||||||||||
Keywords: | uncertainty, aircraft noise prediction, PANAM | ||||||||||||||||
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: | Berlin-Charlottenburg , Göttingen | ||||||||||||||||
Institutes and Institutions: | Institute for Aerodynamics and Flow Technology > Helicopter, GO Institute of Propulsion Technology > Engine Acoustic | ||||||||||||||||
Deposited By: | Winkels, Elisabeth | ||||||||||||||||
Deposited On: | 03 Apr 2019 14:02 | ||||||||||||||||
Last Modified: | 08 Apr 2019 03:40 |
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