Dobrzynski, W. and Pott-Pollenske, M. and Gehlhar, B. and Stechow, L. and Herr, M. and Alvarez-Gonzalez, J. (2004) Airframe noise experiments in DLR's project "Quiet Air Traffic". 4th Aeroacoustics Workshop, Aachen (de), 26.-27.02.2004.
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Todays low-noise high-bypass-ratio engines have made airframe noise for large commercial aircraft in the approach configuration comparable to engine noise. As a consequence, flow noise from landing gears and from high lift devices on wings - and its control - will become ever more important. Within DLR's interdisciplinary project "Quiet Air Traffic" therefore an experimental airframe noise study was performed, comprising parametric wind tunnel experiments on full scale landing gears, scaled wing sections, on complete scale model aircraft and on a full scale A320 wing-section. Tests were performed in the Aeroacoustic Wind Tunnel Braunschweig (AWB) and in the German-Dutch Wind Tunnel (DNW-LLF). The results led to the identification of major airframe noise sources and the development of both noise reduction concepts and prediction schemes. This study revealed an airframe noise reduction potential on the order of 3 dB for todays aircraft configurations.
|Document Type:||Conference or Workshop Item (Paper)|
|Title:||Airframe noise experiments in DLR's project "Quiet Air Traffic"|
|Keywords:||Airframe noise, high lift noise, landing gear noise|
|Event Title:||4th Aeroacoustics Workshop, Aachen (de), 26.-27.02.2004|
|HGF - Research field:||Aeronautics, Space and Transport (old)|
|HGF - Program:||Aeronautics|
|HGF - Program Themes:||L VU - Air Traffic and Environment (old)|
|DLR - Research area:||Aeronautics|
|DLR - Program:||L VU - Air Traffic and Environment|
|DLR - Research theme (Project):||L - Quiet Air Traffic (old)|
|Location:||Köln-Porz , Braunschweig , Göttingen|
|Institutes and Institutions:||Institute of Aerodynamics and Flow Technology|
|Deposited By:||Claudia Grant|
|Deposited On:||31 Jan 2006|
|Last Modified:||14 Jan 2010 19:41|
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