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Dobrzynski, W. and Buchholz, H. (1996) Full-Scale A320 Landing Gear Airframe Noise Characteristics. DLR-Interner Bericht. 129-96/43. 110 S.
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Abstract
Flyover noise levels of today's aircraft in the approach configuration - i.e. with slats, flaps and gears deployed -are occasionally dominated by airframe noise contributions. Initial airframe noise tests were performed in the German-Dutch Wind Tunnel, employing full-scale A320 landing gears. Farfield noise characteristics were determined from measurements with different gear configurations (covering different gear elements with streamlined fairings) at wind speeds ranging from 40 to 78 m/s. Aerodynamic noise from landing gears turnes out to be broadband with constant levels in 1/3-oct. bands up to 3 kHz. Levels increase corresponding to the 6th power of flow velocity. From the results of this study it is expected that a noise reduction potential of up to 5 EPNdB could be realized through localized applications of streamlined fairings and/or flow spoilers.
| Item URL in elib: | https://elib.dlr.de/36518/ | |||||||||
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| Document Type: | Monograph (DLR-Interner Bericht) | |||||||||
| Additional Information: | LIDO-Berichtsjahr=1996, | |||||||||
| Title: | Full-Scale A320 Landing Gear Airframe Noise Characteristics | |||||||||
| Authors: |
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| Date: | 1996 | |||||||||
| Open Access: | No | |||||||||
| Gold Open Access: | No | |||||||||
| In SCOPUS: | No | |||||||||
| In ISI Web of Science: | No | |||||||||
| Number of Pages: | 110 | |||||||||
| Status: | Published | |||||||||
| Keywords: | Airframe Noise, Landing Gear Noise | |||||||||
| HGF - Research field: | UNSPECIFIED | |||||||||
| HGF - Program: | other | |||||||||
| HGF - Program Themes: | other | |||||||||
| DLR - Research area: | UNSPECIFIED | |||||||||
| DLR - Program: | no assignment | |||||||||
| DLR - Research theme (Project): | L - Human Factors and Safety in Aeronautics (old) | |||||||||
| Location: | Köln-Porz , Braunschweig , Göttingen | |||||||||
| Institutes and Institutions: | Institute of Aerodynamics and Flow Technology > Institut für Entwurfsaerodynamik | |||||||||
| Deposited By: | DLR-Beauftragter, elib | |||||||||
| Deposited On: | 03 Apr 2006 | |||||||||
| Last Modified: | 27 Apr 2009 10:06 |
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