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Almost 40 Years of Airframe Noise Research: What did we Achieve?

Dobrzynski, Werner (2010) Almost 40 Years of Airframe Noise Research: What did we Achieve? Journal of Aircraft, Vol. 47 (2), pp. 353-367. American Institute of Aeronautics and Astronautics (AIAA). doi: 10.2514/1.44457.

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With the advent of low noise high bypass ratio turbofan engines airframe noise gained significant importance with respect to the overall aircraft noise impact around airports. Already around 1970 airframe noise, originating from flow around the landing gears and high-lift devices, was recognized as a potential “lower aircraft noise barrier” at approach and landing. Since then, the outcome of extensive acoustic flight tests and aeroacoustic wind tunnel experiments enabled a detailed description and ranking of the major airframe noise sources and the development of noise reduction means. In the last decade advances in numerical and experimental tools led to a better understanding of complex noise source mechanisms. Efficient noise reduction technologies were developed for landing gears while the benefits of high-lift noise reduction means were often compensated by a simultaneous degradation in aerodynamic performance. The focus of this paper is not on the historical sequence of airframe noise research but rather aims to provide a concise survey of the achievements in airframe noise source description and reduction over the last 40 years worldwide. Due to the vast amount of work focused on a variety of airframe noise problems, this review can only provide examples but does not claim to be complete.

Item URL in elib:https://elib.dlr.de/63799/
Document Type:Article
Title:Almost 40 Years of Airframe Noise Research: What did we Achieve?
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Date:April 2010
Journal or Publication Title:Journal of Aircraft
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Volume:Vol. 47
Page Range:pp. 353-367
Publisher:American Institute of Aeronautics and Astronautics (AIAA)
Keywords:Airframe noise, high-lift devices noise, landing gear noise, aerodynamic noise sources, noise reduction technologies
HGF - Research field:Aeronautics, Space and Transport
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: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Technical Acoustics
Deposited By: Dobrzynski, Dr.-Ing. Werner
Deposited On:06 Apr 2010 10:54
Last Modified:08 Mar 2018 18:40

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