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Low Wavenumber Models for Turbulent Boundary Layer Excitation of Structures Read chapter Read first chapter

2019 | OriginalPaper | Chapter

Numerical and Experimental Assessment of the Linflap Technology for Regional Aircraft Noise Reduction

Authors : Mattia Barbarino, Ignazio Dimino, Antonio Concilio

Published in: Flinovia—Flow Induced Noise and Vibration Issues and Aspects-II

Publisher: Springer International Publishing

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Abstract

Within Green Regional Aircraft (GRA), a JTI Integrated Technology Development (ITD) program, an acoustically treated flap (called lined-flap), has been assessed. The design of such a lined-flap, conceived as a low-noise high-lift device, has been optimized through a suitable evolutionary algorithm that refers to an acoustic finite element (FE) model. An original turbulent empirical model has been implemented to estimate the noise, generated by the trailing edge and scattered by the wing body. A semiempirical model has instead supported the design process, relating the acoustic impedance to structural and materials properties. The capability of the proposed system has been finally checked within devoted wind tunnel test experiments.

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Metadata
Title
Numerical and Experimental Assessment of the Linflap Technology for Regional Aircraft Noise Reduction
Authors
Mattia Barbarino
Ignazio Dimino
Antonio Concilio
Copyright Year
2019
Book
Flinovia—Flow Induced Noise and Vibration Issues and Aspects-II

Print ISBN: 978-3-319-76779-6

Electronic ISBN: 978-3-319-76780-2

Copyright Year: 2019

DOI
https://doi.org/10.1007/978-3-319-76780-2_9

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