Repository logo

Infoscience

  • English
  • French
Log In
Logo EPFL, École polytechnique fédérale de Lausanne

Infoscience

  • English
  • French
Log In
  1. Home
  2. Academic and Research Output
  3. Conferences, Workshops, Symposiums, and Seminars
  4. Design and experimental validation of an active acoustic liner for aircraft engine noise reduction
 
conference paper

Design and experimental validation of an active acoustic liner for aircraft engine noise reduction

Matten, Gaël
•
Ouisse, Morvan
•
Collet, Manuel
Show more
2017
Proceedings of MEDYNA 2017
MEDYNA 2017: 2nd Euro-Mediterranean Conference on Structural Dynamics and Vibroacoustics

The use of acoustic liners in aviation industry is a quite common solution for reducing the engines acoustic emissions. Although the current solutions based on single or multilayer liners are efficient and compact for the mid and high frequencies, noise mitigation in the low frequencies would require large volumes, making the integration in the nacelle difficult. Moreover, the passive liners are tuned to attenuate fixed frequencies and are optimized for specific flights regimes. An active electroacoustic skin based on a distribution of loudspeaker and microphones is presented here. The acoustic impedance is controlled by an embedded electronic system and can be changed in real time. Compared to a conventional passive liner, it is shown that the resonance frequency of the active skin can be adjusted to better match the flight phase and that the performance is better at low frequency. An experimental campaign in a wind tunnel has been performed and is presented here.

  • Files
  • Details
  • Metrics
Type
conference paper
Author(s)
Matten, Gaël
Ouisse, Morvan
Collet, Manuel
Karkar, Sami
Lissek, Hervé  
Boulandet, Romain  
Versaevel, Marc
Date Issued

2017

Published in
Proceedings of MEDYNA 2017
Subjects

acoustic liner

•

electroacoustic absorbers

URL

URL

https://medyna2017.sciencesconf.org/137339
Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LTS2  
Event nameEvent placeEvent date
MEDYNA 2017: 2nd Euro-Mediterranean Conference on Structural Dynamics and Vibroacoustics

Sevilla, Spain

April 25-27, 2017

Available on Infoscience
April 27, 2017
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/136607
Logo EPFL, École polytechnique fédérale de Lausanne
  • Contact
  • infoscience@epfl.ch

  • Follow us on Facebook
  • Follow us on Instagram
  • Follow us on LinkedIn
  • Follow us on X
  • Follow us on Youtube
AccessibilityLegal noticePrivacy policyCookie settingsEnd User AgreementGet helpFeedback

Infoscience is a service managed and provided by the Library and IT Services of EPFL. © EPFL, tous droits réservés