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BENCHMARK FOR EXPERIMENTATION OF ACOUSTIC TRANSMISSION LOSS APPLIED TO HELICOPTER TRIM PANELS

Wijntjes, Rik and Simon, Frank and Haase, Thomas and Unruh, Oliver and Tijs, Emiel (2016) BENCHMARK FOR EXPERIMENTATION OF ACOUSTIC TRANSMISSION LOSS APPLIED TO HELICOPTER TRIM PANELS. In: Proceedings of the European Rotorcraft Forum 2016. European Rotorcraft Forum (ERF), 05.-08. Sept. 2016, Lille, Frankreich.

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Official URL: http://www.erf2016.com/

Abstract

The acoustic Transmission Loss (TL) of a vibrating structure, like a sample of helicopter trim panel, is generally measured in a laboratory set-up within controlled conditions. It represents the ratio between the incident acoustic power and the acoustic power radiated by the panel. To estimate its vibro-acoustic behaviour, it is essential to know precisely the nature of incident pressure field and to distinguish the influence of panel size and boundary conditions. Moreover, the relevance of the outputs depends on the experimental surroundings and instrumentation. The aim of this paper is to present an experimental benchmark study involving different laboratories and operating processes (in laboratory or "in situ ") of "Helicopter GARTEUR (Group for Aeronautical Research and Technology in Europe) Action Group AG20" and relative to the measurement of TL applied to reference trim panels.

Item URL in elib:https://elib.dlr.de/106016/
Document Type:Conference or Workshop Item (Speech)
Title:BENCHMARK FOR EXPERIMENTATION OF ACOUSTIC TRANSMISSION LOSS APPLIED TO HELICOPTER TRIM PANELS
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Wijntjes, RikNLRUNSPECIFIED
Simon, FrankOneraUNSPECIFIED
Haase, ThomasThomas.Haase (at) dlr.dehttps://orcid.org/0000-0002-9553-9628
Unruh, OliverOliver.Unruh (at) dlr.deUNSPECIFIED
Tijs, EmielMicroflownUNSPECIFIED
Date:5 September 2016
Journal or Publication Title:Proceedings of the European Rotorcraft Forum 2016
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Transmission loss, experiments, helicopter, trim panel
Event Title:European Rotorcraft Forum (ERF)
Event Location:Lille, Frankreich
Event Type:international Conference
Event Dates:05.-08. Sept. 2016
Organizer:3AF
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Systems and Cabin
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Adaptronics
Deposited By: Haase, Thomas
Deposited On:12 Sep 2016 07:21
Last Modified:31 Jul 2019 20:03

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