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Experimental Analysis of the ACASIAS Active Lining Panel

Algermissen, Stephan and Misol, Malte (2020) Experimental Analysis of the ACASIAS Active Lining Panel. European Conference on Multifunctional Structures (EMuS), 17.-18. Nov. 2020, Online.

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The participants of the EU-project ACASIAS develop advanced concepts for aerostructures with multifunctional capabilities. Within work package 3 an active system for noise reduction is integrated into a curved lining panel. The objective is the reduction of the interior sound pressure level by increasing the transmission loss of the lining panel. The application scope includes current propeller driven aircraft and future aircraft with counter-rotating open rotor (CROR) engines. The drawback of these CO2-efficient engines is their high sound emission in the frequency band up to 500 Hz. Active noise reduction systems are able to achieve performance in this frequency band while passive sound insulation materials fall behind. Thus, active systems are the key technology to avoid unacceptably high noise levels for passengers. During the last period of the project the main experiments are conducted. The active lining with its dimensions of 1300 × 1690 mm^2 (W × H) is mounted in a setup in the acoustic transmission loss test facility of the DLR. Several tests in different categories are run to characterize the vibration and sound transmission behavior of the lining. In this paper the active lining and its components are briefly introduced and the results of the modal and the thermal testing are presented.

Item URL in elib:https://elib.dlr.de/139152/
Document Type:Conference or Workshop Item (Speech)
Title:Experimental Analysis of the ACASIAS Active Lining Panel
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Algermissen, StephanUNSPECIFIEDhttps://orcid.org/0000-0002-0507-8195
Misol, MalteUNSPECIFIEDhttps://orcid.org/0000-0001-8056-1569
Date:November 2020
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
EditorsEmailEditor's ORCID iD
Martinez, XavierCIMNE, UPC Barcelona, SpainUNSPECIFIED
Keywords:acoustic control, active lining, modal testing, thermal testing
Event Title:European Conference on Multifunctional Structures (EMuS)
Event Location:Online
Event Type:international Conference
Event Dates:17.-18. Nov. 2020
Organizer:CIMNE Congress Bureau, Barcelona, Spain
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 (old)
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Adaptronics
Deposited By: Algermissen, Dr.-Ing. Stephan
Deposited On:07 Dec 2020 07:17
Last Modified:20 Jun 2021 15:54

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