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Active Control of Counter Rotating Open Rotor Interior Noise

Haase, Thomas and Algermissen, Stephan and Monner, Hans Peter (2013) Active Control of Counter Rotating Open Rotor Interior Noise. AIA-DAGA 2013 – Conference on Acoustics, 18. - 21.03.2013, Meran, Italien.

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Future aircrafts have to meet the restrictive fuel consumption guidelines of the European Committee. Therefore lightweight materials like carbon fibre reinforced plastics (CFRP) and new engine concepts are investigated. Counter Rotating Open Rotors (CROR) are a very promising approach for a more efficient aircraft. But in combination with a CFRP fuselage the interior noise levels will be increased dramatically because of the high pressures on the fuselage and the low transmission loss of CFRP. In this work active concepts as a lightweight compliant solution will experimentally investigated to improve the acoustic comfort of future aircrafts. A typical aircraft sidewall panel is therefore realized in a sound transmission loss facility and will be controlled actively by a feedforward control system. The panel is excited by a typical multi tonal pressure field which is generated by a speaker array. This preliminary study shows that an active structural acoustic control system can effectively improve the acoustic comfort inside the cabin.

Item URL in elib:https://elib.dlr.de/83470/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:Active Control of Counter Rotating Open Rotor Interior Noise
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Date:March 2013
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:Sound field synthesis, CROR, feedforward, control
Event Title:AIA-DAGA 2013 – Conference on Acoustics
Event Location:Meran, Italien
Event Type:international Conference
Event Dates:18. - 21.03.2013
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 Composite Structures and Adaptive Systems > Adaptronics
Deposited By: Böhringer-Thelen, Isolde
Deposited On:25 Jul 2013 13:46
Last Modified:25 Jul 2013 13:46

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