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Innovative noise control in ducts
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2017 (English)In: 23rd AIAA/CEAS Aeroacoustics Conference, 2017, American Institute of Aeronautics and Astronautics, 2017Conference paper (Refereed)
Abstract [en]

This paper explores approaches to reduce the noise produced and propagated in the Environmental Control System (ECS) of aircraft. The work has been done as part of a FP7 EU-project “Integrated Design of Optimal Ventilation Systems for Low Cabin and Ramp Noise” (IDEALVENT). A strong constraint that is taken into account concerns the overall efficiency and reliability of the control. Passive strategies, which do not inject additional energy into the system, are adopted for the sake of safety and energy consumption. The mitigation operates on two fronts: flow and acoustic control, using turbulence grids to dampen out the inflow inhomogeneity and turbulence, and micro-perforates for acoustic absorption. In this paper the focus is on describing the novel results obtained by the use of so called micro-perforated plates (MPP’s) for in-duct noise control.

Place, publisher, year, edition, pages
American Institute of Aeronautics and Astronautics, 2017.
National Category
Vehicle Engineering
Identifiers
URN: urn:nbn:se:kth:diva-212025Scopus ID: 2-s2.0-85023635574ISBN: 9781624105043 OAI: oai:DiVA.org:kth-212025DiVA, id: diva2:1133478
Conference
23rd AIAA/CEAS Aeroacoustics Conference, 2017, Denver, United States, 5 June 2017 through 9 June 2017
Note

QC 20170816

Available from: 2017-08-16 Created: 2017-08-16 Last updated: 2017-08-16Bibliographically approved

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Sack, StefanÅbom, Mats
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