Vibration and Sound in Aircraft Cabins; A Comparison of Adaptive/Passive and Active Control

971463

05/01/1997

Event
General, Corporate & Regional Aviation Meeting & Exposition
Authors Abstract
Content
Comparative studies between competing engineering techniques are complex, since the comparison depends upon the application. This paper focuses upon periodic vibration and noise in regional turboprops and in fuselage-mounted twin-jets. The vibrations under discussion are propeller harmonics of the turboprop and unbalance tones of the turbojet. Broadband noise (wind noise and combustion noise) is not discussed since no mature active technology is applicable to this type of noise.
No Caption Available
A large body of both active and adaptive/passive technology is applicable to periodic noise. Much of this technology is proprietary and unavailable to the public. Competing approaches are not openly compared; rather each technology is selectively promoted by its marketing team. This paper attempts a comparison. The authors of this paper are members of an engineering team that has recently finished the development of some adaptive/passive technologies.
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DOI
https://doi.org/10.4271/971463
Pages
10
Citation
von Flotow, A., Mercadal, M., Maggi, L., and Adams, N., "Vibration and Sound in Aircraft Cabins; A Comparison of Adaptive/Passive and Active Control," SAE Technical Paper 971463, 1997, https://doi.org/10.4271/971463.
Additional Details
Publisher
Published
May 1, 1997
Product Code
971463
Content Type
Technical Paper
Language
English