Control of aircraft interior noise using globally detuned vibration absorbers
Control of aircraft interior noise using globally detuned vibration absorbers
- New search for: Fuller, C.R.
- New search for: Maillard, J.P.
- New search for: Mercadal, M.
- New search for: Flotow, A.H. von
- New search for: Fuller, C.R.
- New search for: Maillard, J.P.
- New search for: Mercadal, M.
- New search for: Flotow, A.H. von
An analytical model of the structural acoustic behavior of a propeller aircraft including vibration absorbers attached to the fuselage has been developed. The model was then used to study the potential of vibration absorbers for reducing interior noise. The results demonstrate that when the tuned absorbers are correctly configured, attenuation of 6 - 10 dB in the total interior acoustic potential energy is possible. The model also demonstrated that globally detuning the absorbers to minimize an interior acoustic cost function gives improved attenuation over tuned absorbers. Further analysis indicated that the attenuations are relatively insensitive to small changes in the disturbance frequency at the blade passage frequency. The importance of the positioning of the absorbers was also shown.
Document information
Control of aircraft interior noise using globally detuned vibration absorbers
Regelung des Flugzeuginnengeräusches mit Hilfe global verstimmter Schwingungsabsorber
Journal of Sound and Vibration ; 203 , 5 ; 745-761
1997
17 Seiten, 7 Bilder, 6 Tabellen, 15 Quellen
Article (Journal)
English
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