C.R. Fuller, J.P. Maillard, M. Mercadal, A.H. von Flotow

A simplified analytical structural acoustics model of a propeller aircraft is developed to study the potential of mechanical vibration absorbers for reducing interior noise. The results show that globally detuning the absorbers to minimize an interior . acoustic cost function gives attenuations of the order of 6-10 dB of the blade passage frequency interior noise when properly configured. The analysis also predicts that globally detuned absorbers consistently out perform tuned absorbers in which the base motion is directly minimized.

First Joint CEAS/AIAA Aeroacoustics Conference, München, 1995

Conference Paper

englisch

21,0 x 29,7 cm, 10 Seiten

DGLR-Bericht, 1995, 1995-01, First Joint CEAS/AIAA Aeroacoustics Conference - Proceedings; S.615-624; 1995; Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V., Bonn

NA

aeroacoustics

Bibliothek

1995