The main sources of helicopter vibration and noise emissions and adaptive concepts to reduce them
作者:
E. Breitbach,
A. Büter,
期刊:
Journal of Structural Control
(WILEY Available online 1996)
卷期:
Volume 3,
issue 1‐2
页码: 21-32
ISSN:1122-8385
年代: 1996
DOI:10.1002/stc.4300030103
出版商: John Wiley&Sons, Ltd
关键词: Helicopter Vibration and Noise;Rotorsystem;Adaptive Control
数据来源: WILEY
摘要:
AbstractThis paper deals with the sources of helicopter vibration and noise emissions. It shows and evaluates adaptive concepts to reduce them. The main reasons for these emissions are aerodynamic effects such as blade‐vortex‐inter action (BVI), aerodynamic hysteresis, and local transonic effects at the forward moving blade.After a review of conventional control concepts to reduce the vibrations and/or sound emissions, the possibilities to realise an adaptive rotorblade are explained.The understanding of the interaction between the aerodynamic sources and the resulting vibrations and noise is the basis of the design of optimal control conce
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