Journal
JOURNAL OF SOUND AND VIBRATION
Volume 333, Issue 16, Pages 3818-3830Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jsv.2014.04.005
Keywords
-
Categories
Funding
- NASA Fixed Wing project
- ATA Engineering, Inc. [SAA3-1239]
Ask authors/readers for more resources
Counter-rotating open rotor acoustic measurements were processed using a two-shaft Vold-Kalman order tracking filter, providing new insight into the complicated noise generation mechanisms of this type of system. The multi-shaft formulation of the Vold-Kalman filter can determine a time-accurate output of shaft order tones associated with each rotor, even as the rotation rate of the two rotors varies. This is a major improvement over the usual short time Fourier transform method for many applications. It was found that the contribution from each rotor to the individual tones varies strongly as a function of shaft order and operating condition. The order tracking filter is also demonstrated as a robust tool for separating the tonal and broadband components of a signal for which the usual shaft phase averaging methods fail. Published by Elsevier Ltd.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available