ANZIAM J. 46(E) ppC75--C88, 2005.

Propeller blade signatures in the wavelet domain

D. H. Smith

(Received 11 November 2004, revised 8 February 2005)

Abstract

An in-flight airframe vibration data sample taken from a propeller driven cargo aircraft is viewed in the wavelet and frequency domains, with an emphasis on propeller blade activity. Close examination in the wavelet domain reveals a mechanism by which this activity is shared between adjacent resolution levels, with subsequent wavelet packet decomposition demonstrating alternatives with fewer basis functions.

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Authors

D. H. Smith
DSTO Edinburgh, PO Box 1500, Edinburgh, South Australia 5111. mailto:david.h.smith@csiro.au

Published 15 March 2005, amended March 18, 2005. ISSN 1446-8735

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