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Statistical evaluation of flutter boundaries from flight flutter test data

Published online by Cambridge University Press:  03 February 2016

A. A. Abbasi  and
J. E. Cooper
A. A. Abbasi
Affiliation:
School of Mechanical, Aerospace and Civil Engineering, University of Manchester, Manchester UK
J. E. Cooper
Affiliation:
Department of Engineering, University of Liverpool, Liverpool, UK
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Abstract

A methodology is described that determines the statistical confidence bounds on the results from flight flutter tests: modal parameter estimates, flutter margin values and flutter speed estimates, without the need for Monte-Carlo simulation. The approach is based on least squares statistics and eigenvalue perturbation theory applied to the various stages of the analysis process, starting with frequency and damping estimation through to the flutter margin calculations. The technique is demonstrated upon a number of data sets from aeroelastic simulations of flight flutter tests.

Type
Research Article
Information
The Aeronautical Journal , Volume 113 , Issue 1139 , January 2009 , pp. 41 - 51
Copyright
Copyright © Royal Aeronautical Society 2009 

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