Advances in Flight Flutter Testing Techniques : Incorporating statistical confidence bounds and online stability indication approaches into a flight flutter test

Language: English

Published by LAP LAMBERT Academic Publishing, 2011

384433078X / 9783844330786

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Seller: AHA-BUCH GmbH, Einbeck, GermanyAHA-BUCH GmbH

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nach der Bestellung gedruckt Neuware - Printed after ordering - Flight flutter testing is mandatory for aircraft certification; however it is a risky, lengthy and costly process with ever-growing demand for shorter and cheaper as well as online testing tools. This research has dealt with two key issues and the methods developed have been validated on simulated aeroelastic data sets. Firstly, the flutter boundaries are evaluated using statistical confidence criteria based on Least Squares statistics and eigenvalue perturbation theory rooting from noise statistics in the response data from a single flight test outdoing the need for Monte Carlo simulations or repeated tests. The approach is employed on three different flutter prediction tools: Damping Extrapolation method, Flutter Margin method and Envelope Function method. Results from the first two methods showed widening of the confidence bounds with increasing noise whilst the third method remained robust to it. The other research problem involves the development of an online flutter prediction tool using the Envelope Function method. The original approach is extended by making direct use of the chirp response to predict the flutter speed and is applicable to both offline and online versions.…

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Title
Advances in Flight Flutter Testing Techniques : Incorporating statistical confidence bounds and online stability indication approaches into a flight flutter test
Author
Asim Abbasi
Publisher
LAP LAMBERT Academic Publishing
Publication year
2011
Condition
Neu
Binding
Taschenbuch
Language
English
ISBN 10
384433078X
ISBN 13
9783844330786
Item weight
387 grams
Dimensions
220x150x15 mm

AHA-BUCH GmbH

Einbeck, Germany

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