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Efficient computation of robust flutter boundaries using the mu-k method
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Flight Dynamics.
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Flight Dynamics.ORCID iD: 0000-0003-2391-641X
2006 (English)In: Journal of Aircraft, ISSN 0021-8669, E-ISSN 1533-3868, Vol. 43, no 6, 1763-1769 p.Article in journal (Refereed) Published
Abstract [en]

A simple and efficient algorithm for robust flutter analysis is presented. First, a general linear fractional transformation formulation of the mu-k method is provided, making it straightforward to pose the uncertain flutter equation in a form suitable for structured singular value analysis. The new formulation establishes a close connection between mu-k flutter analysis and traditional frequency-domain flutter analysis, which is used to formulate an efficient algorithm for computation of robust flutter boundaries. The proposed method is successfully applied to an F-16 sample test case with uncertain external stores aerodynamics, showing that standard tools for structural dynamics and unsteady aerodynamics can be used to perform robust flutter analysis with only modest additional modeling.

Place, publisher, year, edition, pages
2006. Vol. 43, no 6, 1763-1769 p.
Identifiers
URN: urn:nbn:se:kth:diva-16224DOI: 10.2514/1.20190ISI: 000242989800019Scopus ID: 2-s2.0-33846046340OAI: oai:DiVA.org:kth-16224DiVA: diva2:334266
Note
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2017-12-12Bibliographically approved

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Ringertz, Ulf

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