23rd Congress of International Council of the Aeronautical Sciences, 8-13 September, 2002, Toronto, Canada
Paper ICAS 2002-R63

ROBUST FLUTTER MARGINS OF A TYPICAL WING SECTION USING WINDTUNNEL EXPERIMENT DATA : A PRELIMINARY STUDY

H. Y. Sutarto, A. S. Rianto , S. Zaki, L. Gunawan
Bandung Institute of technology, Indonesia

Keywords: structured singular value, lft, flutter margins

Flutter prediction methods usually rely on tracking modal damping trends,estimated from flight/experimental data, which are not always accurate indicators of flutter onset. This methods is based on a finite element model of the aircraft and does not directly consider flight/experimental data from the physical model. A new approach to computing flutter instability boundaries based on the structured singular value is presented. This approach is developed that utilizes a theoretical model while directly accounts for the variations using the experimental data.

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