Dynamic pressure perturbation method for flutter solution: The Mu-Omega method

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2 Scopus citations

Abstract

Applying perturbation to dynamic pressure in the nominal aeroleastic equation of motion, a Mu-Omega method is presented for flutter solution. Utilizing structured singular value mu as stability margin indicator, the method simply uses frequency domain aerodynamics to solve nominal flutter and divergence margin through frequency domain mu analysis. The error of flutter reduced frequency is selected as convergence criterion during airspeed iteration. Detailed algorithm is given and three numerical examples are solved for demonstration. It is shown that the Mu-Omega method has good convergence and high accuracy, and the flutter and divergence result from the Mu-Omega method correlate well with that of the p-k or KE method.

Original languageEnglish
Title of host publication50th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
StatePublished - 2009
Event50th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference - Palm Springs, CA, United States
Duration: 4 May 20097 May 2009

Publication series

NameCollection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
ISSN (Print)0273-4508

Conference

Conference50th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
Country/TerritoryUnited States
CityPalm Springs, CA
Period4/05/097/05/09

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