Flutter analysis of configurations with geometric structural nonlinearities typically is done with time-domain analysis. The results from this process are computationally expensive and can yield cumbersome results that may be difficult to manage/interpret. Compared to time-domain methods, frequency-domain flutter analysis can provide additional insight into the characteristics of a flutter stability problem. By linearizing the aeroelastic problem about the nonlinear equilibrium state, this work applies frequency-domain aeroelastic analysis to the Pazy wing, the subject of the Large Deformation Working Group in the Aeroelastic Prediction Workshop. Generalized aerodynamic forces (GAFs) are computed with both a doublet-lattice method and a computational fluid dynamics solver at a range of reduced frequencies as well as a range of dynamic pressures to account for the dependence of the mode shapes on the nonlinear equilibrium state. These GAFs are used in a p-k flutter solver, which is modified to handle the dependence of the stiffness matrix and GAFs on the dynamic pressure.


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    Title :

    Aeroelastic Analysis of Highly Flexible Wings with Linearized Frequency-Domain Aerodynamics


    Contributors:

    Conference:

    AIAA SciTech Forum ; 2022 ; San Diego, CA, US


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English


    Keywords :


    Aeroelastic Analysis of Highly Flexible Wings with Linearized Frequency Domain Aerodynamics

    Stanford, Bret / Chwalowski, Pawel / Jacobson, Kevin | TIBKAT | 2022


    Aeroelastic Analysis of Highly Flexible Wings with Linearized Frequency-Domain Aerodynamics

    Bret Kennedy Stanford / Kevin Edward Jacobson / Pawel Chwalowski | NTRS


    Aeroelastic Analysis of Highly Flexible Wings with Linearized Frequency-Domain Aerodynamics

    B. K. Stanford / K. E. Jacobson / P. Chwalowski | NTIS | 2021


    Aeroelastic Analysis of Highly Flexible Wings with Linearized Frequency-Domain Aerodynamics

    Stanford, Bret K. / Jacobson, Kevin E. / Chwalowski, Pawel | AIAA | 2023


    Aeroelastic Analysis of Highly Flexible Wings with Linearized Frequency Domain Aerodynamics

    Stanford, Bret / Chwalowski, Pawel / Jacobson, Kevin | AIAA | 2022