1–10 von 31 Ergebnissen
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    Mistuning Identification of Blisks Using Mass Detuning and Influence Coefficients

    Cimpuieru, Mihai / Kelly, Sean T. / Lupini, Andrea et al. | AIAA | 2023

    Integrally bladed disks, also known as blisks, are important components in the operation of gas turbines. To study the dynamics of these

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    Verlag: The American Institute of Aeronautics and Astronautics
    Schlagwörter: Aircraft Engines

    High-Fidelity Aerostructural Optimization with a Geometrically Nonlinear Flutter Constraint

    Gray, Alasdair C. / Riso, Cristina / Jonsson, Eirikur et al. | AIAA | 2023
    , subsonic flutter constraint that captures the large in-flight deflections of very flexible aircraft into high-fidelity gradient-based ...
    Verlag: The American Institute of Aeronautics and Astronautics
    Schlagwörter: Aircraft Wing Design , Aircraft Flutter

    High-Fidelity Gradient-Based Wing Structural Optimization Including Geometrically Nonlinear Flutter Constraint

    Jonsson, Eirikur / Riso, Cristina / Monteiro, Bernardo Bahia et al. | AIAA | 2023
    undeformed wing adds a mass penalty of only 10%. This methodology can help design energy-efficient aircraft with high-aspect-ratio wings, which ...
    Verlag: The American Institute of Aeronautics and Astronautics
    Schlagwörter: Aircraft Components and Structure , Aircraft Wing Design

    Sensitivity-Based Geometric Parametrization and Automatic Scaling for Aerodynamic Shape Optimization

    Wu, Neil / Mader, Charles A. / Martins, Joaquim R. R. A. | AIAA | 2023

    Aerodynamic shape optimization has become well established, with designers routinely performing wing and full aircraft optimizations

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    Verlag: The American Institute of Aeronautics and Astronautics

    Estimating Flutter Bifurcation Diagrams Using the State Velocity

    Riso, Cristina / Cesnik, Carlos E. S. / Epureanu, Bogdan I. | AIAA | 2022

    This paper introduces a method for estimating flutter bifurcation diagrams of systems described by time-domain state-space models. The

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    Verlag: The American Institute of Aeronautics and Astronautics
    Schlagwörter: Aircraft Wings

    Physics-Based Data-Driven Buffet-Onset Constraint for Aerodynamic Shape Optimization

    Li, Jichao / He, Sicheng / Zhang, Mengqi et al. | AIAA | 2022
    is still a lack of accurate and efficient buffet formulation to impose the constraint. This work proposes a physics-based data-driven buffet ...
    Verlag: The American Institute of Aeronautics and Astronautics
    Schlagwörter: Aircraft Design

    Flexible Aircraft Simulation Validation with Flight Test Data

    Guimarães Neto, Antônio B. / Barbosa, Guilherme C. / Paulino, Juliano A. et al. | AIAA | 2021

    The challenges of modeling flexible aircraft include appropriate fidelity capturing and validation with experimental data. In fact, the

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    Verlag: The American Institute of Aeronautics and Astronautics

    Coupled Newton–Krylov Time-Spectral Solver for Flutter and Limit Cycle Oscillation Prediction

    He, Sicheng / Jonsson, Eirikur / Mader, Charles A. et al. | AIAA | 2021

    Flutter and limit cycle oscillation (LCO) are important phenomena that need to be considered in aircraft design. Previous harmonic

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    Verlag: The American Institute of Aeronautics and Astronautics
    Schlagwörter: Aircraft Design

    Efficient Mesh Generation and Deformation for Aerodynamic Shape Optimization

    Secco, Ney R. / Kenway, Gaetan K. W. / He, Ping et al. | AIAA | 2021
    deformed meshes may contain bad-quality cells that degrade the accuracy of computational fluid dynamics (CFD) solvers. Moreover, an inefficient ...
    Verlag: The American Institute of Aeronautics and Astronautics

    Linear Stability-Based Smooth Reynolds-Averaged Navier–Stokes Transition Model for Aerodynamic Flows

    Halila, Gustavo Luiz Olichevis / Yildirim, Anil / Mader, Charles A. et al. | AIAA | 2021
    in parts of the aircraft in multiple flight conditions. Modified Reynolds-averaged Navier–Stokes (RANS) models that consider transition ...
    Verlag: The American Institute of Aeronautics and Astronautics