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American Institute of Aeronautics and Astronautics

    Course Outline

    Robust Aeroservoelastic Stability Analysis



    Course Outline:

    I. Introduction
    a. Why robustness is important to consider
    b. Why aeroservoelasticity is different from flutter

    II. Robust Stability Theory
    a. Small gain theorem
    b. Mu analysis

    III. Modeling
    a. Structural dynamics and unsteady aerodynamics
    b. Closed-loop aeroservoelasticity
    c. Instability mechanisms

    IV. Aeroservoelastic Models in the mu Framework
    a. State-space realization of models
    b. Finding worst-case perturbation
    c. Match-point flutter and aeroservoelastic stability margins

    V. Robust Models with Uncertainty
    a. Parametric and dynamic uncertainties
    b. Effects and relevance of different types of uncertainties
    c. Adding uncertainty to a model

    VI. Analyzing Flight Data
    a. Incorporating data into a model
    b. Model validation
    c. Utilizing parameter estimation and identification methodologies

    VII. Robust Flutter Margins
    a. Computing nominal and robust flutter margins
    b. Computational algorithms
    c. Flutterometer

    VIII. Applications
    a. Robust flutter analysis of the Aerostructures Test Wing
    b. Robust flutter analysis of the F/A-18 SRA
    c. Robust aeroservoelastic analysis of the F/A-18 HARV