A concept of system identification applied to high performance aircraft is introduced followed by a discussion on the identification methodology. Special emphasis is given to model postulation using time invariant and time dependent aerodynamic parameters, model structure determination and parameter estimation using ordinary least squares an mixed estimation methods, At the same time problems of data collinearity detection and its assessment are discussed. These parts of methodology are demonstrated in examples using flight data of the X-29A and X-31A aircraft. In the third example wind tunnel oscillatory data of the F-16XL model are used. A strong dependence of these data on frequency led to the development of models with unsteady aerodynamic terms in the form of indicial functions. The paper is completed by concluding remarks.


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    Title :

    Aerodynamic Parameters of High Performance Aircraft Estimated from Wind Tunnel and Flight Test Data


    Contributors:

    Publication date :

    1998-01-01


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




    Aerodynamic Parameters of High Performance Aircraft Estimated from Wind Tunnel and Flight Test Data

    Klein, V. / Murphy, P. C. / Research and Technology Organization; Systems Concepts and Integration Panel | British Library Conference Proceedings | 1999





    Aerodynamic parameters estimated from flight and wind tunnel data

    KLEIN, V. / Joint Institute for Advancement of Flight Sciences / Hampton et al. | AIAA | 1986