A procedure for the estimation of airplane model structure and parameters is applied to data from a modern fighter airplane operating within an angle of attack range of 5 to 60 deg. The paper briefly describes the airplane, flight and wind tunnel data available, and the estimation method. The results presented contain basic longitudinal characteristics of the airplane and the estimates of aerodynamic parameters in the yawing-moment equations. These estimates are obtained from small and large amplitude maneuvers. Because the latter set of data was not suitable for airplane identification, some of the large amplitude maneuvers were joined together and then partitioned into subsets according to the values of angle of attack. Each subset was then analyzed as a separate data set. Most of the estimated parameters and functions are in good agreement with the wind tunnel measurements. The estimated lateral parameters in the model equations also demonstrate good prediction capabilities.


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    Title :

    Determination of aerodynamic parameters of a fighter airplane from flight data at high angles of attack


    Contributors:
    Klein, V. (author) / Batterson, J. G. (author) / Abbasy, I. (author)

    Publication date :

    1983-08-01


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English