A 22-percent dynamically scaled replica of the X-29A forward-swept-wing airplane has been flown in radio-controlled drop tests at the NASA Langley Research Center. A system identification study of the recorded data was undertaken to examine the stability and control derivatives that influence the lateral behavior of this vehicle with particular emphasis on an observed wing rock phenomenon. All major lateral stability derivatives and the damping-in-roll derivative were identified for angles of attack from 5 to 80 degrees by using a data-partitioning methodology and a modified stepwise regression algorithm.


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    Title :

    Lateral stability analysis for X-29A drop model using system identification methodology


    Contributors:

    Publication date :

    1989-06-01


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English






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