A limited flight experiment was conducted to document the ground-effect characteristics of the X-29A research airplane. This vehicle has an aerodynamic platform which includes a forward-swept wing and close-coupled, variable incidence canard. The flight-test program obtained results for errors in the airdata measurement and for incremental normal force and pitching moment caused by ground effect. Correlations with wind-tunnel and computational analyses were made. The results are discussed with respect to the dynamic nature of the flight measurements, similar data from other configurations, and pilot comments. The ground-effect results are necessary to obtain an accurate interpretation of the vehicle's landing characteristics. The flight data can also be used in the development of many modern aircraft systems such as autoland and piloted simulations.


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    Title :

    An in-flight investigation of ground effect on a forward-swept wing airplane


    Contributors:

    Conference:

    AGARD Symposium on Aerodynamics of Combat Aircraft, Controls, and of Ground Effect ; 1989 ; Madrid, Spain


    Publication date :

    1989-09-01


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English


    Keywords :


    In-Flight Investigation of Ground Effect on a Forward-Swept Wing Airplane

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