Tests in Langley pressure tunnel of model XA-26 bomber were compared with those of A-26B (twin-engine attack bomber) and showed that static longitudinal stability, indicated by elevator-fixed neutral points, and variation of elevator deflection in straight and turning flight were good. Airplane possessed improved stability at low speeds which was attributed to pronounced stalling at root of production wing. At rudder-force reversal at speeds higher than those in flight tests, agreement in rudder-fixed and rudder- free static directional stability was good. Hinge moment obtained at zero sideslip was satisfactory for determining aileron forces in sideslip.


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    Title :

    Comparison of Wind Tunnel and Flight Measurements of Stability and Control Characteristics of a Douglas A-26 Airplane


    Contributors:
    G. G. Kayten (author) / W. Koven (author)

    Publication date :

    1946


    Size :

    54 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English