A light airplane equipped with an automatic control system which drives large wing flaps and the stabilator so as to produce a constant pitch attitude in all flight modes was analyzed for its response to a specific gust. The aircraft was also equipped with a bank-angle steering, zero sideslip automatic control system which was studied for its effectiveness in suppressing a specific lateral gust. The gusts were assumed to be comprised of 200en1 lateral and 400 vertical sinusoids. Each was used to excite the controlled aircraft and the time response to the sum of all sinusoids was plotted. The assumption was that the gust may be treated as stationary in space but variable in time rather than the reverse. Results indicate that such a control system can suppress vertical gusts up to the limit of control authority. Either the lateral accelerations or the yawing velocity response to lateral gusts can be suppressed with this system but not both simultaneously. (Author)


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    Titel :

    An Analytical Study of the Response of a Constant-Attitude Aircraft to Atmospheric Turbulence


    Beteiligte:
    F. O. Smetana (Autor:in) / R. K. Carden (Autor:in)

    Erscheinungsdatum :

    1973


    Format / Umfang :

    51 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch