Longitudinal control of a hang glider by weight shift is not always adequate for recovery from a vertical dive. According to Lanchester's phugoid theory, recovery from rest to horizontal flight ought to be possible within a distance equal to three times the height of fall needed to acquire level flight velocity. A hang glider, having a wing loading of 5 kg sq m and capable of developing a lift coefficient of 1.0, should recover to horizontal flight within a vertical distance of about 12 m. The minimum recovery distance can be closely approached if the glider is equipped with a small all-moveable tail surface having sufficient upward deflection.


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    Titel :

    Dynamics of Ultralight Aircraft: Dive Recovery of Hang Gliders


    Beteiligte:
    R. T. Jones (Autor:in)

    Erscheinungsdatum :

    1977


    Format / Umfang :

    15 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch





    Dynamics of hang-gliders

    DE MATTEIS / GUIDO | AIAA | 1991


    Hang Gliders

    NTRS | 1981