The variation in chord depth along a fully extended wing was studied in 14 bird species. A model of chord depth distribution was derived. The functional and aerodynamic aspects of pinion structure were discussed. Neither the aspect ratio of the wing nor the mode of flight of the bird was clearly related to the form of the chord depth distribution. Results show that separated primaries may improve the aerodynamic properties of the wing by reducing induced drag. This applies only to large birds however results also show that a slit wing aids in generating lift. Despite external similarities in feather position, the mechanism of superated primaries in special forms of powered flight, such as hovering, is quite different, because unsteady processes dominate flow around the wing. Diagrams of the various bird wing configurations are shown. (Author)


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    On the Geometry of the Avian Wing (Studies on the Biophysics and Physiology of Avian Flight 2)


    Beteiligte:
    H. Oehme (Autor:in) / U. Kitzler (Autor:in)

    Erscheinungsdatum :

    1976


    Format / Umfang :

    7 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




    Avian Wing Geometry and Kinematics

    Tianshu Liu / Kathryn Kuykendoll / Ray Rhew et al. | AIAA | 2006




    Aeroelastic mysteries in avian flight

    Försching, Hans / Hennings, Holger | Online Contents | 2012


    The Beginnings of Avian Flight

    Chatterjee, S. | British Library Conference Proceedings | 1997