These two reports are surveys on the progress and present state of development of dive-control flaps for gliders and airplanes. The second article describes how on the basis of wind tunnel and free-flight tests, the drag increase on brake flaps of the type DFS, can be predicted. Pressure records confirm a two-dimensional load distribution along the brake-flap surface Aerodynamically, the location of the brake flaps along the span is of importance for reasons of avoidance of vibration and oscillation phenomena on control and tail surfaces; statically, because of the magnitude of the frontal drag in diving with respect to the bending moments, which may become decisive for the dimensions of the wing attachment and for the wing covering.


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    Titel :

    DFS Dive-control Brakes for Gliders and Airplanes ; And, Analytical Study of the Drag of the DFS Dive-control Brake


    Beteiligte:
    Jacobs, Hans (Autor:in) / Wanner, Adolf (Autor:in)

    Erscheinungsdatum :

    1940-01-01


    Medientyp :

    Sonstige


    Format :

    Keine Angabe


    Sprache :

    Englisch



    DFS dive-control brakes for gliders and airplanes

    Jacobs, H. / Wanner, A. | Engineering Index Backfile | 1940


    DFS vertical dive brakes on airplanes and gliders

    Jacobs, H. / Wanner, A. | Engineering Index Backfile | 1938


    Analytical study of drag of DFS dive-control brake

    Wanner, A. | Engineering Index Backfile | 1940


    Dive brake of dive bomber Ju 87

    Engineering Index Backfile | 1942