The wings on aircraft can experience unsteady loads due to atmospheric disturbances (e.g., wind), the wakes of other aircraft, structural vibrations, or some combination of these sources. In some cases flow unsteadiness can be beneficial by augmenting the lift and reducing the drag; under different circumstances temporal variations in the flow can induce stall or cause structural failure. In this study, the response of isolated and tandem airfoils to time-periodic variations in the flow angle and velocity magnitude have been investigated. The predicted results indicate that both sources of unsteadiness can cause the airfoil(s) to produce thrust (instead of drag) during a significant portion of an unsteady oscillation cycle.


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    Titel :

    Study of periodic gust loads on airfoils


    Weitere Titelangaben:

    Untersuchung von periodischen Böenlasten auf Tragflächen


    Beteiligte:
    Nakajima, T. (Autor:in) / Dorney, D.J. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    1996


    Format / Umfang :

    9 Seiten, 21 Bilder, 1 Tabelle, 13 Quellen



    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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    A Numerical Study of Gust Suppression by Flapping Airfoils

    Gopalan, H. / Povitsky, A. / American Institute of Aeronautics and Astronautics | British Library Conference Proceedings | 2008


    Gust Loads Fundamentals

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