A review of unsteady aerodynamics for slender wings undergoing large amplitude motions is presented. Static and unsteady aerodynamics characteristics are discussed, and the relationship between the aerodynamic loads and the leeward structure is investigated. Data is presented showing the influence of the wing motion on the aerodynamic loads. Both large amplitude pitching and rolling motion experimental results are discussed. In the case of large amplitude pitching motions, significant aerodynamic hysteresis is apparent. The hysteresis in the aerodynamic loads is shown to be related to the delay in vortex breakdown on the upstroke and the delay in the re-establishment of the leading edge vortical flow after complete flow separation on the downstroke. A second example of unsteady aerodynamics, namely the phenomenon of wing rock, is examined.


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    Title :

    Unsteady Aerodynamics of Slender Wings


    Contributors:

    Publication date :

    1991


    Size :

    26 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English