A study of aircraft trailing vortex systems, involving actual flight testing as well as model testing and analytical considerations, resulted in a method for predicting the vortex geometry and velocity field downstream of an aircraft. It is found that the vortex decay can be described by geometric similarity considerations and not by any modification of the Navier-Stokes equations. This conclusion is based on detailed velocity measurements made through the vortex immediately behind a test aircraft up to distances of approximately 1000 chord lengths downstream of the aircraft. The report includes a presentation of the data on which the conclusions are based, as well as a description of test equipment and procedures. (Author)


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    Title :

    Structure of Trailing Vortices


    Contributors:

    Publication date :

    1968


    Size :

    10 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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