A pilot study was conducted on a flapped semi-span model to investigate the concept and viability of near-wake vortex management via separation control. Passive control was achieved by means of a simple fairing and active control was achieved via zero mass-flux blowing slots. Vortex sheet strength, estimated by integrating surface pressure ports, was used to predict vortex characteristics by means of inviscid rollup relations. Furthermore, vortices trailing the flaps were mapped using a seven-hole probe. Separation control was found to have a marked effect on vortex location, strength, tangential velocity, axial velocity and size over a wide range of angles of attack and control conditions. In general, the vortex trends were well predicted by the inviscid rollup relations. Manipulation of the separated flow near the flap edges exerted significant control over both outboard and inboard edge vortices while producing negligible lift excursions. Dynamic separation and attachment control was found to be an effective means for dynamically perturbing the vortex from arbitrarily long wavelengths down to wavelengths less than a typical wingspan. In summary, separation control has the potential for application to time-independent or time-dependent wake alleviation schemes, where the latter can be deployed to minimize adverse effects on ride-quality and dynamic structural loading.


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    Titel :

    Management of Vortices Trailing Flapped Wings via Separation Control


    Beteiligte:

    Kongress:

    43rd AIAA Aerospace Sciences Meeting and Exhibit ; 2005 ; Reno, NV, United States


    Erscheinungsdatum :

    2005-01-01


    Medientyp :

    Preprint


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :


    Management of Vortices Trailing Flapped Wings via Separation Control

    Greenblatt, D. / American Institute of Aeronautics and Astronautics | British Library Conference Proceedings | 2005




    Vortex Dynamics in Trailing Wakes of Flapped Rectangular Wings

    Jacob, J. D. / Savas, O. / AIAA | British Library Conference Proceedings | 1997


    Interaction of Trailing Vortices with Downstream Wings

    Chen, Chen / Wang, Zhijin / Cleaver, David et al. | AIAA | 2016