A spoiling apparatus for triggering a turbulent transition by autonomous disturbance and spoilers. The spoilers are mounted in multiple grooves in the circumferential direction of a navigating body, when a flow autonomously undergoes a turbulent transition, the spoilers remain in the grooves, the surface of the navigating body is free of protrusion, thus causing no additional flow resistance. A rated critical Reynolds number is set, in a case of a reduced flow speed and reduced density, the flow is a laminar flow, at which time the pressure applied to the spoilers by the flow is reduced, and the spoilers are ejected under the effect of compression springs. When ejected, the spoilers disturb the flowing of the bottom layer of the flow, and trigger the laminar flow into a turbulent flow. By setting the rebounding force of the compression springs, the spoiling apparatus is turned on automatically when a disturbance-triggered turbulent transition is required and is turned off when not required, thus implementing the autonomous control of turbulent transitions.


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    Title :

    Spoiling apparatus for triggering turbulent transition by autonomous disturbance and spoilers


    Contributors:
    LU HONGZHI (author) / ZHAO JING (author) / LIU LILI (author) / HUI JUNPENG (author) / LIU MINHUA (author) / ZHAO MIN (author) / KANG LEIJING (author) / ZHAO YUE (author) / LI YIFAN (author)

    Publication date :

    2024-08-20


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    G05B Steuer- oder Regelsysteme allgemein , CONTROL OR REGULATING SYSTEMS IN GENERAL / B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS / B64C AEROPLANES , Flugzeuge



    SPOILING APPARATUS FOR TRIGGERING TURBULENT TRANSITION BY AUTONOMOUS DISTURBANCE AND SPOILERS

    LU HONGZHI / ZHAO JING / LIU LILI et al. | European Patent Office | 2021

    Free access


    Separated Hypersonic Turbulent Flow Measurements on Spoilers

    R. Berman / A. Hecht / J. Metzger et al. | AIAA | 1977


    Autonomous Control of Parafoils Using Upper Surface Spoilers

    Ward, Michael B. / Costello, Mark | AIAA | 2013


    Flutter Spoilers

    Doggett, Robert V., Jr. | NTRS | 1991