The trailing-wing sensor technique was used in the Langley V/STOL tunnel to determine the effectiveness of 11 combinations of the existing flight-spoiler segments on a jumbo-jet transport aircraft model when they were deflected as trailing-vortex-alleviation devices. All 11 of the flight-spoiler configurations investigated were effective in reducing the induced rolling moment on the trailing model. This investigation is an extension of earlier wind-tunnel and flight tests which showed that the existing flight spoilers on the jumbo-jet aircraft can be used as effective trailing-vortex-alleviation devices. Essentially, all of the reduction in induced rolling moment on the trailing-wing model was realized at a spoiler deflection of 45 deg for single-spoiler configurations, 30 for two-spoiler configurations, and 15 deg for both the three- and four-spoiler configurations. Of the 11 flight-spoiler configurations investigated, the most promising configuration for trailing-vortex abatement on the jumbo-jet aircraft appears to be the three inboard flight spoilers deflected 15 deg.


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    Titel :

    Low-Speed Wind-Tunnel Parametric Investigation of Flight Spoilers as Trailing-Vortex-Alleviation Devices on a Transport Aircraft Model


    Beteiligte:
    D. R. Croom (Autor:in)

    Erscheinungsdatum :

    1979


    Format / Umfang :

    46 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch