Reduced drag, increased lift and, consequently, increased vital ratio and lift-to-drag coefficients are crucial in almost all efficient micro air vehicles. Riblet geometries use a variety of air vehicles. Further investigation on micro air vehicles is, however, necessary for enhanced development. Rectangular riblets on a rectangular micro air vehicle are computationally investigated. In this study, the governing equation of fluid flow is solved numerically; the turbulent model around the NACA S5020 airfoil section is covered by riblets either on both sides or on the upper side of the wings. Results show a difference of behavior in drag reduction due to the angle of attack on the airfoil. When the lift-to-drag coefficient of an angle of attack is at its maximum, an improvement can be observed, where lift-to-drag ratio increases, and drag decreases. Results for the two-side riblets show an increase in the lift-to-drag ratio as well; although the lift-to-drag coefficient and the drag reduction of riblets on both sides were comparatively less than that for riblets on the upside.


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    Titel :

    The effects of rectangular riblets on rectangular micro air vehicles for drag reduction




    Erscheinungsdatum :

    2017




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch



    Klassifikation :

    BKL:    55.50 Luftfahrzeugtechnik / 55.60 Raumfahrttechnik
    Lokalklassifikation TIB:    275/7040



    The effects of rectangular riblets on rectangular micro air vehicles for drag reduction

    Radmanesh, Mohammadreza / Samani, Iman / Amiriyoon, Alireza et al. | SAGE Publications | 2017


    Drag reduction in a rectangular duct using riblets

    Moore, A.R. | Online Contents | 1995


    Micro riblets for drag reduction

    Huang, Jin-Biao / Ho, Chin-Ming | Tema Archiv | 1995


    Wavy riblets for turbulent drag reduction

    Kramer, Felix / Grueneberger, Rene / Thiele, Frank et al. | AIAA | 2010


    Turbulent Drag Reduction by Oscillating Riblets

    Wassen, Erik / Kramer, Felix / Thiele, Frank et al. | AIAA | 2008