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International Journal of Fluid Mechanics Research
ESCI SJR: 0.22 SNIP: 0.446 CiteScore™: 0.5

ISSN Imprimer: 2152-5102
ISSN En ligne: 2152-5110

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International Journal of Fluid Mechanics Research

DOI: 10.1615/InterJFluidMechRes.2018018977
pages 569-577

EFFECT OF WINGLET VARIATION ON UAV AERODYNAMIC CHARACTERISTICS

Felixtianus Eko Wismo Winarto
Department of Mechanical Engineering, Vocational School, Universitas Gadjah Mada, Yogyakarta, Indonesia 55281
Wikan Sakarinto
Department of Mechanical Engineering, Vocational School, Universitas Gadjah Mada, Yogyakarta, Indonesia 55281
Setyawan Bekti Wibowo
Department of Mechanical Engineering, Vocational School, Universitas Gadjah Mada, Yogyakarta, Indonesia 55281

RÉSUMÉ

Unmanned aerial vehicle (UAV) performance and stability are largely influenced by design, especially with regard to wing surface contour flying characteristics. Appropriate aerodynamic character will improve performance and make for cost-effective fuel consumption and flying stability. One such improvement in aerodynamic character is by the winglet attachment. The proper winglet addition will improve lift and decrease drag and also produce compact endurance due to reductions in the wing tip vortex effect. Therefore, winglet attachment has been widely used in commercial aircraft, but rarely in UAV. This research is about improving aerodynamic performance. Better performance for a longer flying time is the first problem in UAV. Increased flying efficiency is produced by winglet configurations rather than by improving the flying time. The experiment begins with a winglet numerical model to decrease the wing tip vortex effect, followed by an aerodynamic flow visualization. In the model, a winglet attachment shows the wing tip vortex effect. The rounded tapered winglet also significantly increases lift force. The highest flight efficiency point on the graph was reached at a 7.5° angle of attraction.


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