Comptes Rendus
no. 1-2
Biomimetic spiroid winglets for lift and drag control
Joel E. Guerrero1  ; Dario Maestro1 ; Alessandro Bottaro1
1 University of Genoa, Department of Civil, Environmental and Architectural Engineering, DICAT, Via Montallegro 1, 16145 Genoa, Italy
Comptes Rendus. Mécanique, Volume 340 (2012) no. 1-2, pp. 67-80.

In aeronautical engineering, drag reduction constitutes a challenge and there is room for improvement and innovative developments. The drag breakdown of a typical transport aircraft shows that the lift-induced drag can amount to as much as 40% of the total drag at cruise conditions and 80–90% of the total drag in take-off configuration. One way of reducing lift-induced drag is by using wingtip devices. By applying biomimetic abstraction of the principle behind a birdʼs wingtip feathers, we study spiroid wingtips, which look like an extended blended wingtip that bends upward by 360 degrees to form a large rigid ribbon. The numerical investigation of such a wingtip device is described and preliminary indications of its aerodynamic performance are provided.

Publié le :
DOI : 10.1016/j.crme.2011.11.007
Mots clés : Computational fluid mechanics, Spiroid winglets, Lift-induced drag, Drag reduction, Biomimetics
Joel E. Guerrero 1 ; Dario Maestro 1 ; Alessandro Bottaro 1

1 University of Genoa, Department of Civil, Environmental and Architectural Engineering, DICAT, Via Montallegro 1, 16145 Genoa, Italy 
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Joel E. Guerrero; Dario Maestro; Alessandro Bottaro. Biomimetic spiroid winglets for lift and drag control. Comptes Rendus. Mécanique, Volume 340 (2012) no. 1-2, pp. 67-80. doi : 10.1016/j.crme.2011.11.007. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2011.11.007/

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