期刊
COMPTES RENDUS MECANIQUE
卷 340, 期 1-2, 页码 67-80出版社
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.crme.2011.11.007
关键词
Computational fluid mechanics; Spiroid winglets; Lift-induced drag; Drag reduction; Biomimetics
类别
资金
- HPC-Europa2 [238398]
- European Community Research Infrastructure Action
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 bird's 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. (C) 2011 Academie des sciences. Published by Elsevier Masson SAS. All rights reserved.
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