| Issue |
Volume 5, Juin 2013
Progress in Flight Physics
|
|
|---|---|---|
| Page(s) | 583 - 600 | |
| Section | Chapter Nine. Configuration aerodynamics, sonic boom, and aircraft aerodynamic model | |
| DOI | https://doi.org/10.1051/eucass/201305583 | |
| Published online | 14 June 2013 | |
Experimental research of the boundary layer structure at near-critical angles of attack for the classical and wavy wings
Khristianovich Institute of Theoretical and Applied Mechanics Siberian Branch of the Russian Academy of Sciences 4/1 Institutskaya Str., Novosibirsk, Russia
The structure of the boundary layer on the classical and wavy wings at near-critical angles of attack at the Reynolds number Re = 140,000 is studied with the use of oil-film and infrared (IR) visualization. A boundary layer with a specific structure is demonstrated to form on the wing with the wavy surface. This boundary layer is more stable to separation from the wing surface. As a result, the wing with a wavy surface has a greater critical angle of attack and a greater maximum lift coefficient. Improvement of aerodynamic characteristics of the wavy wing, as compared with the classical wing, is confirmed by balance measurements.
© Owned by the authors, published by EDP Sciences, 2013
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