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http://dx.doi.org/10.5139/JKSAS.2013.41.11.849

Aerodynamic Interference Effect of Aircraft Wing Tip Vortex in Formation Flight  

Cho, Hwan-Kee (Department of Flight Operation and Aeronautical Science, CheongJu University)
Lee, Sang-Hyun (Department of Aerospace/Mechnical Engineering, ROK Air Force Academy)
Lee, Soontae (Department of Aerospace/Mechnical Engineering, ROK Air Force Academy)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.41, no.11, 2013 , pp. 849-854 More about this Journal
Abstract
Experimental study was conducted to investigate aerodynamic interference effect of wing tip vortex in formation flight of high speed aircraft. In formation flight, wing tip vortex produced by leading aircraft can affect on the aerodynamic characteristics of trailing aircraft. The interference effect of flow is varied with distances between wing tips of leading and trailing aircraft. It is confirmed, in this study, that the interference of wing tip vortex generated from the leading aircraft makes the aerodynamic forces and moments of the trailing aircraft with the vertical or horizontal positions of the trailing aircraft. Especially, the lift coefficients of trailing aircraft were highly increased at y/b=-0.125, z/b=0.0 or deeply decreased at y/b=-0.5, z/b=0.38. The interfering pattern of wing tip vortices from two aircraft is precisely observed.
Keywords
Formation Flight; Wing Tip Vortex; Wind Tunnel Experiment; Aerodynamic Characteristic;
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