27th Congress of International Council of the Aeronautical Sciences, 19 - 24 September 2010, Nice, France
Paper ICAS 2010-3.7.4

DYNAMIC ROUGHNESS AS A MEANS OF LEADING EDGE FLOW CONTROL

P. D. Gall, W. W. Huebsch, A. P. Rothmayer*
West Virginia Univ., USA; *Iowa State University, USA

Keywords: dynamic roughness, separation bubble, flow control

This paper addresses the use of dynamic roughness to favorably alter the flow physics of the boundary layer. The roughness has the ability to expand and contract at specific frequencies and amplitudes such that flow separation is delayed or eliminated. These improvements can improve the aerodynamic characteristics of airfoils

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