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http://dx.doi.org/10.5139/JKSAS.2006.34.3.001

Unsteady Thin Airfoil Theory of a Biomorphing Airfoil  

Han, Cheol-Hui (한양대학교)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.34, no.3, 2006 , pp. 1-5 More about this Journal
Abstract
Birds and insect in nature morph their mean camberline shapes to obtain both lift and thrust simultaneously. Previous unsteady thin airfoil theories were derived mainly for a rigid flapping airfoil. An extended unsteady thin airfoil theory for a deformable airfoil is required to analyze the unsteady two-dimensional aerodynamic characteristics of a biomorphing wing. Theodorsen's approach is extended to calculate the unsteady aerodynamic characteristics of a biomorphing airfoil. The mean camberline of the airfoil is represented as a polynomial. The unsteady aerodynamic characteristics of the morphing airfoil are represented as noncirculatory and circulatory terms. Present theory can be applied to the unsteady aerodynamic analysis of a flapping biomorphing airfoil and the aeroelastic analysis of a morphing wing.
Keywords
Thin Airfoil Theory; Unsteady Aerodynamics; Biomimetics; Biomorphing Airfoil;
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