Aeroelastic Characteristics of High-Aspect-Ratio Wing According to Wing Shape

Strong interactions occur between aerodynamic characteristics and structural deformation for High-Aspect-Ratio Wing. On this account, a parametric study on aeroelastic characteristics of High-Aspect-Ratio wing is performed for various wing shapes. Wing models with different taper ratio and sweepback angle are selected as subjects and their performances were compared with baseline model. To perform Fluid/Structure Interaction analysis, CFD analysis based on the three-dimensional Euler equations and FEM analysis using MSC Nastran are used. As a result, wing models which have constant chord with tapered outer section had the highest lift coefficient among wing models. And they experienced less wing tip deflection than baseline shape. Therefore, they have superior aeroelastic characteristics and are the most suitable shape for optimization. Nomenclature xi = chordwise coordinate of a structural nodal point yi = spanwise coordinate of a structural nodal point fi = nodal force acting on the i th nodal point wi = weighting factor N = the number of structural nodes C = chord length L = span length Cp = pressure coefficient