Upper Surface Morphing for Drag Minimization in NACA 641−612 Airfoil
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Research in morphing wing technology has shown immense promise in the journey towards green aviation. The current study investigates the effects of upper surface profile on the aerodynamic performance of NACA 641−612 airfoil with the aim of exploring its scope as an airfoil morphing technique. The study has been formulated as a multi-objective shape optimization problem by considering drag minimization and lift maximization as the two objective functions. This study provides a method to determine a theoretical upper limit for drag reduction and lift improvement that can be achieved using upper surface morphing. The results of the study indicate that upper surface morphing can lead to significant improvements in lift coefficient and lift-to-drag ratio values.
