This study investigates the fluid dynamic performance and flow behavior of a reversible S-cambered airfoil designed to enhance aerodynamic adaptability in variable operating conditions. Numerical simulations were performed using computational fluid dynamics (CFD) to evaluate lift, drag, and pressure distribution over a range of angles of attack and Reynolds numbers. The results demonstrate that the reversible S-camber configuration significantly improves lift-to-drag ratios compared to conventional symmetric and cambered airfoils, particularly in transitional flow regimes. Flow visualization revealed complex vortex dynamics and delayed flow separation under reversing camber conditions, contributing to improved stall characteristics. These findings indicate that reversible S-cambered airfoils hold strong potential for applications requiring rapid aerodynamic reconfiguration, such as unmanned aerial vehicles (UAVs) and morphing wing systems. Future work will focus on experimental validation and structural integration strategies for real-world implementation.

Reversible airfoil, S-camber, fluid dynamics

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