Belly landing Airplane - Aerodynamics

In addressing the aerodynamics of our plane, a comprehensive analysis was conducted using XFLR to determine the most suitable airfoil. Additionally, I delved into an in-depth examination of the correlations between airfoil cambers and lift coefficients (link provided below). Given the specific requirements of our slow-flying aircraft, characterized by a high minimum climb angle, we opted for the NACA 7412 airfoil with a significant camber.

Once the airfoil selection was finalized, our focus shifted to exploring the potential use of slotted flaps. To establish theoretical lift and drag values for subsequent power calculations, we employed a multi-faceted approach. Firstly, we conducted a SolidWorks flow simulation model of the plane. Subsequently, we created a to-scale model of the wing, utilizing it for wind tunnel tests to further refine our understanding of the aerodynamic characteristics.

The outcome of our rigorous testing affirmed the suitability of the chosen airfoil. Additionally, the results supported the decision to incorporate slotted flaps into our design, enhancing the overall aerodynamic performance of the hand-launched belly landing plane.