Enhancing Aircraft Glide Performance through Wing Geometry Modifications

Abstract

Modifications to wing geometry can significantly influence the glide performance of an aircraft, affecting critical aspects such as lift, drag, and overall flight efficiency. This study investigates how variations in wing design parameters, including aspect ratio, wing loading, and camber, impact the glide ratio and performance of fixed-wing aircraft. Using a combination of computational fluid dynamics (CFD) simulations and scaled model flight tests, the research provides a detailed analysis of how these geometric adjustments affect aerodynamic characteristics during unpowered flight. The results indicate that increasing the aspect ratio, which involves lengthening the wingspan relative to the wing chord, significantly improves glide performance by reducing induced drag, thus enhancing the aircraft's lift-to-drag ratio. This improvement is particularly beneficial during extended glide phases, as it allows for greater distances covered per unit of altitude loss. Adjustments to wing loading, defined as the aircraft’s weight divided by the wing area, showed that lower wing loading generally improves glide efficiency but at the cost of increased sensitivity to turbulence and gusts. Changes in camber, or the curvature of the wing, had more complex effects; higher camber increased lift but also raised drag, highlighting the need for a balanced approach depending on flight conditions.