Airfoil design refers to the shape and structure of wings or blades that generate lift when air flows over them. The primary goal is to create a shape that minimizes drag while maximizing lift, allowing aircraft and other vehicles to fly efficiently. Key factors in airfoil design include the curvature, thickness, and angle of attack, which all influence how air moves around the surface. Engineers use various tools and techniques, such as computer simulations and wind tunnel testing, to refine airfoil shapes. The design process often involves balancing performance with stability and control, ensuring that the airfoil meets specific requirements for different types of aircraft, such as commercial jets or gliders.