Which wing feature primarily affects lift and drag during various flight phases?

The primary feature that affects lift and drag during various flight phases is camber. Camber refers to the curvature of the wing's airfoil. When a wing is designed with camber, it allows for a greater differential in air pressure above and below the wing as air flows over it. This differential pressure is essential for generating lift; the airfoil shape combined with camber helps to accelerate airflow over the top surface, creating a low-pressure area that contributes to lift.

Additionally, camber influences drag since a wing with more pronounced camber may encounter different drag characteristics compared to a flat or less cambered wing. The way air is deflected and the flow separation due to the wing's shape greatly impact both lift performance and drag forces acting on the aircraft. In essence, camber is a critical design feature that optimally balances lift and drag across varying flight conditions, enhancing overall flight efficiency and performance.