Why wouldn't we fly with icing on wings?

• A. Icing negatively affects the aerodynamics of the wings, reducing lift creation drastically
• B. Icing increases lift
• C. Icing has no effect on aerodynamics
• D. Icing improves stall characteristics

Answer: (C)

Ice on a wing changes how air flows over the airfoil. The ice roughens the surface and adds thickness, which makes the airflow separate from the wing at a lower angle of attack. That means lift for the same speed and angle of attack drops, drag rises, and the wing becomes more prone to an abrupt stall. Ice also adds weight and can alter the wing’s effective shape, further degrading performance.

Because of these effects, flying with icing on the wings is unsafe and generally avoided. The idea that icing has no effect on aerodynamics isn’t accurate—ice alters the lift and stall behavior of the wing. The notions that icing would increase lift or improve stall characteristics run contrary to how wings generate lift and behave under icing conditions.