What affects the thickness of ice accumulation on airplane wings?

The thickness of ice accumulation on airplane wings is significantly influenced by wing thickness because a thicker wing can create differences in airflow and pressure over the wing's surface. This change can affect the way moisture in the air interacts with the wing, potentially resulting in a greater amount of ice forming on a thicker wing structure.

In addition, thicker wings generally have more surface area, which can allow for more collection of supercooled droplets. The aerodynamic characteristics of the wing, including the shape and profile, also contribute to how ice accumulates. Given these factors, the design and thickness of the wing are critical in managing and anticipating ice accumulation during flight in icy conditions.

While other options like aircraft altitude, weight, and flight speed can influence various aspects of flight performance and safety, they do not have the same direct relationship with the thickness of ice accumulation on the wings as wing thickness does. Understanding this relationship is vital for aircraft design and operational safety in conditions where icing is a concern.