What happens to the aerodynamic shape of an aircraft when icing occurs?

When icing occurs on an aircraft, the aerodynamic shape of that aircraft becomes distorted. This distortion is primarily due to the accumulation of ice on critical surfaces such as the wings, tail, and control surfaces. Ice changes the contour of these surfaces, which are designed to create smooth airflow.

As a result of this distortion, the airflow around the aircraft is disrupted, leading to a decrease in lift and an increase in drag. This can have serious implications for the performance of the aircraft, as the altered shape affects how air moves over the wings. The smooth airflow necessary for efficient lift generation is compromised, which can lead to handling difficulties and reduced performance.

Understanding how icing affects the aerodynamic shape is crucial for pilots and aviation meteorologists as it directly influences safety and operational decision-making during flight in icy conditions.