What is the main function of de-icing boots?

The main function of de-icing boots is to crack and shed ice from the wings and tail of an aircraft. De-icing boots are inflatable rubber membranes installed on the leading edges of wings and other critical surfaces. When activated, these boots inflate and cause the ice that has accumulated on the surface to crack. This cracking allows the ice to then be shed due to the airflow over the wings and tail, restoring the aerodynamic performance of the aircraft.

This process is crucial because ice buildup can significantly affect lift, control, and performance during flight. Maintaining a clean airfoil surface is essential for safe aircraft operation in icing conditions, and the functionality of de-icing boots is designed specifically to address this issue. Other options, such as providing traction on icy surfaces, insulating the aircraft from cold, or enhancing fuel efficiency, do not relate to the primary role of de-icing boots, which is focused solely on ice removal to maintain aerodynamic effectiveness.