When a rectangular wing stalls, what is the primary risk associated with it?

When a rectangular wing stalls, the primary risk associated with it is a loss of control. A stall occurs when the airflow separates from the upper surface of the wing, resulting in a significant decrease in lift. This condition leads to a situation where the aircraft can no longer maintain controlled flight, making recovery challenging.

The characteristics of a rectangular wing, which typically has a higher aspect ratio, mean that the stall can occur more abruptly and can cause the aircraft to enter uncontrolled flight more easily than wings with different designs. Pilots must be particularly aware of the stall characteristics of their aircraft and the behavior of the wing at or near its critical angle of attack.

While increased drag and structural failure are concerns in other contexts, they are not the immediate operational risks during a stall situation. Excess weight, while a general concern for aircraft performance, does not directly correlate with the specific consequences of a wing stall, which primarily affects control and stability.