What is a stall in aerodynamics?

A stall in aerodynamics occurs when an aircraft exceeds its critical angle of attack, resulting in a significant decrease in lift. This phenomenon is critical for pilots to understand, as it happens when the airflow over the wings separates, disrupting the smooth flow necessary for generating lift.

When an aircraft is flown at angles of attack greater than the critical point, the airflow can no longer adhere to the wing's surface, which leads to a dramatic reduction in lift. This means that while an increase in angle of attack typically enhances lift, beyond a certain angle, further increases will actually reduce lift, leading to a stall condition. Therefore, understanding this concept is fundamental for safe aircraft operation and recovery from a stall, as it emphasizes the importance of maintaining the angle of attack within safe limits during flight.