What does the Angle of Attack (AOA) signify in aerodynamics?

The Angle of Attack (AOA) refers to the degree to which the leading edge of an airfoil, such as a wing, is inclined relative to the oncoming airflow. This angle plays a critical role in determining the lift generated by the wing; as the AOA increases, so does lift, up to a certain point known as the critical angle of attack. Beyond this point, the airflow starts to separate from the wing's surface, which can lead to stall conditions.

Understanding AOA is key for ensuring safe and effective flight as it directly impacts the aircraft’s performance and handling characteristics. It is a fundamental concept in aerodynamics that every pilot must grasp to manage flight operations appropriately.