What is the definition of "stalling angle" in aircraft flight?

The stalling angle, often referred to as the angle of attack at which airflow detachment occurs, is crucial for understanding aircraft performance and safety. At this specific angle, the smooth airflow over the wing surface begins to separate, leading to a significant decrease in lift. This phenomenon occurs because the wing reaches its critical angle of attack, beyond which it cannot generate enough lift to maintain level flight or perform maneuvers safely. Recognizing this angle is vital for pilots to avoid stalling during flight operations, as it directly impacts the aircraft's controllability and performance. Understanding that the stalling angle is tied to airflow behavior provides essential insight into flight dynamics and aerodynamics, which are foundational concepts in aviation training.