Private Pilot License (PPL) Aerodynamics Practice Exam

What does the acute angle A represent in aerodynamics?

1. Lift

2. Angle of attack

3. Throttle position

4. Yaw angle

The correct answer is: Angle of attack

In aerodynamics, the acute angle A typically represents the angle of attack. This is a critical measurement because it defines the angle between the chord line of the wing and the oncoming airflow or relative wind. The angle of attack plays a significant role in generating lift; as it increases, lift generally increases up to a certain point, known as the critical angle of attack. Beyond this critical value, airflow separation can occur, resulting in a stall. Understanding the angle of attack is fundamental for pilots, as it helps in recognizing how changes in aircraft pitch or airflow can affect the aircraft's performance during flight. The angle of attack is vital for maintaining control and achieving optimal aerodynamic efficiency.