What term describes the angle between the wing's chord line and the relative wind?

What term describes the angle between the wing's chord line and the relative wind?

• A. Angle of Attack (AOA)
• B. Bank angle
• C. Yaw angle
• D. Drag angle

Answer: (A)

The angle of attack is the measure you’re looking for. It’s the angle between the wing’s chord line (a straight line from the wing’s leading edge to its trailing edge) and the relative wind—the direction the air is moving as the airplane flies. This angle controls how much lift the wing generates: increasing the angle of attack typically increases lift (up to a critical limit). Once you exceed that critical angle, the airflow can no longer follow the wing smoothly, and lift drops off as the wing stalls. That’s why pilots watch and manage angle of attack through pitch and airspeed to stay in a safe, efficient range. The other terms describe different things: bank angle is the wing’s tilt in roll, yaw angle is rotation around the vertical axis, and the idea of a drag angle isn’t a standard aerodynamic term—drag is the force opposite the motion, not an angle to the wind.

The angle of attack is the measure you’re looking for. It’s the angle between the wing’s chord line (a straight line from the wing’s leading edge to its trailing edge) and the relative wind—the direction the air is moving as the airplane flies. This angle controls how much lift the wing generates: increasing the angle of attack typically increases lift (up to a critical limit). Once you exceed that critical angle, the airflow can no longer follow the wing smoothly, and lift drops off as the wing stalls. That’s why pilots watch and manage angle of attack through pitch and airspeed to stay in a safe, efficient range. The other terms describe different things: bank angle is the wing’s tilt in roll, yaw angle is rotation around the vertical axis, and the idea of a drag angle isn’t a standard aerodynamic term—drag is the force opposite the motion, not an angle to the wind.