Which term is the straight line drawn through an airfoil from its leading edge to trailing edge?

Which term is the straight line drawn through an airfoil from its leading edge to trailing edge?

• A. Leading edge
• B. Camber
• C. Relative wind
• D. Chord

Answer: (D)

The straight line connecting an airfoil’s leading edge to its trailing edge is the chord line, and its length is the chord. This line serves as a baseline for describing the wing’s geometry and for measuring angles, such as the angle of attack between the chord line and the relative wind. Leading edge refers to the front boundary of the airfoil, not a line across it. Camber describes the curvature of the airfoil surfaces relative to the chord line. Relative wind is the direction of the airflow over the wing, not a line on the airfoil itself.

The straight line connecting an airfoil’s leading edge to its trailing edge is the chord line, and its length is the chord. This line serves as a baseline for describing the wing’s geometry and for measuring angles, such as the angle of attack between the chord line and the relative wind.

Leading edge refers to the front boundary of the airfoil, not a line across it. Camber describes the curvature of the airfoil surfaces relative to the chord line. Relative wind is the direction of the airflow over the wing, not a line on the airfoil itself.