In rigging, what does the term "chord line" refer to?

The term "chord line" refers to an imaginary straight line that connects the leading edge and the trailing edge of a wing. This line is essential in aerodynamics as it helps define the wing's shape and contributes to various calculations, including lift and drag. The chord line serves as a baseline for determining the angle of attack, which is the angle between the chord line and the oncoming airflow. Understanding the chord line is crucial for rigging and overall flight dynamics, as it relates to the wing's performance and stability.

The other options describe different aspects of wing design or flight characteristics but do not accurately represent the definition of the chord line. The distance from the leading edge to the trailing edge specifies the length of the chord but does not define the chord line itself. The curved path of a wing during flight refers to its trajectory rather than its linear chord line. Lastly, the angle of incidence pertains to the angle the wing is mounted relative to the horizontal plane and is distinct from the concept of a chord line.