The coefficient of lift-to-drag ratio, often denoted as cl, is a dimensionless parameter used in aerodynamics to assess the efficiency of an airfoil, wing, or aircraft. It represents the ratio of the coefficient of lift (cl) to the coefficient of drag (cd) and provides insights into how effectively an aircraft generates lift relative to the drag it experiences.
- Coefficient of lift to drag ratio (cl/cd)
- Angle of attack (𝛼) in rad
- Zero lift drag coefficient (cd,0)