Lift per unit span, often denoted as refers to the amount of lift generated by a local airfoil section located at an arbitrary spanwise station, normalized by the wing’s span. It is a measure used in aerodynamics to understand and analyze the distribution of lift along the span of an aircraft’s wing.
- : Lift per unit span, representing the lift generated by the local airfoil section normalized by the wing’s span
- : Density of the free-stream air, typically measured in kilograms per cubic meter ()
- : Freestream velocity (velocity far away from the airfoil), measured in meters per second ()
- : Local chord length at the spanwise station , measured in meters ()
- : Lift coefficient for the local airfoil section at the spanwise station.