In flight mechanics, the reference area (S) is a fundamental parameter used to describe the aerodynamic characteristics of an aircraft’s wings. It is a crucial quantity in various aerodynamic equations and performance calculations. The reference area is typically associated with the wings, but it can also be used for other components, such as the horizontal and vertical stabilizers.
S = (b/2) * (Creq + Ct)
Where: S = Total wing area b = Wing span (the distance between the wingtips) Creq = Root chord of the wing (chord length at the wing root) Ct = Tip chord of the wing (chord length at the wing tip)