Span efficiency Factor Post author:naveenaneeradhadas Post published:May 22, 2021 Post category:Aerospace Calculator / Aircraft Design / Engineering Calculator The span efficiency is a correction factor that represents the change in drag with lift of a three-dimensional wing or airplane, as compared with an ideal wing having the same aspect ratio and an elliptical lift distribution. Tags: Span efficiency You Might Also Like Ram Drag Of a Jet Engine April 29, 2021 Sutherland formula Temperature viscosity relation (kelvin scale) December 11, 2020 Deflection of a Fixed Beam With Uniformly Distributed Load September 6, 2021