Lift due curvature of the earth?
Hi,
There is a lot jokes that Russian airplanes use this to get airborne but how does it really effects lift? According my calculations: Schuler period is 84min, lets say jet airplane can go around the world in 40 hours. 1.4/40*100 we get around 3.5% of the lift generated by the curvature of the earth. Is that true? If so is it taken into account calculating lift of the airplanes in cruise?