Le mardi 16 février 2016 15:24:00 UTC+1, Bruce Hoult a écrit*:

If you can get, say, 1% of your lift from the fuselage without increasing the drag of the fuselage, then decreasing the lift needed from the wings by that 1% will decrease the induced drag from the wings by about the same 1%.

Absolutely correct, but deconnected from reality. Just because a function runs through a minimum, it's not a given that slight deviations from the minimum on the x-axis yield only slight variations on the y-axis.

But again, do what you like ;-)