Originally Posted by
Humanfit
If the earth is an inside sphere as you are proposing, you have a similar problem as regular sphere in aviation in that you would constantly have to correct for altitude.
A plane moving at 600 mph would travel 1 mile every 6 seconds. This is a curvature drop/rise of 8 inches over a distance of 63,360 inches or an angle adjustment of .007 degrees. Now to get an idea how big this angle adjustment is, take out a protractor and make a marking about 8 microns up. Good luck with that though since it's 5 times smaller than the human eye is even capable of seeing xD
So in other words it's insignificant.
Even if it were significant- say 100 feet per mile- the different in air density would be enough to change the lift on the wings to reach equilibrium. You would be entering denser air which applies more upward force upon the wings.
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