TooFuzzy, That's a looonnngggg Plane!
Turning a 3000 m long structure around, reaching a peripheral speed of 500 mile/h will, give or take a bit, an average speed of 250 m/h. The trip from LA to new York wil take about 19 hrs! That's what you call just turning it around?
Think of the energy that will be lost due air friction at low altitude! Think of the energy that will be lost in mechanical friction(a flywheel would help). I would love to sell the ball bearings in the pivot that will be needed.
Conrad