Originally Posted by
samtheman
so basically the increase in speed is not proportional to the increase in costs?
Or the other way around. Actually it is, just that it's not linear but more likely geometric (X% increase in speed results in Y % increase in costs where Y > X)
maybe with a few decades of research this won't be true anymore. at least im hoping so.
Probably defying some law of physics for atmospheric flight. Going suborbital and avoiding air friction travelling through the atmosphere is the best bet.