Ok, but now you have an airport that takes 2-4 times as much space as normal ones. Airports already consume an incredible amount of space; most places don't ha

Ok, but now you have an airport that takes 2-4 times as much space as normal ones. Airports already consume an incredible amount of space; most places don't have that much space to spare. This reminds me of someone's crazy proposal not too long ago (I think it showed up on this site) to make an airport with a big circular runway around it, with the idea that planes could be continuously taking off and landing. It didn't take long for some pilots to chime and and call the whole idea utterly insane and stupid because it's incredibly dangerous to take off or land while turning.