Just to be clear, we are talking about earth surface here, correct, not space, not in a dome anything like that. I ask this dumb question because every one seems to talking about wind blowing in straight lines, no wind shear, no micro bursts, no down draft.
Why is this different from a straight runway? When a conventionally controlled/configured aircraft is in a constant turn it is a very stable platform, in fact more stable than in straight and level flight.
If you ever owned a Logitech G25/G27 racing wheel, it had a problem going off center by few degrees, making it difficult to use.
so you are saying if you have a bad control system that wont stay in trim correctly then it won't work very well here? Probably find that difficult on a straight runway.
Now imagine hours of level flight, suddenly for few seconds you have to ignore what horizon says and your body feels you have to achieve a perfect touch down.
Horizon tells you what the horizon is, the aim of this is to follow a particular bank angle at a particular speed, like any pilot does for a turn, bank for a standard rate turn. What your body feels? well I'd guess that any pilot who is allowed to fly by them selves should be reasonably capable for a coordinated turn and so the difference in feeling would be <0.1g.
No scope for long landing.
Or in fact infinite scope for a long landing if such conditions arise and are required.
Smith, C., "Flight Operations on a Circular Runway," SAE Technical Paper 660283:
Great information, its a shame people are so closed minded, good job those who count aren't.