Crab "So why postulate that there is an ultimate coning angle? Do designers use it? No. Could or would pilots use it? No. Do engineers consider it? No."
If they don't they should, and i think most do, if there are any that don't don't even go there of course there aren't ANY designers that don't get that idea and its importance
the danger is that helicopters will be designed according to criteria that regulators understand/mandate and they definately don't understand THAT.
Nick can you speak with SKSY designers, what Coning angle to they aim to accommodate?