BTW, about "Dutch roll"........ It wasn't a roll after all.

Back when the term came about, the story goes........
The guys trying to sort the behavior were first told that the airplane had this funny rolling behavior. So they started off on the crusade to find the answer to rolling behavior. Who'da thunk to look first at the tail. Rolling is a wing thing ain't it. Well, you'd look first at the wing for rolling right?

So after they'd worn out all their pencils, one of them thought to see if maybe the dumb airplane had enough vertical tail and taaa daaaa......

So they found out that it wasn't really a roll problem. And they decided to make light of all the overtime they'd worked on the roll problem by calling the problem, "Dutch roll", as in "Dutch uncle". A Dutch uncle ain't really an uncle, right. And Dutch roll really isn't about roll.