ChristiaanJ
As to all these discussions about a detached V/S behaving even vaguely like a wing.... anybody here made up a model with about the same shape and roughly the same mass distribution and tossed it off a 10-story building? If not, why not? It would give you some real ideas about the weird and wonderful things a shape like that can do when falling through the air.
Hi ChristiaanJ, Yes did the experiment with a piece cut from paper small enough to not significantly distort from the Q loads. Reynolds number is way low of course, but it did just what I expected and fluttered down like a leaf. I really don't think there are any stable non-rotating modes for a single surface with relatively uniform mass distribution.