Brian Abraham
Holy crap. I just tumbled to the fact you asked about the heli and I gave you Bernoulli.
What a dunce! I hope you forgive my inattention. A picture is forthcoming. The tail boom replacement is not actually a "wing" at all, it is more a "Vane". The length of the tail, and pivoting about its spanwise center line. It grabs a gob of downwash, and I consider it "Vectored Thrust" rather than lift. It articulates through a simple hydraulic ramset that will change its bite through ~60 degrees.
Autorotation is unexplored as yet, Do you have any ideas? I'll cut you in for a percentage!!
bearfoil