Originally Posted by
rigpiggy
like this???
No, according to the link below (mentioned up in the Rotorheads forum here), it's "a tail rotor that could articulate 90 degrees in order to provide forward thrust during level flight." So you'd get a transition back and forth from standard TR anti-torque to pusher prop:
Boeing Is Testing A New High-Speed Derivative Of Its Apache Gunship - The Drive
Interesting idea if that's what it is, but I wonder how much weight a complex articulating tail like that would add, and how you'd balance the C.G.. Maybe just make the boom shorter, if it's more powerful than a standard tail rotor?