I turned on the tv a few minutes ago to watch a show called Wings over Afghanistan. (Discovery channel) During the opening scenes there was a clip of a full scale Apache heli doing a roll. It was amazingly smooth with little loss of altitude, better than I can do with one of my helis. I had heard they could get inverted but I figured it was only theory, no one had really tried it.
Now I want to see one do a tic-toc!
Later,,,basmntdweller