The Rutan brothers are brilliant pioneers.

"Rutan was the innovator of controlling wingtip vortices and converting that wasted force into lift. Not much of a tip vortex on a paper plane.

BTW, the tip vortex is from high pressure air under the wing spilling out toward the top of the wing, not vice versa. "

True

"I flew into a tip vortex coming from a C-130 while on final approach to Huntsville AL. It flipped my Cheetah completely inverted in a right roll in less than a second but I instinctively added full right aileron to complete the roll and landed uneventfully. Took 10 minutes to get my underwear out of my tush.[/QUOTE]"

Inverted on final is NOT my favorite position. I think I would have instinctively fought it with Left aileron. Are you aerobatically trained?


...(music).."Up side down, you're turning me.."