edible, sorry but you are quite incorrect in your statements. You're points as to why full scale's aren't hovering are completely invalid, especially when you're talking about the turbo raven.

The turbo raven wasn't built to be as aerobatic as Sean Tucker's pitts, Jim LeRoy's pitts, Kirby's Edge, etc... It was built for one soul purpose, to climb REALLY fast. With it's reversable pitch props (which most all turbo props have), it could also descend at an incredibly steep angle with a low airspeed. This also caused the airplane to pancake after the propeller manfunctioned and got jammed in reverse pitch. It would be very impractical for any turbine powered airplane to hover, especially for cooling reasons.

The only planes that are hovering, are reciprocating engine powered. You need quite a bit more than 1:1 ratio to pull out of a hover, it takes alot of power to get all of that weight moving again. You must remember full scale is nothing like r/c when it comes to things like this. The main problem for reciprocating powered planes as far as hovering goes is cylinder head temps. Jim LeRoy can hover for about 10 seconds or so as he watches his CHT's go all the way to redlike, then he pushes out and let's his engine cool down.

BTW, most every high performance aerobatic airplane out there has "variable pitch props" technically known as constant speed props. The RPM is maintained around 2,700 or so and all the pilot has to control is the throttle, the prop governer does the rest. I wouldn't expect anyone hovering near ground, much less backing the airplane down to the ground like a model until something VERY innovative comes out for a propulsion system.