Originally posted by Johng
You could mix them in with elevator. But using them at high speed, you would probably end up ripping the wings off if you don't strip the gears and spiral in. Combining enhanced lifting power with speed is a recipe for structural failure.
The fighters use them at high speed for dog fighting, to increase the amount of G they can pull. But they are stressed accordingly. They are limited by the pilot for the most part, but there are places in the envelope where they need the extra lift to turn.
I have a pal who flys the T-33 in the Canadian Forces (stop laughing please!
) and he told me there are speeds and altitudes where he can out turn an F-18. Simply a question of max lift and wing loading. No matter how much thrust you have, your turn radius is a function of lift, so the LE flaps come in handy.
As for structural failure, it all depends how strong your airframe is. You would be increasing max lift of your wing by maybe 20 or 30%. Chances are you are not using anywhere near the max lift of your wing at high speed, the way we fly models, so there is not much point in doing it I suppose.
A jack screw would reduce servo loads but it would be more work to set up.