[quote]ORIGINAL: bogbeagle
If you reflex the ailerons, you reduce the camber ... you reduce the lift co-efficient ... which means the wing has to fly either faster or at higher A of A to produce the same amount of lift.
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ExactlyYou reduce the lift!!
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How is that going to help you to get into a tight space?
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As I noted in my prior post and any full scale instructor could explain it allows a steeper descent profile while at the same time carrying some power over and above minimum idle that allows for a more precise descent profile utilizing small power changes.
And how come the designers of full-sized planes never thought of that?
Oh my but they have and you need only to look no further than your nearest Full Scale sailplane pilot to be hear of the stories of how it would be almost impossible to land with any degree of precission (that means on the runway without hitting the corn if you will) without the ability to 'Reduce Lift' for the approach. It would be just about impossible to find any modern full scale glider without spoilers. Actually many full scale heavies also do exactly the same but I won,t go there as that's not my area so will leave that for Hoss
Bob you are correct when you stated that reflexing an aileron (or flap or both) changes the airfoils chamber and that is why in the full scale glider world that flaps, ailerons or both can be selectively raised above in trail that is called full chamber control and highly desirable.
HowerverThe simple reflexing just a bit (a most usefull tool) on most of our RC aircraft is not exactly an aerodynamic crime and is not a big disadvantage to speak of in most other areas of flight other than it actually can improve an airplane that has a tendency to tip stall expecially on approach.
John