Okay Pro's, Amateurs,Mechanical heads , Software engineers
Rustie's Flex foil.
This design below is based on the idea to be able to change a Airplane,UAV,Airframe Airfoils in midflight ...yes.
Before I explain for people that want to know this drawing is not a true image of how the real design would look ,work or perform it is mearly a drawing that depics everything on the outside of the wing to make it easier to understand the concept.
If i understand correctly then a big chamber underneath a airfoil creates more lift but also create alot of drag in flight ,that said the Rustie's flex comes into its own as it would solve that problem inflight.
Explained
currently i have this design layed out on a flying wing because one of the requirments for this design to work is a big wing area and as you can see below the wing would be split into 3 hinge parts and in its neutral position would be in conventional airfoil design of your choice but when the servo is energized the foil would change in design with about a inch of movement up or down.
Advantages
Should be able to create more lift on demand on departure or under heavy load and when needed streamline it self at altitude for less drag and more stablized flight.
APM/AP
This feature would be mainly or idealy be controlled by APM/AP the problem is and this is where we need help, Would APM be able to do it automaticaly? the APM needs information to do so and if anyone knows of a sensor or istrument that is capable of measuring drag and lift PLEASE Speak up because this is the whole problem with this design.
Closure Note
I have a design for the mechanical parts to be build inboard but will share that if we can find a way to measure drag and lift, and yes if this work you could use this and get rid of the eleroins or elevators alltogher. This design has not been used in other aircraft before because the mear weight of the aircraft rendered the changes in the wing useless and was abundant but for RC foam planes its a diffrent story.
Advice and comments are welcome and any help is greatly apreciated. 
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