I'm a bit involved into building an actual airplane. And while the guys go conventional ways, I'm trying to look around to see other solutions.
One of that is to try and use and RC scale-down model (easier and cheaper to build) to test and find flaws in the design and also possibly to give pilots some training before flying the actual plane.
So the question is - what will and what will not be similar in a model's behavior (say 90 cm and 180 cm wingspan versions) compared to full scale airplane (about 9m wingspan). I've already found answers related to Reynolds number on Physics SE, so it seems aerodynamics test (if we do any on the model) should be run in a pressurized tube. It's also obvious that power-to-weight ration in a model will be much higher, but possibly that can be solved by depowering the engine.
So if I build a 1:10 or 1:5 scale RC model, will it in some way be useful for actual aircraft design, building and pilot training?