Graupner, I understand your point and I agree that sim experience can help considerably before attempting the real model. The question at hand was not about that but if one can duplicate the exact flying characterstics of a model on the sim. The answer is no, even on real scale aircraft its impossible to duplicate using millions of dollars of sim hardware and software. It can be very close that common flight scenarios behave practically identical but never acurate enough that the design is proven. Thats why we have test pilots!