Features: 1. The participation of BuAA reading master makes the RC models first try the professional aerodynamics and the air flow field analysis, the stron theoretical foundation greatly shortened the product development cycle. 2. FMS first thermal design, without affecting the efficiency of the case to ensure that the motor any play, do not worry about the motor heating lead to life, performance affected; 3. Reasonable structure designm can arbitrarily choose diffferent manufacturers motors, this item can be assembled to all the 90 ducted airplanes, no need to make too much manual changes to the aircraft.