Object-oriented method for modeling six-degree-of-freedom simulation system of aerocraft

In order to improve the efficiency, reliability, maintenance ability and expansibility of modeling, the object-oriented method for modeling the 6-DOF (six-degree-of-freedom) simulation system of aero craft is proposed in this paper. UML (Unified Modeling Language) is adopted to model the system. Firstly, from users' view, we analyzed the basic requirements of the simulation system and modeled it by use case diagram. Secondly, from the view of system realization the classes and their relationships are designed. The main events and activities were modeled by sequence diagram simultaneously. Finally, taking the hardware realization into account we established deployment diagram of the system. The simulation result of the trajectory shaping guidance shows that the time consuming of simulation is decreased while guaranteeing the identical of the result. At the same time, the portability, security, reusability, maintainability and modeling efficiency of the simulation system is upgraded.