AIRCRAFT SUBSYSTEMS DATA/MODELS

Aircraft consists of several systems that require mathematical models if full dynamic simulation is needed: aircraft flight mechanics, actuation system, sensors, engine, navigation, landing gears, and control system. In addition, the environment and display systems are important. The mathematical models of these subsystems are supposed to be known and the fidelity of simulation depends on how close these mathematical models are to the actual subsystems (dynamics) [1]. In general certain important modeling aspects have been addressed in Chapters 2 through 5 and Chapter 9. For flight-dynamics simulation, the model structure, the EOM, and the aerodynamic derivatives (often the knowledge of aerodynamic coefficients is enough) are assumed known. The HW/SW configuration should be strictly main­tained for faithful reproduction of flight trials/conditions and repeatability of the various simulated tasks performed. Since several HW/SW modules need be inter­connected and integrated to realize the flight simulator’s functioning, it is important not only to test individual subsystems and modules for their accurate functioning, but also to see that the tasks performed by these modules are properly synchronized in time and sequence of operation. In addition to these subsystems, logic circuits, radio aids, and navigation-related components/SW are needed to realize high-fidelity and full-fledged flight simulators.