Software systems and implementation of flight simulator

This paper presents that the required theory its and program techniques to implement a flight simulator in PC. There are four main modules in the flight simulator. They are input module, output module, flight dynamic module, and control module. In flight dynamic module, in order to solve the nonlinear six degrees aircraft governing equations, we introduce the Runge-Kutta numerical method and quarterion. The required initial values for simulator are mentioned in input module. File output, sound output and animation are developed in output module. We simulate the sceneries outside the cockpit by frame animation and the flight state variable responses and control surface responses are created by bitblt animation. In control module, the utilization of gain scheduling control, the analyses of flight performance and trim flight conditions are all explored. System integral, interruption skill and the option menu subroutine are also discussed in this paper.