Simulation and Visualization Environment for Nonlinear Helicopter Flight Dynamics

The Analytic 6 D.O.F. dynamic model of a helicopter is developed for 3D computer generated imagery simulator. Analytic expressions for the forces and moments on the various helicopter components are derived. By using the forces and moments equilibrium, helicopter trim point is determined using Newton's method of solving the nonlinear set of trim equations. The equations of motion for the fuselage six degree of freedom are assembled by applying Newton's law of motion relating the applied forces and moments to the resulting translational and rotational acceleration. Visual C⁺⁺ programming software, utilized as a platform will interact to MATLAB Aircraft Instrument ActiveX and 3DSTATE for graphical 3D rendering process.