In this study, a controller system to stabilize the direction of an aerial delivery system with Ram-Air Parachute is developed. First, a simulation platform is prepared in Matlab, Simulink. Simulink 6DOF vehicle model is used for simulations. The aerodynamic forces and moments on the vehicle are mathematically modelled and implemented. Control algorithms for regulation of yaw, yaw rate and descent rate are developed and tested. The roll rate and pitch rate are observed parameters to examine the flight stability.