Abstract: Loitering munition can be launched by various platforms. However, due to the impact of the delivery platform, the initial launching status of the missile-borne aircraft is uncertain. The leveled stage of missile-borne aircraft is different from other traditional flight modes. For this particular process, the dynamic model in leveled stage was established. Reliable aerodynamic parameters were obtained by Fluent's simulation method. Based on Simulink, the flight simulation module and control strategy in leveled stage were designed. Simulink-FlightGear method was used to display the real-time flight state. Through the simulation, flight characteristics in leveled stage are achieved, such as, motion parameters converging slowly and a certain height loss. This study is significant for a variety of missile-borne aircraft delivery platforms to analyze their initial state and research the control algorithm.

Key words: loitering munition, leveled stage modeling, Simulink-FlightGear, flight visual simulation