Abstract
Nowadays Unmanned Aircraft Vehicle (UAV) technology has been developed rapidly, including in Indonesia. LAPAN Surveillance UAV (LSU)-02 is one of the fixed-wing UAVs in Indonesia. It has been developed by LAPAN, the national aerospace research agency of Indonesia, for mapping and surveillance. The UAV has been equipped with automatic flight control system. However, the automatic system was not made based on the flight dynamic characteristic of the UAV. Therefore, optimization in certain flight condition becomes difficult. Hence, the aim of this research is to develop a mathematical model of LSU-02 for automatic control and guidance system design. A 6-DOF (degree of freedom) non-linear mathematical model was build based on aerodynamics, weight and balance, and propulsion of the UAV. The model is then evaluated by performing numerical simulation on the designed cruise condition. The simulation results show a dynamically stable characteristics for longitudinal motion and an unstable characteristic for lateral-directional motion.
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