FCD-20 VTOL Composite Wing UAV is an electric long endurance UAV independently developed by our company. It adopts the overall layout of compound wing combined with fixed wing and quadrotor, and solves the problem of vertical takeoff and landing of fixed-wing UAV in a simple and reliable way. It has the characteristics of long endurance, high speed and long distance of fixed-wing UAV and the function of VTOL of rotary-wing UAV. The VTOL mode greatly enhances the adaptability of the UAV to various environments and can achieve smooth operations in complex terrains, weathers and gathering areas such as mountains, hills, jungles and sea.