Hybrid unmanned aerial vehicle

PURPOSE: A hybrid unmanned aerial vehicle is provided to variously manage flying by controlling the height of a quadrotor based on the position of a ducted fan. CONSTITUTION: A hybrid unmanned aerial vehicle (100) comprises a body (10), a ducted fan (20), an engine (30), multiple branch frames (40), motors (50), and quadrotors (60). The ducted fan is located inside of the body. The engine is located on the center top of the body and is connected to the ducted fan through a shaft to power the ducted fan. One end of each branch frame is connected to the outer surface of the body. The motors are installed on the other ends of the branch frames. The quadrotors are rotated by the motor and generate driving force.