Tandem type oil-electric hybrid unmanned aerial vehicle

The invention provides a tandem type oil-electric hybrid unmanned aerial vehicle. The oil-electric hybrid unmanned aerial vehicle comprises a vehicle body, a plurality of electric motors, a plurality of propellers, a fuel oil engine, an alternator, a rectifier, a battery, an accelerator servo and a control circuit, wherein the control circuit detects the electric quantity and charge-discharge status of the battery in real time and controls the rotating speed of the fuel oil engine in a closed manner, thereby controlling the electric quantity of the battery. The tandem type oil-electric hybrid unmanned aerial vehicle has high cruising ability, flies stably and can be applied to remote pipeline patrol and electric line patrol, small-scale express delivery, emergency and relief work which requires high-density takeoff and landing, large-area plant protection operation, long-time unmanned hang photographing, air surveillance, emergency locale information feedback and the like.