Fuel-powered quadrotor unmanned aerial vehicle

The utility model relates to the technical field of unmanned aerial vehicles, and in particular relates to a fuel-powered quadrotor unmanned aerial vehicle. The unmanned aerial vehicle comprises a fuel engine, a transmission mechanism, a braking mechanism and a flight controlling system, wherein the flight controlling system is connected with the fuel engine, the transmission mechanism and the braking mechanism; the fuel engine is used for driving four rotors of the quadrotor unmanned aerial vehicle by virtue of the transmission mechanism to rotate according to a control command of the flight controlling system; the braking mechanism is used for respectively controlling rotation speed of the four rotors according to the control command of the flight controlling system. Compared with the prior art, a fuel engine, instead of batteries, is used as the power of the quadrotor unmanned aerial vehicle, so that the cruising ability of the quadrotor unmanned aerial vehicle is greatly improved; meanwhile, the cost of the quadrotor unmanned aerial vehicle is reduced.