Fire-fighting single-rotor-wing hybrid power unmanned helicopter and use method

The invention discloses a fire-fighting single-rotor hybrid power unmanned helicopter and a use method. The unmanned helicopter comprises a helicopter body, a power mechanism, an air supply system, a fire-fighting equipment module, a tail rotor and a landing gear, the helicopter body is used for fixedly installing the power mechanism, the air supply system, the fire fighting equipment module, the tail rotor, the landing gear and the control system, and the control system is in wireless communication with the remote control terminal; the power mechanism comprises an engine and a motor which are coaxially connected and jointly used for power output. The gas supply system detects the oxygen amount of inlet gas and the oxygen amount of exhaust gas of an engine in real time and monitors the current and the rotating speed of a motor in real time. The fire-fighting equipment module is used for executing fire-fighting fire-extinguishing tasks and projecting fire-extinguishing materials; the tail rotor is used for bal