Electrically driven helicopter tail rotor transmission system

The invention belongs to the field of aircraft design, and relates to an electrically driven helicopter tail rotor transmission system in aircraft design. The system comprises a motor, a motor power source, and a control system; the motor at the tail of a helicopter is connected with a helicopter tail rotor; the motor is the power source of the helicopter tail rotor; the control system controls the rotating speed of the helicopter tail rotor. The electrically driven helicopter tail rotor transmission system of the invention substitutes electrically driven transmission for mechanical transmission, substitutes for a traditional tail rotor pitch link mechanism by changing the tail rotor rotating speed, reduces the structure weight, improves the energy utilization rate of the motor, improves the assembly maintainability of the tail rotor transmission system, reduces the noise and vibration level of the whole helicopter, and has great practical application value.