Efficient multi-propeller helicopter

A sweepback right arm is connected to the right side of the head of a helicopter body, a right inner propeller and a driving motor, a right front undercarriage foot, a right outer first propeller and a driving motor, and a right outer end propeller and a driving motor are sequentially connected to the right arm, and symmetrically, the left side of the head of the helicopter body is connected with a sweepback left arm; the left inner propeller and driving motor, the left nose landing gear foot, the left outer first propeller and driving motor, and the left outer end propeller and driving motor are sequentially connected to the left arm; the right side of the tail of the fuselage is connected with a right tail thrust propeller and a driving motor, and symmetrically, the left side of the tail of the fuselage is connected with a left tail thrust propeller and a driving motor; the tail end of the tail part of the fuselage is connected with the tail end thrust propeller and the driving motor, so that the efficient