Rotorcraft having an electric drive for driving a main and/or tail rotor of the rotorcraft

A rotorcraft with a hybrid drive, comprising at least one electric drive for driving a main rotor of the rotorcraft and a second drive designed as a thermodynamic engine, wherein the at least one electric drive comprises:

• means for coupling the at least one electric drive with a rotor mast, which is couplable rotationally fixed with a drive unit of a rotor transmission, for the rotationally fixed coupling with the main rotor, wherein the at least one electric drive is designed as at least one electric ring motor, and wherein the at least one electric ring motor is arranged and attached coaxially with the rotor mast,
• wherein the at least one electric drive is designed as an electric ring motor with an inner rotor functioning as a rotor, wherein the inner rotor is fixedly connectable directly to the rotor mast;
• wherein the rotor mast is designed in two parts and comprises a bearing mast and an outer mast, wherein the outer mast is designed as a hollow body mounted rotatable about a central axis relative to the bearing mast, concentrically surrounding the bearing mast, and wherein the outer mast is operatively connectable to the rotor transmission, wherein the bearing mast is mountable in a fixed position and rotationally fixed in the rotorcraft, so that the outer mast is coupled rotationally fixed to the rotor and is settable in rotation with the rotor transmission;
• and
• wherein the inner rotor is fixedly connected to the outer mast.