A universal propeller, comprising a hub that is rotatably mounted on a shaft, wherein, on the hub, - there are two rotor blades arranged opposite one another or - at least three rotor blades arranged in a star configuration with respect to one another, - wherein on the hub each rotor blade is arranged, at the end of its longitudinal axis, at an angle α with respect to the central axis of the shaft in such a way that the longitudinal axis of each rotor blade when rotating through 360° describes the peripheral surface of a right circular cone, - wherein the hub comprises a timing gear enabling the rotor blades to be rotated about their longitudinal axis; - wherein arranged on each rotor blade there is a gearwheel that is directly operatively connected to a reference gearwheel of the timing gear; - and wherein the timing gear is operatively connected to a hub gear, wherein the hub gear is configured to sense and process an angular velocity ω n of a rotational movement of the hub; characterized in - that the reference gearwheel is arranged centrally in the timing gear and surrounded by the gearwheels of the rotor blades, and the reference gearwheel and the gearwheels of the rotor blades of the timing gear are designed in such a way that the ratio of an angular velocity ω r of the reference gearwheel to the angular velocity ω n of the rotational movement of the hub is as follows: ω r / ω n = 1 + (1/2)*(S rot / S r), where S rot = size of the gearwheels of the rotor blades, and S r = size of the reference gearwheel; or - that the reference gearwheel is arranged outside the center of the timing gear and in turn surrounds the gearwheels of the rotor blades, and the reference gearwheel and the gearwheels of the rotor blades of the timing gear are designed in such a way that the ratio of an angular velocity ω r of the reference gearwheel to the angular velocity ω n of the rotational movement of the hub is as follows: ω r / ω n = 1 - (1/2)*(S rot / S r), where S rot = size of the gearwheels of the rotor blades, and S r = size of the reference gearwheel. - there are two rotor blades arranged opposite one another or - at least three rotor blades arranged in a star configuration with respect to one another, - wherein on the hub each rotor blade is arranged, at the end of its longitudinal axis, at an angle α with respect to the central axis of the shaft in such a way that the longitudinal axis of each rotor blade when rotating through 360° describes the peripheral surface of a right circular cone, - wherein the hub comprises a timing gear enabling the rotor blades to be rotated about their longitudinal axis; - wherein arranged on each rotor blade there is a gearwheel that is directly operatively connected to a reference gearwheel of the timing gear; - and wherein the timing gear is operatively connected to a hub gear, wherein the hub gear is configured to sense and process an angular velocity ω n of a rotational movement of the hub; characterized in - that the reference gearwheel is arranged centrally in the timing gear and surrounded by the gearwheels of the rotor blades, and the reference gearwheel and the gearwheels of the rotor blades of the timing gear are designed in such a way that the ratio of an angular velocity ω r of the reference gearwheel to the angular velocity ω n of the rotational movement of the hub is as follows: ω r / ω n = 1 + (1/2)*(S rot / S r), where S rot = size of the gearwheels of the rotor blades, and S r = size of the reference gearwheel; or - that the reference gearwheel is arranged outside the center of the timing gear and in turn surrounds the gearwheels of the rotor blades, and the reference gearwheel and the gearwheels of the rotor blades of the timing gear are designed in such a way that the ratio of an angular velocity ω r of the reference gearwheel to the angular velocity ω n of the rotational movement of the hub is as follows: ω r / ω n = 1 - (1/2)*(S rot / S r), where S rot = size of the gearwheels of the rotor blades, and S r = size of the reference gearwheel.