The invention relates to a flying device which can efficiently move in the air by aerodynamic forces and by direct force transmission on the ground, without the need for independent drive and thrust generation systems for the two modes of movement. The rotors (1) of the flying device are provided on the outside thereof with an annular rotating covering (4), connected directly to the rotor blade tips, which, when the flying device is on the ground and the rotor rotational axes (2) are correspondingly pitched about an axis (3), come into contact with the ground. The covering (4) hence permits a movement of the flying device on the ground by rolling, which is based on a direct force transfer to the ground. A further rotor pitching axis (5) permits the flying device to be controlled in the air and on the ground by means of the same actuator system. The above flying principle permits, for example, remote controlled reconnaissance drones for close or remote espionage, to independently enter inaccessible regions, or in the context of police or military application in buildings presenting danger for personnel, to gain access to upper floors.