Rotor and aircraft passively stable in hover

The invention claims a rotary, wherein the induction lifting, comprising at least two rotary blades and with the central shaft about the vertical rotary shaft; the rotor are extended from the rotating shaft outwards and stop of the top; the rotary comprising a rotary surface of the upper angle, wherein the section of the rotor drives of each rotating blade is process; the rotary surface to the vertical inclines in any direction of the reference surface of rotary axis; at least one part of one or more rotating blade with the reference surface formed fixing spiral angle; at least one part of one or more rotating blade with the rotaryPlane formed fixing spiral angle. Moreover, the invention also claims a aircraft passive stable method according to the internal ring.