Self-rotating empennage device applied to aircraft and aircraft

The invention discloses a self-rotating empennage device applied to an aircraft and the aircraft, and belongs to the technical field of high-speed flight equipment.The self-rotating empennage device comprises a rotating empennage and a mounting cylinder with a spraying pipe on the rear portion, the rotating empennage comprises a cylinder body and a plurality of empennages, and the empennages are evenly distributed outside the cylinder body; the barrel is arranged on the outer side of the spray pipe and rotationally matched with the spray pipe through a rotating part; the aircraft comprises a projectile body and a self-rotating empennage device at the rear end of the projectile body, a rotating empennage can freely rotate around the longitudinal axis of the flying projectile body, rolling torque generated through induction on the rotating empennage is decoupled from the flying projectile body, the purpose of controllable rolling is achieved, and the rolling torque on the empennage can be prevented from being t