A tail folding mechanism

A tail folding mechanism (1) comprising:

• a tail (2) located on a helicopter,
• a front region (201) located on the tail (2),
• a rear region (202) connected to the front region (2) in such a way that it can be folded around an axis on which it is supported,
• a first shaft (3) located on the front region (201) and a second shaft (4) located on the rear region (202) enabling power to be transmitted to a tail rotor during flight movement of the helicopter,
• a first coupling (5) and a second coupling (6) located on the first shaft (3) both with a threaded form,
• a first hub (7) located on the first shaft (3) and surrounding the first coupling (5) all around, the first hub (7) form-fitting to the first coupling (5) so as to enable the first coupling (5) to make at least a partial spherical rotational movement,
• a second hub (8) located on the second shaft (4) so as to be arranged opposite the second coupling (6) and being form-fitting to the second coupling (6),
• a dampener (9) located on the front region,
• an active mode (A) in which power is transmitted from the first shaft (3) to the second shaft (4) by placement of the second coupling (6) in the second hub (8),
• a passive mode (P) in which power transmission from the first shaft (3) to the second shaft (4) is interrupted when the second coupling (6) is decoupled from the second hub (8) by folding movement of the rear region (202), wherein the dampener (9) is located in the first shaft (3) so as to be in contact with the first hub (7), and enabling the movement of the first hub (7) into the first shaft (3) to be at least partially dampened, thereby damping linear movement of the first hub (7) while it is switched from the passive mode (P) to the active mode (A).