HELICOPTER TAIL ROTOR Russian patent published in 2023 - IPC B64C27/78 B64C27/82 

FIELD: aviation.

SUBSTANCE: designs of helicopters with a single rotor. The tail rotor (4, 4') contains a main rotor shaft (6) rotating around the first axis (A), a group of blades (8) continuing along the respective second axes (B), a control element (16) sliding along the axis (A), a control rod (10) sliding along the axis (A) and fixed at an angle relative to the specified first axis (A), a connecting element (17) placed between the control rod (10) and the control element (16), and a block (45) transmission available in active configuration or inactive configuration. The control element (16) is configured to rotate with the main rotor shaft (6) and is connected to the blade (8). The connecting element slides along the axis (A) in one piece with the control rod (10) and is configured to allow relative rotation of the specified control element (16) relative to the control rod (10) around the axis (A). The transmission block (45) contains an annular protrusion (61) and a socket (64), engaged with the protrusion (61), at an angle made in one piece with the control element (16).

EFFECT: timely detection of a malfunction of the antifriction bearing, correct control of the tail rotor in the event of a malfunction of the antifriction bearing.

18 cl, 6 dwg