HELICOPTER TAIL ROTOR Russian patent published in 2023 - IPC B64C27/82 B64C11/32 B64C27/54 

FIELD: aircraft.

SUBSTANCE: tail rotor (4) for a helicopter (1) is described), comprising: a column (6) rotated around the first axis (A); a group of blades (8) hinged on the column (6), extending along the respective second axes (B), transverse to said first axis (A), and rotated around the respective said second axes (B) to change the respective angles of attack; a control element (16) sliding and rotating in relation to the column (6) and operatively connected to said blades (8) to cause rotation of said blades (8) around the respective second axes (B) following the movement of the said element (16) along the first axles (A); a control rod (10) sliding in the axial direction along the first axis (A) in relation to the column (6) and obliquely fixed in relation to the first axis (A); and a connecting element (17) located between the control rod (10) and the control element (16), sliding along the first axis (A) in relation to the column (6) and representing one piece with the control rod (10); the tail rotor (4) additionally comprises a layer (18, 93) made of anti-friction material, located between the specified control rod (10) and the specified connecting element (17).

EFFECT: improved performance.

16 cl, 6 dwg