FIELD: aviation.
SUBSTANCE: invention relates to aircraft engineering, particularly, to rotorcraft tail rotor designs. Tail rotor head of rotorcraft comprises pitch control unit and tail rotor hub (8), multiple holders (6) of tail rotor blades that can be connected. Tail rotor blade (2) is detachably connected to the first side of the tail rotor blade holder (6). Tension and torsion bar is installed in a detachable manner on the second side of holder (6) of the tail rotor blade and passes from head (3) of the tail rotor through holder (6) of the tail rotor blade radially outwards towards blade (2) of the tail rotor. Blade holder (6) comprises retaining plate part (60) and moulded as an integral part of retaining blade part (61). Tensile and torsional plate is fixed in tubular plate-retaining part (60) by means of plate-retaining bolt (601) with one connecting eye in connecting hole (600).
EFFECT: easy replacement of separate rotor blades and simplified maintenance of tail rotor head.
13 cl, 7 dwg
