| 摘要 |
<p>A tail rotor (8) for a rotary wing aircraft is located in a laterally direct duct (9) located at the end of a tail cone (7) extending rearward from the aircraft cabin and at the base of an empennage (5) extending upward from the duct (9). The rotor includes a rotor shaft (78) driveably connected to a power source, a rotor hub (10) connected to the rotor shaft (78), a rotating control shaft (64), a stationary control shaft (118), and an actuator (126) connected to the stationary control shaft (118) for moving the rotating control shaft (64) axially. The rotor hub (10) includes rotor arms (12) each supporting a pitch shaft (16) for pivotable movement about a pitch axis (B). Each pitch shaft (16) is adapted to support a rotor blade (14) so that its angle of attack changes with movement of the pitch shafts. A pitch beam (54), located adjacent the rotor hub, supports flexure members (48), each connected to a pitch shaft eccentric of its pitch axis. The flexures (48) driveably connect the pitch shafts to the pitch beam (54) and transmit pitch control motion to the pitch shafts as the pitch beam moves along the rotor axis due to actuator input.</p> |
