Variable-pitch multi-blade rotor, in particular for the rear ant

Details Variable-pitch multi-blade rotor, in particular for the rear ant Variable-pitch multi-blade rotor, in particular for the rear ant

1992-11-06

1993-10-05

Look, Edward K.

Fluid reaction surfaces (i.e., impellers)

Articulated, resiliently mounted or self-shifting impeller...

Nonmetallic resilient mounting

416136, 416138, 416168R, B64C 1106

Patent

active

052499251

ABSTRACT:
A variable-pitch multi-blade rotor for use as the anti-torque rear rotor of a rotating wing aircraft has a rotor with a central shaft rotated about a central axis, a hub constrained to rotate with the central shaft about the central axis, blades distributed around the central axis with each blade being connected to the central shaft by a twistable element, a pitch control disk for the blades which is constrained to rotate with the central shaft but free to slide axially relative to the central shaft, and a member for controlling the sliding of the pitch control disk along the central shaft. Each blade root is secured to a transverse thrust and pitch control lever forming a yoke having one end hinged to the hub and another end hinged to the pitch control disk.

REFERENCES:
patent: 3006417 (1961-10-01), Busquet
patent: 3594097 (1971-07-01), Moville et al.
patent: 4281966 (1981-08-01), Duret et al.
patent: 4555219 (1985-11-01), Jeffrey et al.
patent: 4626172 (1986-12-01), Moville et al.

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