Cross beam rotor

Details Cross beam rotor Cross beam rotor

1979-08-01

1981-08-18

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

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

Plural articulation

416134A, 416138, B64C 2738

Patent

active

RE0307130

ABSTRACT:
A helicopter rotor having opposed blades interconnected by a common flexible spar which passes across the rotor axis is connected to the drive shaft by clamped hub plates. A spanwise extending torque tube having a pitch horn at its inner end forms a rigid connection with the spar and blade at its outboard end. A centering bearing assembly is positioned at the inner end of the torque tube and spar to react control loads, centralize the torque tube about the spar, and provide pitch, flap, and lead-lag decoupling.

REFERENCES:
patent: 2949967 (1960-08-01), Jovanovich
patent: 3470962 (1969-10-01), Cure
patent: 3484174 (1969-12-01), McCoubry
patent: 3501250 (1970-03-01), Mosinskis
patent: 3669566 (1972-06-01), Bourquardez et al.
patent: 3874815 (1975-04-01), Baskin
patent: 3880551 (1975-04-01), Kisovec
patent: 3926536 (1975-12-01), Ciastula et al.
patent: 3999886 (1976-12-01), Ormiston et al.
patent: 4008980 (1977-02-01), Noehren et al.
patent: 4087203 (1978-05-01), Ferris

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