Main rotor for a helicopter

Details Main rotor for a helicopter Main rotor for a helicopter

1978-07-10

1981-06-16

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

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

Nonmetallic resilient mounting

416141, B64C 2748

Patent

active

042735114

ABSTRACT:
The invention relates to a rotor, specially for a helicopter. This rotor comprises a plurality of blades connected to a rotor hub by flexible, twistable, substantially radial strips, surrounded by tubular rigid sleeves. Rigid rings are secured to the inner ends of the tubular sleeves. Spherical ball and socket joint members are inserted between each radial strip and the rigid ring. The joint members are associated with frequency adaptors for drag movements of the corresponding blade.

REFERENCES:
patent: 2949967 (1960-08-01), Jovanovich
patent: 3231222 (1966-01-01), Scheutzow
patent: 3484174 (1969-12-01), McCoubrey
patent: 3669566 (1972-06-01), Bourquardez et al.
patent: 3762834 (1973-10-01), Bourquardez et al.
patent: 3874815 (1975-04-01), Baskin
patent: 3880551 (1975-04-01), Kisovec
patent: 4012169 (1977-03-01), Mouille et al.
patent: 4047839 (1977-09-01), Ferris et al.
patent: 4053258 (1977-10-01), Mouille
patent: 4087203 (1978-05-01), Ferris
patent: 4093400 (1978-06-01), Rybicki
patent: 4104003 (1978-08-01), Mouille

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