Fluid reaction surfaces (i.e. – impellers) – Articulated – resiliently mounted or self-shifting impeller... – Nonmetallic resilient mounting
Patent
1978-07-10
1980-09-16
Powell, Jr., Everette A.
Fluid reaction surfaces (i.e., impellers)
Articulated, resiliently mounted or self-shifting impeller...
Nonmetallic resilient mounting
416141, B64C 2738
Patent
active
042227097
ABSTRACT:
The invention relates to a variable-pitch rotor, specially for a rotary-wing aircraft. Each blade of the rotor is connected to the hub by a flexible connecting member comprising a radial bundle of fibres, each agglomerated by a resin and secured together by a vulcanized elastomer. A rigid tubular sleeve surrounds the connecting member without contact thereto. The outer end of the tubular sleeve is secured to the root part of the blade and its inner end is secured to a rigid ring, to which a blade pitch control lever is externally articulated. Spherical ball and socket joint members are inserted between the rigid ring and rigid parts of the rotor hub. Frequency adaptors are associated with the ball and socket joint members.
REFERENCES:
patent: 2949967 (1960-08-01), Jovanovich
patent: 3231222 (1966-01-01), Scheutzow
patent: 3880551 (1975-04-01), Kisovec
patent: 4012169 (1977-03-01), Mouille et al.
patent: 4053258 (1977-10-01), Mouille
patent: 4086024 (1978-04-01), Weiland et al.
patent: 4087203 (1978-05-01), Ferris
patent: 4093400 (1978-06-01), Rybicki
Flocks Karl W.
Powell Jr. Everette A.
Societe Nationale Industrielle Aerospatiale
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