Fluid reaction surfaces (i.e. – impellers) – Sustained ancillary movement of rotary working member – Responsive to fixed actuator
Patent
1990-04-11
1991-11-26
Look, Edward K.
Fluid reaction surfaces (i.e., impellers)
Sustained ancillary movement of rotary working member
Responsive to fixed actuator
416134A, 74 60, B64C 27605
Patent
active
050678752
ABSTRACT:
A flexible composite scissor assembly is disclosed which utilizes one or more composite straps disposed either in a radial or non-radial relationship between a hub attached to a rotor and an inner or outer ring of a helicopter swashplate. The composite material has sufficient edge-wise stiffness to allow effective torque transmission between the rotor shaft and the swashplate yet has sufficient flexibility to allow for a vertical and angular displacement of the swashplate relative to the rotor shaft. Utilizing a flexible composite scissor assembly eliminates the need for mechanical linkages having pins and bearings which are a frequent source for wear, increasing the reliability of the rotor assembly, while reducing weight.
REFERENCES:
patent: 2410545 (1946-11-01), Main
patent: 2669308 (1954-02-01), Thomson
patent: 3558082 (1971-01-01), Bennie
patent: 4588355 (1986-05-01), Ferris et al.
patent: 4877375 (1989-10-01), Desjardins
Doolin Leonard J.
Hunter Dave H.
Lauck Kenneth L.
Milne Robert J.
Poulin Stephen V.
Larson James A.
Look Edward K.
Sapone William J.
United Technologies Corporation
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