Rotor shaft with internal controls for helicopters

Details Rotor shaft with internal controls for helicopters Rotor shaft with internal controls for helicopters

1980-01-24

1983-03-08

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

Sustained ancillary movement of rotary working member

Responsive to fixed actuator

416168R, 416170R, B64C 2774

Patent

active

043759408

ABSTRACT:
A rotor shaft for helicopters in which a main rotatable shaft is tubular and supports in its interior a shaft (25) which is angularly fixed relative to the helicopter body and disposed coaxially to said main shaft; a swivel plate assembly being coupled to said fixed inner shaft and being disposed, together with at least part of a plurality of kinematic linkages connecting said swivel plate to the rotor blades and a plurality of actuator means controlling the position of said swivel plate, inside the space lying between said main shaft and said inner shaft.

REFERENCES:
patent: 2439089 (1948-04-01), Hodson
patent: 2444070 (1948-06-01), Stanley
patent: 2474362 (1949-06-01), Keranen
patent: 2573016 (1951-10-01), Harby
patent: 2932353 (1960-04-01), Armstrong
patent: 2984306 (1961-05-01), Kottsieper
patent: 3002569 (1961-10-01), Doblhoff
patent: 3080002 (1963-03-01), DuPont
patent: 3207226 (1965-09-01), Caldwell
patent: 3572616 (1971-03-01), Ulisnik
patent: 3637322 (1972-01-01), Kannamuller et al.
patent: 3738772 (1973-06-01), Parenti
patent: 3756743 (1973-09-01), Robertson
patent: 3759629 (1973-09-01), Abramopaulos

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