Geared rotary actuator

Details Geared rotary actuator Geared rotary actuator

1990-01-03

1991-04-09

Barefoot, Galen

Aeronautics and astronautics

Aircraft control

Pilot operated

244 76A, 475205, 475330, B64C 1334

Patent

active

050057880

ABSTRACT:
A geared rotary actuator comprises at least two axially aligned compound epicyclic gear trains driven by an input shaft so that output ring gears in each train rotate relatively. Sun gears in adjacent gear trains are drivingly coupled to the input shaft through a differential device which permits limited rotational displacement between the sun gears. An element, for example an aircraft lift control surface, may be mounted on one set of the ring gears by means of spindles which extend normally of a plane which includes the axes of the ring gears, so that as a result of stresses therein the element may tilt locally about the spindles.

REFERENCES:
patent: 2826937 (1958-03-01), Ochtman
patent: 2932473 (1960-04-01), Kass et al.
patent: 4683407 (1987-07-01), Barba et al.

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