Blade pitch control in rotatable bladed devices for vehicles

Details Blade pitch control in rotatable bladed devices for vehicles Blade pitch control in rotatable bladed devices for vehicles

1982-03-19

1985-03-05

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

Sustained ancillary movement of rotary working member

Responsive to fixed actuator

416138, 416157R, 416168R, B64C 2738

Patent

active

045028400

ABSTRACT:
A rotatable bladed device for vehicles, such as especially a helicopter rotor, which has its blade pitch controlled by a setup which includes a swash plate setup controlled by a set of hydraulic actuators and the particular swash plate setup position and attitude in turn controls the blade pitch by a plurality of rods pivoted together at one end at one particular point movable longitudinally of the rotor axis, one of which rods has its other end pivoted at a point on the pitch arm by which it controls pitch and another of which rods is also pivoted at a point fixed by the rotational position at any particular time of the rotor hub.

REFERENCES:
patent: 2439089 (1948-04-01), Hodson
patent: 2677429 (1954-05-01), Laufer
patent: 3199601 (1965-08-01), Dean et al.
patent: 4227856 (1980-10-01), Verrill et al.
patent: 4297080 (1981-10-01), Krauss et al.
patent: 4340335 (1982-07-01), Cheney
patent: 4360337 (1982-11-01), Frommlet et al.

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