Bladed rotor assembly and a control system therefor

Details Bladed rotor assembly and a control system therefor Bladed rotor assembly and a control system therefor

1986-09-23

1988-09-20

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

With control means responsive to non-cyclic condition...

Plural distinct impellers having related control

416 49, 416127, 416130, B64C 1148

Patent

active

047721812

ABSTRACT:
A counterrotatable bladed rotor assembly drivable by a rotatable shaft comprises a leading propeller, a trailing propeller, and a gearbox located axially between the two propellers and enclosed by a non-rotatable casing having an end for attachment to a support structure. The gearbox has a first output shaft to the leading propeller and a second output shaft to the trailing propeller. A first fluid-pressure operable actuator is provided to vary the pitch of the blades of the leading propeller, and a second fluid-pressure operable actuator is provided to vary the pitch of the blades of the trailing propeller. In addition passageways are provided to connect the first and second actuators to a source of fluid under pressure. The casing rotatably supports the second output shaft at a position between the gearbox and the leading propeller and rotatably supports the first output shaft at a position between the gearbox and the trailing propeller. In this manner a compact and lightweight support arrangement is provided for the propellers.

REFERENCES:
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patent: 4563129 (1986-01-01), Pagluica
patent: 4591313 (1986-05-01), Miyakake et al.

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