Bladed rotor assemblies and control means therefor

Details Bladed rotor assemblies and control means therefor Bladed rotor assemblies and control means therefor

1987-04-14

1989-04-18

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

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

Impeller rotation speed responsive

416 48, 416157R, B64C 1140

Patent

active

048222437

ABSTRACT:
A bladed rotor assembly and a control means therefor, which comprises a bladed rotor, a fluid-pressure-operable actuator for effecting a change of blade pitch, a first valve member connect to, and movable with the actuator and a second valve member co-operable with the first valve member, both valve mebmers having fluid passageways therein for supplying fluid to the actuator, and override means being provided to control the position of the second valve member relative to the first valve member, wherein safety means are provided to cause, in the event of failure of the over-ride means, the actuator to effect increased blade pitch.

REFERENCES:
patent: 2456361 (1948-12-01), Atteslander
patent: 2958381 (1960-11-01), Stevens et al.
patent: 2959156 (1960-11-01), Dreptin
patent: 3057410 (1962-10-01), Biermann
patent: 3228480 (1966-01-01), Jorgensen
patent: 3229771 (1966-01-01), Hedberg
patent: 3242992 (1966-03-01), Quenneville et al.
patent: 3389641 (1968-06-01), Barnes
patent: 3711221 (1973-01-01), Almqvist

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