Control system for blades for a variable pitch propeller

Details Control system for blades for a variable pitch propeller Control system for blades for a variable pitch propeller

1998-05-01

2000-06-20

Look, Edward K.

Fluid reaction surfaces (i.e., impellers)

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

Impeller rotation speed responsive

416157R, 416 36, 416 45, 416 46, 416 50, 416 52, 416 61, 416153, 416154, 416167, B64C 1138

Patent

active

060770406

ABSTRACT:
A system for controlling propeller blade pitch is disclosed. The system comprises a transfer tube, wherein the transfer tube defines an element of the rotatable portion and wherein the transfer tube is non-translating relative the rotatable and non-rotatable portions. A transfer bearing for providing hydraulic fluid to and interfacing with the transfer tube is also used, wherein the transfer bearing is located on the non-rotatable portion. The system further includes a pitch change actuator and a mechanism form for actuating the pitch change actuator, wherein the mechanism is fluidically connected to and translatable relative to the transfer tube. A device for measuring blade angle of the propeller blade is also provided, wherein the device is separate and distinct from the transfer tube.

REFERENCES:
patent: 4563940 (1986-01-01), Wuhrer
patent: 4901746 (1990-02-01), Metcalf
patent: 5141399 (1992-08-01), Duchesneau et al.
patent: 5174718 (1992-12-01), Lampeter et al.
patent: 5186608 (1993-02-01), Bagge
patent: 5487645 (1996-01-01), Eccles
patent: 5865599 (1999-02-01), Pruden et al.
patent: 5897293 (1999-04-01), Arel et al.

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