Impeller pump and vane pump assembly with clutch deactivation

Details Impeller pump and vane pump assembly with clutch deactivation Impeller pump and vane pump assembly with clutch deactivation

1976-06-29

1977-12-06

Husar, C. J.

Rotary kinetic fluid motors or pumps

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

Control of clutch or brake surface

415 62, 415123, 417199A, 192103A, B27C 900

Patent

active

040614395

ABSTRACT:
A fuel pump assembly for a gas turbine engine incorporates an impeller pump and a vane pump which are driven by a common drive shaft. A centrifugally operated clutch functions to disengage the vane pump from the drive shaft at a predetermined angular velocity. The vane pump is designed to fulfill dry lift, starting flow and pressure requirements for the engine. The impeller pump, alone, provides fuel to the engine near idle speed and above after the vane pump has been disengaged from the drive shaft.

REFERENCES:
patent: 2432591 (1947-12-01), Schuckers
patent: 2464144 (1949-03-01), McConaghy
patent: 2612844 (1952-10-01), Grise
patent: 3208389 (1965-09-01), Stefan
patent: 3518028 (1970-06-01), Minick
patent: 3811797 (1974-05-01), Lewis
patent: 3851998 (1974-12-01), Downing
patent: 3941505 (1976-03-01), Nasvytis et al.
patent: 3961859 (1976-06-01), Cygnor et al.
ASME Publication entitled Develop. of a Retracting Vane/Centrifugal Main Fuel Pump for Gas Turbine Engine, by Pech et al. 3/1976.

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