Aircraft fuel pump with centrifugal pump and regenerative pump s

Details Aircraft fuel pump with centrifugal pump and regenerative pump s Aircraft fuel pump with centrifugal pump and regenerative pump s

1997-11-13

2000-05-09

Thorpe, Timothy S.

Pumps

Diverse pumps

Including rotary nonexpansible chamber type

417308, 60734, F04B 2314

Patent

active

06059537&

ABSTRACT:
A fuel pressurization and pumping system for use in a turbine powered aircraft or the like makes use of the advantages of centrifugal pumps, even in a high pressure mode and includes a centrifugal volute pump (24) having a fuel inlet (28) and fuel outlet (32) along with a regenerative pump (34) having a fuel inlet (36) and a fuel outlet (38). The fuel outlet (32) of the centrifugal volute pump (24) is connected to the fuel inlet (36) of the regenerative pump (34) and a valve (50) is provided for blocking flow from the centrifugal volute pump (24) to the regenerative pump (34). A first pressure regulator (56) is connected to regenerative pump outlet (38) for maintaining pressure thereat at a relatively low elevated level and a second pressure regulator (130) is connected to the regenerative pump outlet (38) for maintaining pressure thereat at a relatively high elevated level. A valve system (66), (90) is provided for selectively disabling the first pressure regulator (56).

REFERENCES:
patent: 4247263 (1981-01-01), Pech et al.
patent: 4607486 (1986-08-01), Cole
patent: 4700680 (1987-10-01), Pearce
patent: 4869642 (1989-09-01), Williamson et al.
patent: 4926629 (1990-05-01), Eick et al.
patent: 5456574 (1995-10-01), Donnelly et al.
patent: 5495715 (1996-03-01), Loxley

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