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Title: Centrifugal pump fuel system

A centrifugal pump fuel system for an engine driven fuel pump for an aircraft gas turbine engine is described comprising: a centrifugal pump having at constant speed rising head/flow characteristic at low flows; a plumbing system receiving flow from the pump, and having at least one control valve located down stream of and defining a discrete volume of the plumbing system; a plumbing resonant frequency defined by the discrete volume, the geometry of the plumbing system, and the bulk modulus of the fuel; a pressure difference regulating valve located adjacent to the discharge of the pump, up stream of the vast majority of the discrete volume; and the frequency response of the regulating valve being significantly less than the frequency response of the plumbing system such that the response of the regulating valve is attenuated at the resonant frequency of the plumbing system.
Authors:
; ; ;
Publication Date:
OSTI Identifier:
6216270
Report Number(s):
US 5220793; A
PPN: US 7-906193
Resource Type:
Patent
Resource Relation:
Patent File Date: 29 Jun 1992
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS; FUEL INJECTION SYSTEMS; CENTRIFUGAL PUMPS; GAS TURBINE ENGINES; FREQUENCY DEPENDENCE; PRESSURE REGULATORS; VALVES; CONTROL EQUIPMENT; ENGINES; EQUIPMENT; FLOW REGULATORS; FUEL SYSTEMS; HEAT ENGINES; INTERNAL COMBUSTION ENGINES; PUMPS 330103* -- Internal Combustion Engines-- Turbine