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A fuel system for providing a desired fuel flow to an engine comprises a metering assembly for providing a variable portion of metered fuel flow to an associated nozzle system. The variable portion corresponds to a variable demand signal received by the metering assembly. A centrifugal pumping assem

A fuel system for providing a desired fuel flow to an engine comprises a metering assembly for providing a variable portion of metered fuel flow to an associated nozzle system. The variable portion corresponds to a variable demand signal received by the metering assembly. A centrifugal pumping assembly is adapted to receive fuel from an associated pumping system. The centrifugal pumping assembly is capable of pressurizing and delivering adequate fuel flow to the metering assembly. A throttling valve is in fluid communication between the metering assembly and the centrifugal pumping assembly to maintain a constant pressure rise across the metering assembly. An electronic engine control provides the variable demand signal to the metering assembly.

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1. A fuel system for providing a desired fuel flow to an engine, comprising: a metering assembly for providing a variable portion of metered fuel flow to an associated nozzle system, the variable portion corresponding to a variable demand signal received by the metering assembly; a centrifugal p

1. A fuel system for providing a desired fuel flow to an engine, comprising: a metering assembly for providing a variable portion of metered fuel flow to an associated nozzle system, the variable portion corresponding to a variable demand signal received by the metering assembly; a centrifugal pumping assembly adapted to receive fuel from an associated pumping system, the centrifugal pumping assembly capable of pressurizing and delivering adequate fuel flow to the metering assembly; a throttling valve in fluid communication between the metering assembly and the centrifugal pumping assembly to maintain a constant pressure rise across the metering assembly; an electronic engine control for providing the variable demand signal to the metering assembly; and a fuel temperature probe for providing internal fuel temperature feedback to the electronic engine control to improve the accuracy of metered flow delivered to the associated nozzle system. 2. The fuel system of claim 1 wherein the centrifugal pumping assembly includes a shaft-driven centrifugal pump. 3. The fuel system of claim 2 wherein the centrifugal pump is driven directly by the engine shaft at high speeds. 4. The fuel system of claim 1 wherein the metering assembly includes a low-pressure, variable speed pump. 5. The fuel system of claim 4 wherein the variable speed pump is electrically powered. 6. The fuel system of claim 1 wherein the metering assembly includes an electric motor and a positive displacement metering pump driven by the electric motor for metering flow to the associated nozzle system. 7. The fuel system of claim 1 wherein the metering assembly includes a flow divider for selectively proportioning fuel flow to a primary nozzle and a secondary nozzle of the associated nozzle system. 8. The fuel system of claim 1 wherein the metering assembly includes a means for preventing fuel flow to the associated nozzle system. 9. The fuel system of claim 1 wherein the metering assembly provides system pressures and flows during engine starting. 10. The fuel system of claim 1 wherein the variable demand signal of the electronic engine control varies depending upon input command signals and an input power source received by the electronic engine control.