Method and system for failure accommodation of gas generator...

Details Method and system for failure accommodation of gas generator... Method and system for failure accommodation of gas generator...

2007-03-06

2007-03-06

Casaregola, L. J. (Department: 3746)

Power plants

Reaction motor

Condition responsive thrust varying means

C060S764000

Reexamination Certificate

active

10802368

ABSTRACT:
An apparatus for providing a backup fuel metering system for the gas generator section (24) of a gas turbine engine (10) is disclosed that includes a gas generator (24) and an augmentor (40). The apparatus includes a gas generator fuel metering system (52) providing fuel to the gas generator nozzles (32) and an augmentor fuel metering system (54) providing fuel to an augmentor (40). The augmentor fuel system (54) includes a diverter valve (88) which selectably directs fuel to the augmentor (40) during augmentation operation or to the gas generator nozzles (32) during a gas generator metering system failure or critical engine operation. The system allows the gas generator nozzles (32) to be supplied with fuel flow from the gas generator metering system (52), the augmentor metering (54) system or both. When the gas generator nozzles (32) are being supplied with flow from both metering systems the system is capable of improved fault accommodation.

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