Dual fuel path stem for a gas turbine engine

A stem couples a fuel injector inlet to a fuel nozzle. The fuel nozzle includes a primary fuel flow portion and a secondary fuel flow portion. The stem includes an input end for receiving a primary fuel flow and a secondary fuel flow from the fuel injector inlet. The stem includes three concentric t...

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Bibliographic Details
Main Authors BALL; CRAIG K, RICHEY; JOHN M
Format Patent
LanguageEnglish
Published 05.04.1988
Edition4
Subjects
AIR INTAKES FOR JET-PROPULSION PLANTS
BLASTING
BURNERS
COMBUSTION APPARATUS
COMBUSTION ENGINES
COMBUSTION PROCESSES
CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
GAS-TURBINE PLANTS
HEATING
HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
LIGHTING
MECHANICAL ENGINEERING
WEAPONS
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Summary:A stem couples a fuel injector inlet to a fuel nozzle. The fuel nozzle includes a primary fuel flow portion and a secondary fuel flow portion. The stem includes an input end for receiving a primary fuel flow and a secondary fuel flow from the fuel injector inlet. The stem includes three concentric tubes with the first tube coupling the primary fuel flow from the injector to the primary portion of the nozzle. A second concentric tube couples the secondary fuel flow from the injector to the secondary portion of the nozzle. The primary fuel flow and the secondary fuel flow in the two concentric tubes are nonlinear with respect to the input and output ends of the stem. The third concentric tube provides structural support and an insulating space for the first two concentric tubes. Methods for constructing the stem are provided. Other embodiments are disclosed.
Bibliography:Application Number: US19800210191