LUBRICATION OF EPICYCLIC GEAR SYSTEM FOR GAS TURBINE ENGINE

An epicyclic gear system (36) includes a sun gear (42), a ring gear (40), and two or more star gear assemblies enmeshed between the sun gear and the ring gear. Each star gear assembly includes a star gear (38) and a journal bearing (44) supportive of the star gear. The journal bearing includes one o...

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Bibliographische Detailangaben
1. Verfasser:	McCune, Michael E
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AIR INTAKES FOR JET-PROPULSION PLANTS BLASTING COMBUSTION ENGINES CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS ENGINEERING ELEMENTS AND UNITS GAS-TURBINE PLANTS GEARING GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	An epicyclic gear system (36) includes a sun gear (42), a ring gear (40), and two or more star gear assemblies enmeshed between the sun gear and the ring gear. Each star gear assembly includes a star gear (38) and a journal bearing (44) supportive of the star gear. The journal bearing includes one or more lubricant passageways (54, 56) to deliver a flow of lubricant to a selected location of the star gear assembly, wherein a first cross-sectional area of a lubricant passage of a first journal bearing of the two or more star gear assemblies is greater than a second cross-sectional area of the corresponding lubricant passage of a second journal bearing of the two or more star gear assemblies.