BEARING ASSEMBLY WITH A REDUCED AXIAL SPACE SELF-PRESSURIZING DAMPER AND CORRESPONDING METHOD FOR MAINTAINING PRESSURE IN SAID DAMPER

A bearing assembly for a gas turbine engine includes a bearing housing (204) having a first bearing housing surface (205) and a second bearing housing surface (206). The bearing housing surfaces (205, 206) are substantially axially parallel. A the first bearing housing surface (205) has a first and...

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Bibliographische Detailangaben
Hauptverfasser:	VARNEY, Philip Andrew, GYSLING, Daniel L
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BEARINGS BLASTING ELEMENTS OR CRANKSHAFT MECHANISMS ENGINE PLANTS IN GENERAL ENGINEERING ELEMENTS AND UNITS FLEXIBLE SHAFTS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES ROTARY BODIES OTHER THAN GEARING ELEMENTS SHAFTS STEAM ENGINES THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	A bearing assembly for a gas turbine engine includes a bearing housing (204) having a first bearing housing surface (205) and a second bearing housing surface (206). The bearing housing surfaces (205, 206) are substantially axially parallel. A the first bearing housing surface (205) has a first and second piston ring groove (212, 213) with a corresponding piston ring (214, 215) in each groove. A damper (210) includes a first outer surface (209) radially adjacent to and opposing the first bearing housing surface (205) and a second outer surface (216) radially adjacent to and opposing the second bearing housing surface (206). The second outer surface (216) includes a third and fourth piston ring groove (217, 219) with a corresponding piston ring (220, 222) disposed in each groove. The bearing housing (204) includes a damping fluid passage (224) configured to provide damping fluid to a gap (211) radially between the first outer surface (209) and the first bearing housing surface (205) and to a gap (223) radially between the second outer surface (216) and the second bearing housing surface (206). A method for maintaining pressure in a squeeze film bearing damper is also provided.