Three spool engine bearing configuration

DRIVE January 30, 2013
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A gas turbine engine (10) includes a core section (12) having a low spool (58), intermediate spool (60) and a high spool (62) that rotate about a common axis (A). The intermediate spool (60) is supported at an aft position by an inter-shaft bearing arrangement (48) on the low spool (58). The low spool (58) is supported for rotation in an aft position by an aft roller bearing (46) supported on a turbine exhaust case (36) of the gas turbine engine (10). The high spool (62) is supported by a high spool aft roller bearing (64) disposed within a high spool bearing compartment (50). The high spool bearing compartment (50) is positioned within a radial space (66) between the combustor (26) and the axis (A).

Discussion in the ATmosphere

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