Gas turbine engine

摘要

A gas turbine engine mid turbine frame (28) having an inner case (114) supporting at least one bearing (102,104) and at least three spokes (36) extending radially outwardly to an outer case (30), the mid turbine frame (28) having an interturbine duct (110) extending through the mid turbine frame (28), the interturbine duct (110) spaced axially closer to an upstream turbine disc (200) than a bearing supporting structure (50) of the mid turbine frame (28) and mounted axially slidingly relative to the bearing supporting structure (50) to substantially isolate the bearing supporting structure (50) from axial loads, for example such as disc loads incurred in the unlikely event a turbine disc shaft (20) shears within the engine.