Gas turbine engine exhaust frame for minimizing the thermal stress and method for assembling it

摘要

A heat shield (80) for a gas turbine engine hub (50) which facilitates reducing thermal stress in an exhaust frame (22) of a gas turbine engine (10). The exhaust frame includes the hub mounted within the engine with a plurality of supports (40). The supports extend radially outward from the hub through a primary flow cavity (60) and facilitate flow to a secondary flow cavity (82). The heat shield defines the secondary flow cavity such that the secondary flow cavity is radially inward and axially adjacent the hub. The heat shield includes a plurality of thermal stress relieving corrugations (96).