Gas turbine engine component having bypass circuit

摘要

A gas turbine engine component has an annular flange arm (61), a backing plate mounted to the flange arm (61) and a bypass circuit (72) formed between the flange arm (61) and the backing plate. The bypass circuit (72) includes one or more channels (74, 76) formed in one of the flange arm (61) or the backing plate. When more than one channels are used, at least one connecting slot (80) is provided between the channels (74, 76). At least one inlet passage has an inlet port (84) which extends through the flange arm (61) in fluid communication with the forward-most channel (74), and at least one outlet slot (88) is formed between the flange arm (61) and the backing plate in fluid communication with the aft-most channel (76).