TURBINE STAGE COOLING

摘要

A turbine injection system (148) for a gas turbine engine (20) includes a first end operable to receive air from a heat exchanger (140), a second end operable to distribute mixed cooling air to a turbine stage, an opening (136) downstream of said first end and a mixing plenum (152) downstream of said first end and said opening (136). The opening (136) provides a direct fluid pathway into said turbine injection system (148) from the combustor (56) of the engine (20).