CPC F02C 9/18 (2013.01) [F02C 7/185 (2013.01); F02K 3/115 (2013.01); G01M 15/09 (2013.01); F05D 2260/213 (2013.01); F05D 2260/80 (2013.01); F05D 2270/053 (2013.01); F05D 2270/112 (2013.01); F05D 2270/301 (2013.01); Y02T 50/60 (2013.01)] | 18 Claims |
1. The method comprising:
tapping compressed cooling air from a compressor section in a gas turbine engine and passing the cooling air through a first fluid connection to a heat exchanger, and returning air from the heat exchanger through a second fluid connection back to at least one of the compressor section and a turbine section in the gas turbine engine for cooling;
sensing a sensed condition of the returning air downstream of the heat exchanger and comparing the sensed condition of the returning air to an expected condition in a control;
identifying a potential concern in a cooling air system should the sensed condition differ from the expected condition by more than a predetermined amount; and
the sensed condition being indicative of a failure in at least one of the heat exchanger, the first fluid connection, or the second fluid connection, and the control setting a maintenance flag such that when the returning air is not properly passing to the at least one of the compressor section and the turbine section the maintenance flag is set.
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