| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a gas turbine engine cooling system. <P>SOLUTION: The gas turbine engine cooling system includes a heat exchanger 56 in fluid communication with a source 57 of cooling air, at least a first cooling circuit 62 including a first heat exchanger 100 in the heat exchanger, and a first bypass circuit 110 in the first cooling circuit provided with a first bypass valve 114 for selectively bypassing at least a portion of first airflow 118 around the first heat exchanger circuit. A second cooling circuit may be used having a second heat exchanger circuit 104 in the heat exchanger and a shutoff control valve 112 operably disposed in the second cooling circuit 102 upstream of the second heat exchanger circuit and the heat exchanger. A circuit inlet 58 of the first cooling circuit may be used to bleed a portion of compressor discharge bleed air 79 for the first airflow to cool turbine blades 40 mounted on a rotor disk 42 using an annular flow inducer 84 downstream of the first bypass valve and the heat exchanger. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
