BUFFER SYSTEM THAT COMMUNICATES BUFFER SUPPLY AIR TO A PORTION OF A GAS TURBINE ENGINE

A gas turbine engine (20) includes a buffer system (60; 160; 260) that communicates a buffer supply air (62; 162; 262A, 262B) to a portion of the gas turbine engine (20). The buffer system (60; 160; 260) includes a first bleed air supply (64; 164; 264A, 264B) having a first pressure, a second bleed...

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Bibliographische Detailangaben
Hauptverfasser: MUNSELL, Peter M, STRIPINIS, Philip. S
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung:A gas turbine engine (20) includes a buffer system (60; 160; 260) that communicates a buffer supply air (62; 162; 262A, 262B) to a portion of the gas turbine engine (20). The buffer system (60; 160; 260) includes a first bleed air supply (64; 164; 264A, 264B) having a first pressure, a second bleed air supply (66; 166; 266A, 266B) having a second pressure that is greater than the first pressure, and a valve that selects between the first bleed air supply (64; 164; 264A, 264B) and the second bleed air supply (66; 166; 266A, 266B) to communicate the buffer supply air (62; 162; 262A, 262B) to the portion of the gas turbine engine (20).