GAS TURBINE ENGINE BUFFER SYSTEM

摘要

A gas turbine engine includes a fan, a compressor section, and a turbine section configured to drive the compressor section and the fan. A buffer system is configured to communicate a buffer supply air to a portion of the gas turbine engine. The buffer system includes a first bleed air supply having a first pressure, a second bleed air supply having a second pressure that is greater than the first pressure, and an ejector that selectively augments the first bleed air supply to prepare the buffer supply air for communication to the portion of the gas turbine engine. A method and a buffer system are also disclosed.

主权项

1. A gas turbine engine, comprising:
a fan; a compressor section; a turbine section configured to drive said compressor section and said fan; and a buffer system configured to communicate a buffer supply air to a portion of the gas turbine engine, wherein said buffer system includes:
a first bleed air supply having a first pressure;a second bleed air supply having a second pressure that is greater than said first pressure; andan ejector that selectively augments said first bleed air supply to prepare said buffer supply air for communication to said portion of the gas turbine engine.