Patent ID: 9650967
Date: 2017-05-16
CPC Classifications: B64D,F02C,Y02T

Claim:
1. A method for decreasing a throttle setting at which a gas turbine-powered aircraft must switch from low-pressure bleed air to a high-pressure bleed air, the method comprising: flowing low-pressure bleed air from a compressor at a first pressure; directing a first portion of the low-pressure bleed air to an air-to-air heat exchanger; cooling the first portion of the low-pressure bleed air in the air-to-air heat exchanger; flowing the first portion of the low-pressure bleed air from the air-to air heat exchanger into a cooled bleed air line; directing a second portion of the low-pressure bleed air to a low-pressure bypass line; and flowing the second portion of the low-pressure bleed air from the low-pressure bypass line into the cooled bleed air line upstream of all components of an environmental control system.