Title:
A supply pre-cooling machine bypass of an environmental control system
Document Type and Number:
Japanese Patent JP6165413
Kind Code:
B2
Abstract:
A precooler (7) for cooling compressor bleed air (38) for an environmental control system (6) includes a heat exchanger (56) in fluid communication with a source of cooling air (57) and operable for cooling the bleed air (38). A variable bypass valve (74) between a bleed air source (116) and environmental control system (6) is operable for bypassing at least a portion of the compressor bleed air (38) around the heat exchanger (56). The cooling air may be a portion of fan air (33) modulated by a variable fan air valve (76). The bleed air source may be selectable between the low pressure bleed air source (116) and a high pressure bleed air source (118). One method includes flowing the compressor bleed air (38) from a single low pressure source only and increasing thrust sufficiently to meet a minimum level of pressure of the bleed air (38) during one engine out aircraft operating condition during approach or loitering.
Inventors:
Mohamed El Hasin Sennaun
Nicholas Row Dinsmore
Brandon Wayne Miller
Nicholas Row Dinsmore
Brandon Wayne Miller
Application Number:
JP2012039536A
Publication Date:
July 19, 2017
Filing Date:
February 27, 2012
Export Citation:
Assignee:
GENERAL ELECTRIC COMPANY
International Classes:
B64D13/00; F01D17/00; F02C6/08; F02C7/00; F02C7/32; F02C9/18
Domestic Patent References:
| JP2008094189A | ||||
| JP2008509841A | ||||
| JP56154130A |
Foreign References:
| US20100192593 | ||||
| US5309724 | ||||
| US7198037 | ||||
| US20100243220 | ||||
| US4091613 |
Attorney, Agent or Firm:
Arakawa Satoshi
Hirokazu Ogura
Toshihisa Kurokawa
Takuto Tanaka
Hirokazu Ogura
Toshihisa Kurokawa
Takuto Tanaka