Variable cycle engine with split fan section

Details Variable cycle engine with split fan section Variable cycle engine with split fan section

F - Mech Eng,Light,Heat,Weapons

02

K

60/79, 60/82

F02K 3/02 (2006.01) F02K 3/075 (2006.01)

Patent

CA 1058888

VARIABLE CYCLE ENGINE WITH SPLIT FAN SECTION Abstract of the Disclosure The fan section of a gas turbine engine is divided into a front section and an aft section axially displaced downstream of the front fan section. A duct is provided for bypassing the inlet gas stream around a gas generator. The bypass duct has a first inlet disposed intermediate the front and aft fan sections and a second inlet disposed downstream of the aft fan section. In order to provide increased flexibility in modulating the engine bypass ratio, a diverter valve is provided downstream of the aft fan section to selectively distribute the airflow exhausted from the front fan section between the aft fan section and bypass duct and to selectively distribute the air exhausted from the aft fan section between the bypass duct and gas generator.

254587

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