Shrouded turbofan bleed duct

Details Shrouded turbofan bleed duct Shrouded turbofan bleed duct

F - Mech Eng,Light,Heat,Weapons

02

K

F02K 3/075 (2006.01) F02C 9/18 (2006.01)

Patent

CA 2570604

A bleed duct (42) is configured for bleeding fan air from the fan bypass duct (32) in a turbofan aircraft engine (10). The bleed duct (42) includes a tubular conduit (48) having an inlet (50) and outlet (52) at opposite ends. The conduit (48) is configured in flow area for recovering pressure from speeding fan air bled therethrough. A shroud (60,68,70,72,74) extends forwardly from the duct inlet (50) for suppressing dynamic pressure oscillations inside the conduit (48) without degrading the pressure recovery.

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