Acoustic liner with bypass cooling

摘要

An acoustic liner (20) includes a remote panel (26), a proximate panel ( 28 ) transversely spaced from the remote panel ( 26 ) and a resonator chamber ( 34b ) residing between the panels ( 22 , 26 ). Perforations ( 38 ) penetrate the proximate panel ( 22 ) in registration with the resonator chamber ( 34b ). A neck ( 56 ) with an inlet ( 58 ) recessed from the proximate panel ( 22 ) establishes communication between the chamber ( 34b ) and a fluid stream ( G ) flowing past the proximate panel ( 22 ). A bypass coolant passage ( 66 ) guides coolant through the perforations ( 38 ) without guiding it through the resonator chamber ( 34b ).