Controlled fan stream flow bypass

摘要

A turbine engine component of a turbofan engine (10) fitted with a bypass air valve (20) includes at least one turbine engine component having a surface (31) with at least one aperture (37), said turbine engine component located from between a bypass fan duct (32) and a turbine exhaust nozzle (24) of the turbofan engine (10). The bypass air valve (20) includes a liner concentrically disposed about the turbine engine component and parallel to a centerline (30) of the turbofan engine (10). The liner has a surface including at least one aperture (42) and at least one impermeable region (44). Means are provided for actuating the liner about the turbine engine components. The flow transfer location (34) comprises an area proximate to a turbine exhaust stream flow (28).