VENTED TANGENTIAL ON-BOARD INJECTOR FOR A GAS TURBINE ENGINE

摘要

An on-board (44) injector that delivers discharge air toward a turbine rotor of a gas turbine engine (10) includes a second wall (62) spaced form a first wall (60) to define an annular inlet (64) about an engine longitudinal axis (A) and a multiple of airfoil shapes (66) between the first wall (60)and the second wall (62) to segregate discharge air (D) from the annular inlet (64), and a multiple of bypass apertures (68) each along a radial axis (B) transverse to the engine longitudinal axis (A) through each of the multiple of airfoil shapes (66) and the respective first wall (60), the second wall (62).