Patent ID: 8341935
Filing Date: 2013-01-01
Classification: B64D,F02K,Y02T

Abstract:
1. An integrated, single piece mixer-center body ventilation apparatus for use with a turbofan jet engine, the apparatus comprising: a circumferential forward body portion adapted to be coupled to an aft end of a core engine turbine case of the jet engine; a center body tube portion integrally formed with the circumferential forward body portion and having an axially opening vent exit at an end of the center body tube portion; and the circumferential forward body portion further including a plurality of inner mixer flow paths in communication with scalloped projecting portions for directing a pressurized core exhaust flow through the integrated, single piece mixer-center body ventilation apparatus and mixing the pressurized core exhaust flow with a portion of a pressurized fan exhaust flow, to thus significantly cool the pressurized core exhaust flow; a concentric tube disposed within the center body tube portion to form an annular flow path between an outer surface of the concentric tube portion and an inner surface of the center body tube portion, the annular flow path terminating at a downstream edge of the center body tube portion; and a plurality of integrally formed vent flow paths that extend through the circumferential forward body portion into communication with the annular flow path, for receiving and channeling an engine case ventilation air flow flowing within a core engine shroud of the turbofan jet engine, into the annular flow path.