Air cooling design for tail-cone generator installation

摘要

A system for cooling a generator (60) mounted in the tail-cone (58) of an engine comprises a fairing (66), which receives through an inlet (68) thereof air from a bypass duct (38) and directs the bypass air (40) towards a cavity (62) of the tail-cone (58) for cooling the generator. The bypass air (40) is then expelled through an outlet (76) of a support strut (56) positioned in fluid communication with the tail-cone cavity (62). The fairing inlet (68) and the strut outlet (76) are both positioned in a plane substantially perpendicular to a longitudinal plane of the engine. In this manner, circulation of the bypass air through the fairing (66), the tail-cone cavity (62), and the strut (56) may be achieved. The bypass air directed through the fairing (66) further enables cooling of service lines (64) accommodated in the fairing (66). A lobe mixer (52) is further used to direct the fairing (66) and shield the latter from core exhaust.