Multi-piece fairing for monolithic turbine exhaust case

摘要

A gas turbine engine component comprises a frame and a fairing. The frame comprises a monolithic ring-strut-ring structure. The fairing comprises a multi-segment ring-strut-ring structure that is assembled around the frame. A method of assembling the frame and fairing comprises positioning a plurality of shroud segments within a frame and joining the plurality of shroud segments to each other so that the fairing is trapped within the frame. In one embodiment, the fairing comprises a plurality of outer diameter shroud segments, a plurality of inner diameter shroud segments, a plurality of strut segments, and stiffening features connected to the plurality of strut segments to strengthen the fairing.

主权项

1. A turbine exhaust case comprising:
a monolithic ring-strut-ring frame comprising:
an inner ring;an outer ring; anda plurality of struts connecting the inner ring and the outer ring; and a multi-segment ring-strut-ring fairing assembled around the frame, the multi-segment ring-strut-ring fairing comprising:
a plurality of outer diameter shroud segments;a plurality of inner diameter shroud segments; anda plurality of strut segments joined between the outer diameter shroud segments and the inner diameter shroud segments, wherein each of the plurality of strut segments comprises:
an outer fairing portion;an inner fairing portion;a strut shell connecting the inner and outer fairing portions; andpads located on the inner and outer fairing portions, wherein the pads extend a partial distance along inner and outer fairing portions to provide local stiffening at leading edge and trailing edge intersections of the strut shell with the inner and outer fairing portions.