Patent ID: 9528391
Filing Date: 2016-12-27
CPC Classification: F01D,F02C,F04D,F05D,Y02T

Claim Text:
1. An axially extending outer case for a gas turbine engine, the outer case comprising: an arcuate case wall having an inner surface and an outer surface; an opening extending through the arcuate case wall; a boss extending radially from the outer surface of the arcuate case wall and surrounding the opening, wherein the boss comprises: a bump-out extending circumferentially along the arcuate case wall, a portion of the bump-out forming a corner of a flow path that extends from an interior of the arcuate case to the flange, wherein the bump-out increases a local radius of the arcuate case wall as compared to a radius of the inner and outer surfaces with respect to a centerline; and contouring surrounding the opening along the inner surface of the arcuate case wall within the boss, wherein the contouring provides a smooth transition between the inner surface of the arcuate case wall and the inner sidewall; wherein: