Aircraft engine having scroll case assembly

A scroll case assembly for an aircraft engine, comprising:

• a housing extending around a central axis and defining an aperture therethrough, the aperture being an inlet for receiving combustion gases, the housing extending axially relative to the central axis from a fore end to an aft end;
• a fore cover curving from a radial orientation to a axial orientation relative to the central axis from a fore outer periphery to a fore inner periphery, the fore outer periphery secured to the fore end of the housing via a first weld or braze joint;
• an aft cover extending radially relative to the central axis from an aft outer periphery to an aft inner periphery, the aft outer periphery secured to the aft end of the housing via a second weld or braze joint, an outlet of the scroll case defined radially between the fore inner periphery and the aft inner periphery, the housing, the fore cover, and the aft cover conjointly defining a conduit extending around the central axis from the inlet to the outlet;
• and
• vanes circumferentially distributed around the central axis and located radially between the housing and the fore cover, the vanes extending from forward ends to rearward ends, the forward ends secured to the fore cover via third weld or braze joints, the rearward ends secured to the aft cover via fourth weld or braze joints.

A method for assembly a scroll case of an aircraft engine, the scroll case configured to receive combustion gases in a generally radial orientation and to expel the combustion gases in a generally axial orientation, comprising:

• brazing or welding a fore outer periphery of a fore cover to a housing at a fore end thereof;
• disposing vanes radially between the housing and a portion of the fore cover and brazing or welding the vanes to the fore cover;
• and
• brazing or welding an aft cover to both of the vanes and to an aft end of the housing.