CMC shroud support system of a gas turbine

A gas turbine engine comprising:

• a turbine;
• an engine casing;
• and
• a shroud support system that extends circumferentially about at least a portion of the turbine, the shroud support system comprising:
• a shroud hanger connected to the engine casing and which extends in at least a circumferential direction, said shroud hanger having a first wall and a second wall spaced apart in an axial direction by a retainer support wall and having a boss at each circumferential end;
• a ceramic matrix composite shroud, including a shroud segment disposed in said shroud hanger between said first and second walls and said retainer support wall, each shroud segment having a generally hollow cross-sectional shape defined by a radially inner wall, a radially outer wall, a forward wall, an aft wall, and opposing first and second circumferential ends, the first circumferential end having a first end face and the second circumferential end having a second end face, a first relief section formed in the radially outer wall at the first end face and a second relief section formed in the radially outer wall at the second end face, each of the first and second relief sections extending inwardly from respective end faces to remove a section of the radially outer wall between the forward wall and aft wall such that adjacent relief sections of adjacent segments form apertures and the radially outer wall between the first and second relief sections is sized with a circumferential dimension to fit between the circumferential dimensions separating the bosses;
• a retainer having circumferentially spaced first and second fastener holes, said retainer passing through an interior of said shroud segment;
• and
• first and second bolts passing through the bosses of said shroud hanger and through the first and second relief sections and engaging said first and second bolt holes of said retainer.