Abstract: A turbine shroud assembly includes a carrier segment, a blade track segment, and a buffer air seal assembly. The carrier segment includes a cantilevered wall extending radially inwardly within a recess so as to form a groove between the cantilevered wall and the inner wall of the recess. The carrier segment includes a second recess located at an end of the groove that opens deeper into the segment than the groove. The buffer air seal assembly includes first and second seal members arranged in the groove, the second seal member being arranged radially outward of the first seal member. A first end of the second seal member extends circumferentially beyond the first circumferential end of the first groove, and the first end of the second seal member extends radially outwardly into the second recess so as to block circumferential movement of the second seal member.

Abstract: A turbine shroud assembly includes a carrier segment, a blade track segment, and a buffer air seal assembly. The carrier segment includes a cantilevered wall extending radially inwardly within a recess so as to form a groove between the cantilevered wall and the inner wall of the recess. The buffer air seal assembly includes first, second, and third seal members arranged in the groove. The second and third seal members are aligned with each other and arranged radially outward of the first seal member. The cantilevered wall a barrier portion wider than a main portion of the wall such that the barrier portion extends at least partially into the groove. The second and third seal members are arranged on opposing circumferential sides of the barrier portion such that the barrier portion blocks circumferential movement of the second and third seal members.

Abstract: A turbine shroud assembly includes a carrier segment, a blade track segment, and a buffer air seal assembly. The carrier segment includes a cantilevered wall extending radially inwardly within a recess so as to form a groove between the cantilevered wall and the inner wall of the recess. The carrier segment includes a second recess located at an end of the groove that opens deeper into the segment than the groove. The buffer air seal assembly includes first and second seal members arranged in the groove, the second seal member being arranged radially outward of the first seal member. A first end of the second seal member extends circumferentially beyond the first circumferential end of the first groove, and the first end of the second seal member extends radially outwardly into the second recess so as to block circumferential movement of the second seal member.