Seal assembly for gas turbine engine

A gas turbine engine comprising:

• an engine case extending along an engine axis;
• an array of blades rotatable about the engine axis;
• and
• an array of blade outer air seals distributed about the array of blades to bound a core flow path, wherein each of the seals comprises:
• an elongated seal body including a seal face that faces toward the core flow path and an opposed impingement face;
• wherein the seal body defines an internal cavity that extends circumferentially between opposed mate faces, and the seal body defines a plurality of apertures to the internal cavity along the impingement face;
• and
• wherein the seal is mounted to the engine case such that the impingement face is exposed;
• wherein the engine case defines a plurality of cooling passages spaced apart from the impingement face, and each of the plurality of cooling passages defines a passage axis that is oriented such that a projection of the passage axis intersects the seal body of a respective one of the seals.

A method of sealing of a gas turbine engine, comprising:

• securing a mounting block to an engine static structure such that the mounting block is positioned along an intersegment gap between mate faces of adjacent blade outer air seals;
• wherein each of the adjacent blade outer air seals comprises:
• an elongated seal body including a seal face that faces toward a gas path and an opposed impingement face;
• and
• wherein the seal body defines an internal cavity that extends circumferentially between opposed mate faces and defines a plurality of apertures to the internal cavity along the impingement face;
• wherein the engine static structure defines a plurality of cooling passages, and each of the plurality of cooling passages defines a passage axis that is oriented such that a projection of the passage axis intersects the seal body of a respective one of the adjacent seals;
• and
• ejecting cooling flow from the plurality of cooling passages such that the cooling flow impinges on surfaces of the seal body.