Patent ID: 8317461

Claim:
A blade outer air seal comprising: a blade outer air seal for being positioned radially outwardly of a gas turbine blade; said blade outer air seal having at least one cooling air passage extending along a first dimension; a dividing wall dividing said at least one cooling air passage into two separate flow paths, with said dividing wall extending from a first end on the upstream side to a second end on the downstream side, such that the distance between the first end and the second end is smaller than the entirety of said first dimension; said dividing wall extending through an entire radial dimension of said at least one cooling air passage, and between inner and outer walls of said at least one cooling air passages; wherein there are a plurality of said cooling air passages in said blade outer air seal, with each of said plurality of cooling air passages being divided into two separate flow paths; and said two separate flow paths both communicate with a common inlet adjacent the first end, with flow from said common inlet passing into both of said two separate flow paths, and then being recombined downstream of said dividing wall adjacent the second end, and passing outwardly of a common outlet.