US Patent No. 10,557,366

BOAS HAVING RADIALLY EXTENDED PROTRUSIONS


Patent No. 10,557,366
Issue Date February 11, 2020
Title Boas Having Radially Extended Protrusions
Inventorship Christina G Ciamarra, Kittery, ME (US)
Brian Barainca, Kennebunk, ME (US)
Thurman Carlo Dabbs, Dover, NH (US)
Assignee UNITED TECHNOLOGIES CORPORATION, Farmington, CT (US)

Claim of US Patent No. 10,557,366

1. A blade outer air seal, comprising:a plurality of arcuate segments, wherein a first arcuate segment of the plurality of arcuate segments comprises:
a first wall located at an aft end of the first arcuate segment, the first wall comprising a first radially extending protrusion located at a first circumferential end of the first wall, a second radially extending protrusion located at a second circumferential end of the first wall opposite the first circumferential end, and a plurality of third radially extending protrusions disposed between the first radially extending protrusion and the second radially extending protrusion, wherein a radial height of the first radially extending protrusion and the second radially extending protrusion as measured from a radially inward surface of the first arcuate segment is greater than a radial height of the third radially extending protrusions as measured from the radially inward surface of the first arcuate segment;
a first hook extending aft from the first wall, wherein a radially outward surface of the first hook is radially inward of a midpoint of the first wall, the midpoint of the first wall being located halfway between the radially inward surface of the first arcuate segment and a radially outward surface of the third radially extending protrusions; and
a first gusset extending from the first radially extending protrusion.