Äussere Luftdichtungsfederdichtungskonfiguration einer Keramikmatrixverbundstoffschaufel und Verfahren

Details

Veröffentlichungs-Nr.

EP4786738

Anmeldetag

30. Januar 2026

Veröffentlichung

5. August 2026

Rechtsraum

EP

Abstract

A feather seal arrangement for a ceramic matrix composite (CMC) blade outer air seal (BOAS) of a turbine engine includes a CMC BOAS segment (300) having a specific geometry and a first feather seal (350). The CMC BOAS segment includes a shoe (310) having a flowpath side (312), an opposing non-flowpath side (314), and first and second matefaces (315) extending axially between the flowpath side and the non-flowpath side from an upstream leading edge (317) to a downstream trailing edge (319). One or more support flanges (320) extend substantially transverse from the non-flowpath side. A geometry of the CMC BOAS segment allows a substantially flat first feather seal surface to be disposed on the non-flowpath side adjacent and substantially transverse to the first mateface. A first feather seal (350) is disposed atop the non-flowpath side on the first feather seal surface and extends to an adjacent feather seal surface of an adjacent CMC BOAS segment.

Anmelder

Firma

RTX Corporation

Land

🇺🇸 USA