Cmc-Bauteil, Boas-Anordnung, Verfahren zur Montage eines Cmc-Bauteils, und Turbinentriebwerk

Details

Veröffentlichungs-Nr.

EP4782660

Anmeldetag

15. Januar 2026

Veröffentlichung

29. Juli 2026

Rechtsraum

EP

Abstract

A ceramic matrix composite (CMC) component (200) for a turbine engine (20) includes a base (210) having a radial outer surface ( 212) and a radial inner surface inward surface (215). The base includes a plurality of ceramic fiber plies and a ceramic matrix. A cooling cavity (260) extends from the outer radial surface of the base into an interior region of the base. The cooling cavity has a cavity opening (262) at the outer radial surface of the base. The cooling cavity is defined by cavity side walls (264), a cavity bottom wall (266), and an impingement plate (270) or a cover plate covering the cavity opening. At least one spring member (280) includes a contact region (310), a first curved region (320a) and a first end section (330a). The first curved region is connected to both the contact region and the first end section. The first end section is in contact with a restraining member (240), and the contact region is in contact with the impingement plate or cover plate and acts to hold the impingement plate or cover plate in position to cover the cavity opening. The CMC component is a blade outer air seal (BOAS) segment. A BOAS assembly includes a plurality of the BOAS segments arranged to form an annular shaped structure. A method of assembling the CMC component includes: providing the CMC component; providing the impingement plate or the cover plate; retaining the impingement plate or cover plate in a position to cover the cavity opening using the at least one spring member. The turbine engine includes a fan section (22), a compressor section (24), a combustion chamber (56), and a turbine section (28). The turbine section includes at least one rotor and one or more turbine blade(s) extending radially outwardly from the at least one rotor; the blade outer air seal assembly positioned between the one or more turbine blade(s); and an outer casing (36).

Anmelder

Firma

RTX Corporation

Land

🇺🇸 USA