Cmc-Bauteil, Boas-Anordnung, Verfahren zur Steuerung eines Kühlluftstroms Innerhalb eines Cmc-Bauteils, und Turbinentriebwerk

Details

Veröffentlichungs-Nr.

EP4786741

Anmeldetag

23. Januar 2026

Veröffentlichung

5. August 2026

Rechtsraum

EP

Abstract

A ceramic matrix composite (CMC) component (400) for a turbine engine (20) includes a base (410) having a radial outer surface (412) and a radial inner surface (415), a cooling cavity (460) within the base that extends from the radial outer surface (412) of the base into an interior region of the base, the cooling cavity having a cooling cavity opening (462) at the outer radial surface of the base and being defined by cavity side walls ( 464) and a cavity bottom wall (466), and a cover plate (200) covering the cooling cavity opening of the cooling cavity. The cover plate comprises an edge region (210) around the perimeter of the cover plate which is in contact with the base and a central recessed region (220) which extends into the cooling cavity. The central recessed region is defined by side walls (230) and a bottom wall (240) wherein each side wall of the central recessed region is spaced from a corresponding cavity side wall (464) and the bottom wall of the central recessed region is spaced from the cavity bottom wall. The central recessed region has a plurality of cooling air inlets (250) to permit cooling air to flow from a region above the cover plate into the cooling cavity. The CMC component is a blade outer air seal (BOAS) segment. A BOAS assembly comprising a plurality of the BOAS segments arranged to form an annular shaped structure. A method of controlling cooling air flow within a CMC component for a turbine engine includes providing the CMC component; and covering the cooling cavity opening of the cooling cavity with the cover plate. The turbine engine includes a fan section (22), a compressor section (24), a combustion chamber (26), and a turbine section (28), the turbine section (28) including at least one rotor and one or more turbine blade(s) extending radially outwardly from the at least one rotor; and the blade outer air seal assembly positioned between the one or more turbine blade(s) and an outer casing to the engine.

Anmelder

Firma

RTX Corporation

Land

🇺🇸 USA