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

Details

Veröffentlichungs-Nr.

EP4786740

Anmeldetag

23. Januar 2026

Veröffentlichung

5. August 2026

Rechtsraum

EP

Abstract

A ceramic matrix composite (CMC) component (200) for a turbine engine (20) includes at least one cooling cavity (260) having a cooling cavity opening (262) and defined by side walls (264) and a cavity bottom wall (266), and a cover plate (270) covering the cooling cavity opening (262). The cover plate has one or more cooling air inlets (275, 285) to permit cooling air to flow from a region above the cover plate into the cooling cavity. The cover plate further has one or more walls (280) extending downward from an inner surface of the cover plate to the cavity bottom wall thereby dividing the cooling cavity into a plurality of cooling channels or cooling subcavities (290, 292, 295), and/or creating a circuitous cooling pathway within the cooling cavity (260).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