Bearbeitete Cmc Vorform für eine Turbine und Entsprechendes Verfahren

Details

Veröffentlichungs-Nr.

EP4749093

Anmeldetag

21. November 2025

Veröffentlichung

27. Mai 2026

Rechtsraum

EP

IPC

F01D5/28, B32B18/00, F01D25/12

Abstract

A preform (200) for a ceramic matrix composite (CMC) component having a flow path surface, such as a blade outer air seal (BOAS), a blade, a vane, or a combustor panel, includes a base preform (200) includes a polyvinyl butyral (PVB) tackifier for dimensional stability and has a corresponding flow path surface. One or more machined channels (210) are formed on the corresponding flow path surface of the base preform (200), and may include additional features such as ribs, trip strips, or pin fins. One or more overwrap plies are then disposed on the base preform (200) and cover the one or more machined channels (210) to form a cooling feature. The overwrapped base preform may then be densified to provide a CMC component with a cooling feature on the flow path surface.

Anmelder

Firma

RTX Corporation

Land

🇺🇸 USA