Äussere Laufschaufelluftdichtung, Gasturbinentriebwerk und Verfahren zum Schützen einer Äusseren Laufschaufelluftdichtung

Details

Veröffentlichungs-Nr.

EP4628705

Aktenzeichen

EP25168654

Anmeldetag

4. April 2025

Veröffentlichung

8. Oktober 2025

Rechtsraum

EP

IPC

F01D11/08F01D11/12F01D25/00C04B35/80

Abstract

A blade outer air seal (105) includes a center web (105a) having a radially inner face (106) and a radially outer face, at least one mounting arm (105b) extending from the radially outer face, and a coating (200) disposed on the radially inner face (106). The coating (200) includes an environmental barrier coating layer and an abradable layer disposed on the environmental barrier layer. The abradable layer has a Mohs hardness of 3.5 to 7.5 and the porosity of the abradable layer is chosen in view of the Mohs hardness, which significantly improves the durability of the abradable layer. A gas turbine engine and a method of protecting a blade outer air seal (105) are also disclosed.

Anmelder

Firma

RTX Corporation

Land

🇺🇸 USA

Fachgebiete