Anordung einer Äusseren Laufschaufelluftdichtung aus Keramikmatrixverbundwerkstoff, mit Doppelstift Gehaltene Äussere Laufschaufelluftdichtung und Verfahrem zum Halten einer Äusseren Laufschaufelluftdichtung aus Keramikmatrixverbundwerkstoff

Details

Veröffentlichungs-Nr.

EP4745368

Anmeldetag

23. Mai 2025

Veröffentlichung

20. Mai 2026

Rechtsraum

EP

Abstract

A ceramic matrix composite (CMC) blade outer air seal (BOAS) assembly includes a CMC BOAS (200) including a base (210) and a pair of rails (220) having a substantially π-shaped cross-section. The pair of rails include a first pair of aligned holes (235) at a first end and a second pair of aligned holes at a second end. A first pair of parallel metallic pins (230) have a first end connected to a first central support pin (260) and a second end connected to a second central support pin, respectively, wherein the first pair of parallel metallic pins are configured to engage the first pair of aligned holes. A second pair of parallel metallic pins also have a first end connected to a first central support pin and a second end connected to a second central support pin, respectively, wherein the second pair of parallel metallic pins are configured to engage the second pair of aligned holes.A dual pin loaded BOAS includes a CMC BOAS base having a first end and a second end. A pair of CMC BOAS rails extend transversely from the CMC BOAS base. The CMC BOAS rails are substantially parallel and extend from the first end to the second end. Each CMC BOAS rail has a first pair of holes adjacent the first end and a second pair of holes adjacent the second end. A first metallic rotatable support engages each of the first pair of holes. A second metallic rotatable support engaging each of the second pair of holes. Each of the first and second rotatable metallic supports includes:• a first central support pin and a second central support pin disposed on a first axis, wherein the first and second central support pins are configured to rotate about the first axis when engaged within respective holes (445) on a support (440);• a pair of parallel pins having a first end connected to the first central support pin and a second end connected to the second central support pin, respectively, wherein the pair of parallel pins are configured to engage a respective pair of holes in each CMC BOAS rail.A method of supporting a CMC BOAS is also provided.

Anmelder

Firma

RTX Corporation

Land

🇺🇸 USA