Flugzeugtriebwerk mit Schmiermittelsystem mit Windmühlenkonfiguration

Details

Veröffentlichungs-Nr.

EP4818479

Anmeldetag

2. April 2026

Veröffentlichung

7. Oktober 2026

Rechtsraum

EP

Abstract

An aircraft engine has: a low-pressure assembly having first components (C1) having first inlets (I1) and first scavenge outlets (S1); a high-pressure spool having second components (C2) having second inlets (I2) and second scavenge outlets (S2); a lubricant system (300A) having: a lubricant tank (301); a main pump (302) and a scavenge pump (303) operable to drive a flow of the lubricant; a secondary pump (310); and valves (312,313); the lubricant system (300A) having: a standard configuration in which the valves (312,313) define a standard flow path extending from the lubricant tank (301) to the first inlets (I1) and the second inlets (I2) via the main pump (302); and a windmilling configuration in which the valves (312,313) define a windmilling flow path extending from a lubricant source to the first inlets (I1) via the secondary pump (310) while bypassing the main pump (302), and from the first scavenge outlets (S1) to the lubricant source while bypassing the scavenge pump (303).

Anmelder

Firma

Pratt & Whitney Canada Corp.

Land

🇨🇦 Kanada