Startverfahren für Gasturbinenmotor

Details

Veröffentlichungs-Nr.

EP4495401

Aktenzeichen

EP24187440

Anmeldetag

9. Juli 2024

Veröffentlichung

22. Januar 2025

Rechtsraum

EP

IPC

F02C3/22F01D19/00F02C9/40

Abstract

A method of starting a liquid hydrogen fuelled gas turbine engine (103) of an aircraft propulsion system. The aircraft propulsion system comprises a hydrogen storage tank (104) configured to store liquid hydrogen, a liquid hydrogen pump (205) configured to pump hydrogen in at least a liquid state, a core combustor (203) configured to receive hydrogen fuel from the hydrogen fuel pump (205), and a hydrogen fuel vent (214) provided downstream of the liquid hydrogen pump (205), and configured to selectively vent hydrogen fuel. The method comprises, in a liquid priming step, flowing hydrogen from the hydrogen storage tank (104) through the liquid hydrogen pump (205) and venting hydrogen through the hydrogen fuel vent (214) until the hydrogen pump (205) is primed with liquid hydrogen, then, in a liquid pumping step, operating the liquid hydrogen pump (205) to pump liquid hydrogen to the core combustor (203) at a required flow rate and pressure for engine ignition in an engine ignition step.

Anmelder

Firma

Rolls-Royce plc

Land

🇬🇧 Großbritannien

Fachgebiete