A propulsion system (18) for an aircraft, comprising: a gas turbine engine having at least a high pressure (HP) spool (24) and a low pressure (LP) spool (26), wherein the LP spool (26) is operative to drive a propulsor (28); and a hybrid auxiliary power unit (APU) (22) mechanically coupled to both the HP spool (24) and the LP spool (26), wherein the hybrid APU (22) includes an APU compressor (60); an APU turbine (64); and a fuel cell (62) fluidly disposed between the APU compressor (60) and the APU turbine (64), wherein the fuell cell (62) is operative to receive as an oxidant air pressurized by the APU compressor (60); to generate electrical power using a fuel and the oxidant; to heat the air pressurized by the APU compressor (60); and to discharge the heated pressurized air into the APU turbine (64), wherein the hybrid APU (22) is operative to supply rotational power to both the HP spool (24) and the LP spool (26).


    Access

    Download


    Export, share and cite



    Title :

    Propulsion system for an aircraft, aircraft and method of operating a propulsion system


    Additional title:

    Antriebssystem für ein Flugzeug sowie Verfahren zum Betreib eines Antriebssystems
    Système de propulsion pour avion et procédé d'opération d'un tel système


    Contributors:

    Publication date :

    2018-10-31


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT / F02C Gasturbinenanlagen , GAS-TURBINE PLANTS



    AIRCRAFT PROPULSION SYSTEM

    WALPOLE STEVE | European Patent Office | 2025

    Free access

    Aircraft propulsion system

    HARWOOD RICHARD / MENON KALYANI G / PALMER JOSEPH et al. | European Patent Office | 2023

    Free access

    Aircraft propulsion system

    SONNETTE PIERRE-JULIEN / RENOTTE ALEXIS / LINCK BENOIT | European Patent Office | 2023

    Free access

    AIRCRAFT PROPULSION SYSTEM

    TASKER RICHARD V / RIX ANDREW I J | European Patent Office | 2023

    Free access

    AIRCRAFT PROPULSION SYSTEM

    OTA AKIRA | European Patent Office | 2022

    Free access