A gas turbine engine (10) for an aircraft comprising: an engine core (11) comprising a turbine (19), a compressor (14), and a core shaft (26) connecting the turbine to the compressor; a fan (23) located upstream of the engine core, the fan comprising a plurality of fan blades; a gearbox (30) that receives an input from the core shaft (26) and outputs drive to a fan shaft (36) via an output of the gearbox so as to drive the fan at a lower rotational speed than the core shaft; and a fan shaft mounting structure (503) arranged to mount the fan shaft within the engine, the fan shaft mounting structure (503) comprising at least two supporting bearings (506a, 506b) connected to the fan shaft (36). A fan-gearbox axial distance (110) is defined as the axial distance between the output of the gearbox and the fan axial centreline, the fan-gearbox axial distance being greater than or equal to 0.35 m. A system radial bending stiffness is defined as: 1 1 the radial bending stiffness of the fan shaft mounting structure 503 + 1 the radial bending stiffness of the fan shaft 36 at the output of the gearbox 30 A fan shaft mounting radial bending stiffness ratio of: the system radial bending stiffness the radial bending stiffness of the fan shaft mounting structure 503 is greater than or equal to 3.9*10<6>.

    本发明题为高功率周转齿轮箱及其操作。本公开提供了一种用于飞行器的气体涡轮引擎(10),该气体涡轮引擎包括:引擎核心(11),该引擎核心包括涡轮(19)、压缩机(14)以及将该涡轮连接到该压缩机的芯轴(26);风扇(23),该风扇位于该引擎核心的上游,该风扇包括多个风扇叶片;齿轮箱(30),该齿轮箱从芯轴(26)接收输入并经由齿轮箱的输出端将驱动输出到风扇轴(36),以便以比芯轴低的旋转速度驱动风扇;风扇轴安装结构(503),该风扇轴安装结构被布置成将该风扇轴安装在引擎内,该风扇轴安装结构(503)包括连接到风扇轴(36)的至少两个支撑轴承(506a,506b)。风扇‑齿轮箱轴向距离(110)被定义为该齿轮箱的输出端与该风扇轴向中心线之间的轴向距离,该风扇‑齿轮箱轴向距离大于或等于0.35m。系统径向抗弯刚度被定义为:风扇轴安装径向抗弯刚度比:大于或等于3.9×106。


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    Titel :

    HIGH POWER EPICYCLIC GEARBOX AND OPERATION THEREOF


    Weitere Titelangaben:

    高功率周转齿轮箱及其操作


    Beteiligte:
    SPRUCE MARK (Autor:in)

    Erscheinungsdatum :

    2021-06-08


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    F16H Getriebe , GEARING / B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT / F02C Gasturbinenanlagen , GAS-TURBINE PLANTS / F02K JET-PROPULSION PLANTS , Strahltriebwerke



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