The invention provides a high power epicyclic gearbox and operation thereof. 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) so as to drive the fan at a lower rotational speed than the core shaft, the gearbox (30) being an epicyclic gearbox (30) comprising a sun gear (28), a plurality of planet gears (32), a ring gear (38), and a planet carrier (34) arranged to have the plurality of planet gears (32) mounted thereon; and a gearbox support (40) arranged to at least partially support the gearbox (30) within the engine. The moment of inertia of the fan (23) is greater than or equal to 7.40x107 kgm2. A radial bending stiffness to moment of inertia ratio of: the radial bending stiffness of at least one of the fan shaft 36 at the output of the gearbox and the gearbox support 40 the moment of inertia of the fan 23 is in the range of from is greater than or equal to 2.5x10-2 Nkg-1m-3. A tilt stiffness to moment of inertia ratio of: the tilt stiffness of at least one of the fan shaft 36 at the output of the gearbox and the gearbox support 40 the moment of inertia of the fan 23 is greater than or equal to 4.0x10-4 Nrad-1kg-1m-1.

    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),该齿轮箱接收来自该芯轴(26)的输入,并且将驱动输出至风扇轴(36),以便以比该芯轴低的旋转速度驱动该风扇,该齿轮箱(30)是周转齿轮箱(30),该周转齿轮箱包括太阳齿轮(28)、多个行星齿轮(32)、环形齿轮(38)以及被布置用于将该行星齿轮(32)安装在其上的行星架(34);以及齿轮箱支撑件(40),该齿轮箱支撑件被布置用于至少部分地支撑该引擎内的齿轮箱(30)。该风扇(23)的惯性矩大于或等于7.40×107kgm2;径向抗弯刚度与惯性矩的比率:大于或等于2.5×10‑2Nkg‑1m‑3。抗倾刚度与惯性矩的比率:大于或等于4.0×10‑4Nrad‑1kg‑1m‑1。


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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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