Blade
    1.
    发明授权
    Blade 有权

    公开(公告)号:US08821119B2

    公开(公告)日:2014-09-02

    申请号:US13799730

    申请日:2013-03-13

    CPC classification number: F01D5/147 F01D5/14 F01D21/045 F05D2300/612

    Abstract: A fan blade for a gas turbine engine has an aerofoil part and a root part. The root part includes a root former; the root former includes a zone of weakness, which reduces the ability of the root part to withstand an impact force. Thus, in an impact situation in which the fan blade has separated from the fan rotor and the fan blade has itself separated into fragments, the root part will fracture or buckle more easily than would be the case with conventional arrangements. This will lower the impact force of the root part upon the fan casing, thus permitting the fan casing to be designed to withstand lower impact forces. The fan casing can therefore be made lighter, and cheaper, than in conventional arrangements.

    Abstract translation: 用于燃气涡轮发动机的风扇叶片具有机翼部分和根部部分。 根部包括根部; 根部部分包括一个弱点,这降低了根部抵抗冲击力的能力。 因此,在风扇叶片与风扇转子分离并且风扇叶片本身分离成碎片的冲击情况下,根部将比常规布置的情况更容易断裂或弯曲。 这将降低根部对风扇壳体的冲击力,从而允许风扇壳体设计成承受较低的冲击力。 因此,风扇壳体可以比常规布置更轻,更便宜。

    BLADE
    2.
    发明申请
    BLADE 有权

    公开(公告)号:US20130236320A1

    公开(公告)日:2013-09-12

    申请号:US13799730

    申请日:2013-03-13

    CPC classification number: F01D5/147 F01D5/14 F01D21/045 F05D2300/612

    Abstract: A fan blade for a gas turbine engine has an aerofoil part and a root part. The root part includes a root former; the root former includes a zone of weakness, which reduces the ability of the root part to withstand an impact force. Thus, in an impact situation in which the fan blade has separated from the fan rotor and the fan blade has itself separated into fragments, the root part will fracture or buckle more easily than would be the case with conventional arrangements. This will lower the impact force of the root part upon the fan casing, thus permitting the fan casing to be designed to withstand lower impact forces. The fan casing can therefore be made lighter, and cheaper, than in conventional arrangements.

    Abstract translation: 用于燃气涡轮发动机的风扇叶片具有机翼部分和根部部分。 根部包括根部; 根部部分包括一个弱点,这降低了根部抵抗冲击力的能力。 因此,在风扇叶片与风扇转子分离并且风扇叶片本身分离成碎片的冲击情况下,根部将比常规布置的情况更容易断裂或弯曲。 这将降低根部对风扇壳体的冲击力,从而允许风扇壳体设计成承受较低的冲击力。 因此,风扇壳体可以比常规布置更轻,更便宜。

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