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    • 1. 发明公开
    • Aircraft configuration
    • Flugzeugkonfiguration
    • EP2517955A2
    • 2012-10-31
    • EP12160064.7
    • 2012-03-19
    • The Boeing Company
    • Moore, Matthew DBoren, Kelly LMarques, Edward CLan, Justin
    • B64C39/12B64D27/20B64D33/04
    • B64C39/12B64D27/20B64D33/06
    • An aircraft configuration that may reduce the level of roaring jet exhaust noise, infrared radiation, sonic boom, or combination thereof directed towards the ground from an aircraft in flight. The aircraft's nacelles (78,80) are mounted to the aircraft higher than the wings (102,104), with substantially vertical stabilizers (82,84) outboard of the outermost engine. Noise shifting means are provided such as, for each nacelle, primary chevrons (220) at the core nozzle, secondary chevrons (222) at the fan nozzle, a partial bypass mixer (242), a long duct full flow mixer, or a combination thereof to provide a shift in spectrum distribution of jet exhaust noise from lower to higher frequency. Variable geometry chevrons may be used with increased immersion to provide such a shift just during noise-restricted portions of an aircraft flight profile. The aircraft aerodynamic structural surfaces serve as noise shielding barriers that more effectively block or redirect the frequency shifted noise up and away from communities.
    • 一种飞行器配置,其可以降低飞行器中飞行器排气噪声,红外线辐射,声波爆震或其组合的飞行湍流水平。 飞机的机舱(78,80)安装在比翼(102,104)高的飞机上,在最外面的发动机外侧具有大致垂直的稳定器(82,84)。 提供了噪声移动装置,例如,对于每个机舱,在核心喷嘴处的主要人字形(220),在风扇喷嘴处的次级人字形(222),部分旁路混合器(242),长管道全流量混合器或组合 以提供喷射排气噪声的频谱分布从较低频率到较高频率的偏移。 可变几何人字形可以与增加的浸入使用,以在飞机飞行剖面的噪声限制部分期间提供这种移动。 飞机空气动力学结构表面用作噪声屏蔽屏障,可以更有效地阻挡或重定向频移噪声,使其远离社区。
    • 2. 发明公开
    • Aircraft configuration
    • 飞机配置
    • EP2517955A3
    • 2017-08-30
    • EP12160064.7
    • 2012-03-19
    • The Boeing Company
    • Moore, Matthew DBoren, Kelly LMarques, Edward CLan, Justin
    • B64C39/12B64D27/20B64D33/04
    • B64C39/12B64D27/20B64D33/06
    • An aircraft configuration that may reduce the level of roaring jet exhaust noise, infrared radiation, sonic boom, or combination thereof directed towards the ground from an aircraft in flight. The aircraft's nacelles (78,80) are mounted to the aircraft higher than the wings (102,104), with substantially vertical stabilizers (82,84) outboard of the outermost engine. Noise shifting means are provided such as, for each nacelle, primary chevrons (220) at the core nozzle, secondary chevrons (222) at the fan nozzle, a partial bypass mixer (242), a long duct full flow mixer, or a combination thereof to provide a shift in spectrum distribution of jet exhaust noise from lower to higher frequency. Variable geometry chevrons may be used with increased immersion to provide such a shift just during noise-restricted portions of an aircraft flight profile. The aircraft aerodynamic structural surfaces serve as noise shielding barriers that more effectively block or redirect the frequency shifted noise up and away from communities.
    • 一种飞机构造,其可以降低飞行中的飞行器朝向地面的咆哮喷气式排气噪音,红外辐射,音爆或其组合。 飞机的发动机舱(78,80)安装在飞机高于机翼(102,104)的位置,在最外面的发动机的外侧具有基本上垂直的稳定器(82,84)。 噪声转换装置被提供,例如对于每个机舱,核心喷嘴处的主要人字形(220),风扇喷嘴处的次级人字形(222),部分旁路混合器(242),长管道全流混合器或组合 从而提供喷射排气噪声从低频到高频的频谱分布的变化。 变化的几何形状V形可以与浸泡增加一起使用,以在飞机飞行剖面的噪声限制部分提供这样的换档。 飞机的空气动力学结构表面起着隔音屏障的作用,可以更有效地阻止或重定向移频噪音并远离社区。