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    • 96. 发明申请
    • Eccentric exhaust muffler for use with auxiliary power units
    • 用于辅助动力装置的偏心排气消声器
    • US20060180388A1
    • 2006-08-17
    • US11198443
    • 2005-08-05
    • Daniel BrownKyle AsplundJoseph Michalski
    • Daniel BrownKyle AsplundJoseph Michalski
    • F01N1/02
    • F01D25/30B64D41/00B64D2041/002F02C7/24F05D2260/96
    • A muffler system is provided for use with an auxiliary power unit. In one embodiment, and by way of example only, the system includes an outer can, an annular baffle, and a tube. The outer can has a sidewall including a forward end, an aft end, and a cavity extending therebetween. The sidewall is disposed about a first longitudinal axis, and the cavity has a first cross-sectional area and a smaller second cross-sectional area. The annular baffle is coupled to and extends radially inward from the outer can sidewall and has an opening that is disposed about a second longitudinal axis that is non-coincident with the first longitudinal axis. The tube extends through the annular baffle opening and is spaced apart from the annular baffle to define a radial gap therebetween, comprises acoustic material, and has a length and a substantially uniform cross-sectional area along the length.
    • 提供消声器系统以与辅助动力单元一起使用。 在一个实施例中,仅作为示例,该系统包括外罐,环形挡板和管。 外罐具有包括前端,后端和在其间延伸的空腔的侧壁。 侧壁围绕第一纵向轴线设置,并且空腔具有第一横截面面积和较小的第二横截面面积。 环形挡板从外罐侧壁连接并径向向内延伸,并且具有围绕与第一纵向轴线不重合的第二纵向轴线设置的开口。 管延伸穿过环形挡板开口并且与环形挡板间隔开以限定其间的径向间隙,包括声学材料,并且沿长度具有长度和基本均匀的横截面积。
    • 97. 发明申请
    • Aircraft inlet assembly for reducing auxiliary power unit noise
    • 用于减少辅助动力单元噪声的飞机进气口总成
    • US20060163425A1
    • 2006-07-27
    • US11159560
    • 2005-06-22
    • Daniel BrownYogendra Sheoran
    • Daniel BrownYogendra Sheoran
    • B64D33/02
    • F02C7/045B64D33/02B64D41/00B64D2033/0213B64D2041/002F05D2220/50Y02T50/671
    • An aircraft inlet assembly is provided for damping noise from an auxiliary power unit (“APU”) of an aircraft having a tailcone including a sidewall with a first end and a second end, and an end wall coupled to the sidewall first end. The assembly includes a partition disposed within the tailcone and configured to divide the tailcone into a first compartment and a second compartment, the partition including an opening formed therein, an inlet opening formed in the tailcone sidewall in fluid communication with the first compartment, a first inlet duct extending between the inlet opening and the first compartment, an APU disposed within the second compartment, and a second inlet duct extending between the inlet opening and the partition opening to provide communication between the inlet opening and the second compartment.
    • 提供了一种用于阻尼来自具有包括具有第一端和第二端的侧壁的尾巴的飞行器的辅助动力单元(“APU”)的噪声的飞行器入口组件以及耦合到侧壁第一端的端壁。 所述组件包括设置在所述尾管内并被配置为将所述尾塞分成第一隔室和第二隔室的隔板,所述隔板包括形成在其中的开口,形成在所述尾塞侧壁中的与所述第一隔室流体连通的入口开口, 在入口开口和第一隔室之间延伸的入口管道,设置在第二隔室内的APU以及在入口开口和分隔开口之间延伸的第二入口管道,以在入口开口和第二隔室之间提供连通。