Acoustically shielded exhaust system for high thrust jet engines
    1.
    发明授权
    Acoustically shielded exhaust system for high thrust jet engines 失效
    用于高推力喷气发动机的隔音排气系统

    公开(公告)号:US5402963A

    公开(公告)日:1995-04-04

    申请号:US138569

    申请日:1993-10-18

    摘要: A flade exhaust nozzle for a high thrust jet engine is configured to form an acoustic shield around the core engine exhaust flowstream while supplementing engine thrust during all flight conditions, particularly during takeoff. The flade airflow is converted from an annular 360.degree. flowstream to an arcuate flowstream extending around the lower half of the core engine exhaust flowstream so as to suppress exhaust noise directed at the surrounding community.

    摘要翻译: 用于高推力喷气发动机的溢流排气喷嘴构造成在所有飞行条件下,特别是在起飞期间补充发动机推力,在核心发动机排气流动流周围形成声屏蔽。 苍蝇气流从环形360°流动流转换到围绕核心发动机排气流动流的下半部分延伸的弓形流动流,以便抑制针对周围社区的排气噪声。

    Aircraft pylon
    2.
    发明授权
    Aircraft pylon 失效
    飞机派

    公开(公告)号:US5156353A

    公开(公告)日:1992-10-20

    申请号:US37764

    申请日:1987-04-13

    摘要: An aircraft propulsion system includes at least one pusher propeller mounted to a nacelle mounted to the aircraft by a pylon which produces a wake which impinges upon the propeller. The wake from the pylon is modified to reduce noise and vibration produced by the propeller interaction with the wake. The propulsion system may include a pair of counterrotating pusher propellers.

    摘要翻译: 一种飞行器推进系统包括至少一个推进推进器,其安装到通过塔架安装到飞机上的机舱,其产生撞击在螺旋桨上的尾流。 来自塔架的尾迹被修改以减少螺旋桨与尾流相互作用产生的噪音和振动。 推进系统可以包括一对逆转推进器螺旋桨。