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公开(公告)号：US07114323B2
公开(公告)日：2006-10-03
申请号：US10794968
申请日：2004-03-05
申请人： Robert Schlinker , Satish Narayanan , Wesley K. Lord , Gregory A. Kohlenberg , Ramons Reba , John Simonich , Marios C. Soteriou , Thierry Maeder
发明人： Robert Schlinker , Satish Narayanan , Wesley K. Lord , Gregory A. Kohlenberg , Ramons Reba , John Simonich , Marios C. Soteriou , Thierry Maeder
摘要： A system for reducing jet noise emission from an internally mixed gas turbine engine exhaust, comprising a fan/core flow mixer having a plurality of mixer lobes and a common flow nozzle having an equal number of tabs located along a circumferential edge of an aft end of the nozzle. There is a predetermined clocking relationship between the plurality of mixer lobes and the plurality of nozzle tabs that results in reduced exhaust noise emission, most evident in the lower frequency range. A method for reducing jet noise emission from an internally mixed gas turbine engine exhaust comprises selectively aligning a circumferential distribution of a mixed flow vorticity field produced by a fan/core mixer with a circumferentially distributed exhaust flow vorticity field produced by a modified common flow nozzle at an exit plane of the engine exhaust.
摘要翻译： 一种用于减少来自内部混合燃气涡轮发动机排气的喷射噪声发射的系统，包括具有多个混合器叶片的风扇/芯流混合器和具有相同数量的翼片的公共流动喷嘴，所述翼片沿着沿着 喷嘴。 在多个混合器叶片和多个喷嘴翼片之间存在预定的时钟关系，其导致减少的排气噪声发射，在较低的频率范围中最明显。 一种用于减少内部混合燃气涡轮发动机废气排放的喷射噪声的方法包括：选择性地将由风扇/核心混合器产生的混合涡流场的周向分布与由改进的公共流动喷嘴产生的周向分布的排气涡流场对齐 发动机排气口的出口面。
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公开(公告)号：US20050193716A1
公开(公告)日：2005-09-08
申请号：US10794968
申请日：2004-03-05
申请人： Robert Schlinker , Satish Narayanan , Wesley Lord , Gregory Kohlenberg , Ramons Reba , John Simonich , Marios Soteriou , Thierry Maeder
发明人： Robert Schlinker , Satish Narayanan , Wesley Lord , Gregory Kohlenberg , Ramons Reba , John Simonich , Marios Soteriou , Thierry Maeder
摘要： A system for reducing jet noise emission from an internally mixed gas turbine engine exhaust, comprising a fan/core flow mixer having a plurality of mixer lobes and a common flow nozzle having an equal number of tabs located along a circumferential edge of an aft end of the nozzle. There is a predetermined clocking relationship between the plurality of mixer lobes and the plurality of nozzle tabs that results in reduced exhaust noise emission, most evident in the lower frequency range. A method for reducing jet noise emission from an internally mixed gas turbine engine exhaust comprises selectively aligning a circumferential distribution of a mixed flow vorticity field produced by a fan/core mixer with a circumferentially distributed exhaust flow vorticity field produced by a modified common flow nozzle at an exit plane of the engine exhaust.
摘要翻译： 一种用于减少来自内部混合燃气涡轮发动机排气的喷射噪声发射的系统，包括具有多个混合器叶片的风扇/芯流混合器和具有相同数量的翼片的公共流动喷嘴，所述翼片沿着沿着 喷嘴。 在多个混合器叶片和多个喷嘴翼片之间存在预定的时钟关系，其导致减少的排气噪声发射，在较低的频率范围中最明显。 一种用于减少内部混合燃气涡轮发动机废气排放的喷射噪声的方法包括：选择性地将由风扇/核心混合器产生的混合涡流场的周向分布与由改进的公共流动喷嘴产生的周向分布的排气涡流场对齐 发动机排气口的出口面。
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公开(公告)号：US07520124B2
公开(公告)日：2009-04-21
申请号：US11519606
申请日：2006-09-12
IPC分类号： F02K1/38
CPC分类号： F02K1/48 , B64D33/06 , F02K1/386 , F02K1/827 , Y02T50/671
摘要： An exhaust nozzle for use in a gas turbine engine comprises a flow body for receiving exhaust gas from the turbine engine and includes a leading edge and a trailing edge. The leading edge connects with the gas turbine engine such that the flow body surrounds a centerline of the engine. The trailing edge comprises a serrated portion and a non-serrated portion. The serrated portion is formed from a plurality of tabs for mixing exhaust gas exiting the flow body with gases passing by an exterior of the flow body. The non-serrated portion is positioned along a lower portion of the trailing edge with respect to the engine centerline.
摘要翻译： 用于燃气涡轮发动机的排气喷嘴包括用于从涡轮发动机接收废气并包括前缘和后缘的流体。 前缘与燃气涡轮发动机连接，使得流体围绕发动机的中心线。 后缘包括锯齿状部分和非锯齿形部分。 锯齿形部分由多个翼片形成，用于将从流体体排出的排气与通过流体的外部的气体混合。 非锯齿形部分相对于发动机中心线沿着后缘的下部定位。
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公开(公告)号：US20080060343A1
公开(公告)日：2008-03-13
申请号：US11519606
申请日：2006-09-12
IPC分类号： F02K1/38
CPC分类号： F02K1/48 , B64D33/06 , F02K1/386 , F02K1/827 , Y02T50/671
摘要： An exhaust nozzle for use in a gas turbine engine comprises a flow body for receiving exhaust gas from the turbine engine and includes a leading edge and a trailing edge. The leading edge connects with the gas turbine engine such that the flow body surrounds a centerline of the engine. The trailing edge comprises a serrated portion and a non-serrated portion. The serrated portion is formed from a plurality of tabs for mixing exhaust gas exiting the flow body with gases passing by an exterior of the flow body. The non-serrated portion is positioned along a lower portion of the trailing edge with respect to the engine centerline.
摘要翻译： 用于燃气涡轮发动机的排气喷嘴包括用于从涡轮发动机接收废气并包括前缘和后缘的流体。 前缘与燃气涡轮发动机连接，使得流体围绕发动机的中心线。 后缘包括锯齿状部分和非锯齿形部分。 锯齿形部分由多个翼片形成，用于将从流体体排出的排气与通过流体的外部的气体混合。 非锯齿形部分相对于发动机中心线沿着后缘的下部定位。
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