-
公开(公告)号：US20070033922A1
公开(公告)日：2007-02-15
申请号：US11200616
申请日：2005-08-10
申请人： Ramons Reba , Brian Wake , Satish Narayanan , Thierry Maeder
发明人： Ramons Reba , Brian Wake , Satish Narayanan , Thierry Maeder
IPC分类号： F02K1/38
CPC分类号： F02K1/40 , F02K1/386 , F02K1/46 , F05D2250/611 , F05D2250/70 , F05D2260/96
摘要： A nozzle for a gas turbine engine is provided with undulations on a core and/or fan exhaust flow nozzle. An annular wall defines a fluid flow passage and includes a base portion and an adjoining exit portion. The base portion is typically generally frustoconical in shape and includes an arcuate contour in an axial direction. The exit portion includes undulations in a generally radial direction that provide lobes and troughs each respectively including trailing edges. One of the lobe and trough trailing edges are recessed from the other of the lobe and trough trailing edges in a generally axial direction. The other of the lobe and trough trailing edges form apexes with the apexes provided on tabs. The troughs extend radially inward in the axial direction towards the trough trailing edges.
摘要翻译： 用于燃气涡轮发动机的喷嘴在芯和/或风扇排气流喷嘴上设置有起伏。 环形壁限定流体流动通道并且包括基部和相邻的出口部分。 基部通常在形状上通常为截头圆锥形，并且在轴向方向上包括弧形轮廓。 出口部分包括在大致径向方向上的波纹，其提供每个分别包括后缘的波瓣和波谷。 叶片和槽的后缘中的一个在大致轴向方向上从另一个叶片和槽的后缘凹入。 另一个叶片和槽尾缘形成顶点，顶点设在翼片上。 槽沿着轴向朝向槽的后缘径向向内延伸。
-
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。
-
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。
-
-
搜索结果
3 条记录 (耗时 0.015 秒)