公开(公告)号：US20140373550A1

公开(公告)日：2014-12-25

申请号：US14326160

申请日：2014-07-08

Applicant: SNECMA ,  Centre National De Recherche Scientifique (CNRS) ,  UNIVERSITE DE POITIERS ,  ENSMA

Inventor： Alexandre Alfred Gaston VUILLEMIN ,  Maxime KOENIG ,  Peter JORDAN ,  Pierre COMTE ,  Yves GERVAIS

IPC: F02K1/34 ,  F02K1/46

CPC classification number: F02K1/34 ,  F02K1/46 ,  F02K3/06 ,  F05D2250/411 ,  F05D2260/962 ,  Y02T50/671

Abstract: The invention relates to a rear casing for a turbine engine comprising a primary body generating a primary flow (10) to be ejected through a primary nozzle (6), said rear casing (7) being shaped so as to be positioned downstream from the primary body and to define, on the inside of the turbine engine, the path followed by the primary flow downstream from the primary nozzle (6). The tail cone is characterised in that it comprises a connection to a system for supplying a pressurised gas and at least one perforation (8) for injecting the pressurised gas through the perforation and into the primary flow. The casing preferably comprises at least one means for rotating same about the axis of rotation of the mobile elements of the primary body.

Abstract translation: 本发明涉及一种用于涡轮发动机的后壳体，其包括主体，其产生要通过主喷嘴（6）喷射的主流（10），所述后壳体（7）成形为定位在主流体 并且在涡轮发动机的内侧上限定从主喷嘴（6）下游的主流跟随的路径。 尾锥的特征在于，其包括与用于供应加压气体的系统的连接以及用于通过穿孔将压缩气体注入主流的至少一个穿孔（8）。 壳体优选地包括至少一个用于围绕主体的可移动元件的旋转轴线旋转的装置。

公开(公告)号：US20140090359A1

公开(公告)日：2014-04-03

申请号：US14035113

申请日：2013-09-24

Applicant: SNECMA

Inventor： Norman JODET ,  Guillaume BODARD ,  Cyprien Georges Eric HENRY ,  Maxime KOENIG

IPC: F02K1/34

CPC classification number: F02K1/34 ,  F02K1/48 ,  Y02T50/671

Abstract: The invention provides a mixer for a confluent-flow nozzle of a turbine engine, the mixer comprising an annular cap designed to be centered on a longitudinal axis of the nozzle and having a stationary upstream portion and a downstream portion that is movable in rotation about the longitudinal axis relative to the stationary portion, the movable portion of the cap terminating at its downstream end in inner lobes alternating circumferentially with outer lobes, and means for imparting reciprocating rotary motion to the movable portion of the cap.

Abstract translation: 本发明提供了一种用于涡轮发动机的汇流流动喷嘴的混合器，该混合器包括设计成以喷嘴的纵向轴线为中心的环形盖，并具有固定的上游部分和可围绕 纵向轴线相对于静止部分，帽的可移动部分在其下部端部终止于内部裂片，其周向与外部凸角交替，以及用于向帽的可移动部分进行往复旋转运动的装置。

公开(公告)号：US20160215727A1

公开(公告)日：2016-07-28

申请号：US14914235

申请日：2014-09-09

Applicant: SNECMA

Inventor： Jonathan LANGRIDGE ,  Guillaume BODARD ,  Irwin KERNEMP ,  Maxime KOENIG ,  Julien SZYDLOWSKI

IPC: F02K1/34 ,  F02K1/38

CPC classification number: F02K1/34 ,  F02K1/386 ,  F02K1/48 ,  F05D2260/96

Abstract: The invention concerns an afterbody for a mixed-flow turbojet engine having a central axis (LL), comprising a lobed mixer (6), having alternating hot lobes (12) projecting into the secondary flow (F2) and cold lobes (13) penetrating into the primary flow (F1), and a nozzle (1) comprising, on the trailing edge (14) of same, longitudinal indentations (15) defining a crown of noise-reducing chevrons (7), characterised in that, at a predefined abscissa (X5) on the central axis (LL) downstream from the lobed mixer (6), the inner wall (2) of the nozzle (1) has a neck where the surface area of the transverse passage section of a flow into the nozzle passes through a minimum, and in that, downstream from this predefined abscissa (X5), the radius of the inner wall (2) of the nozzle (1) varies between the indentations (15) and the chevrons (7) so as to produce, in the flow, in the vicinity of said crown of chevrons (7), azimuth fluctuations of the Mach number. It also concerns a method for designing such an afterbody that comprises setting the azimuth of the lobed mixer (6) and of the chevrons (7).

Abstract translation: 本发明涉及一种具有中心轴线（LL）的混合涡轮喷气发动机的后箱，包括一个具有突出于二次流（F2）中的交替热叶片（12）和叶片（13）的叶状混合器（6） 在主流体（F1）中，以及喷嘴（1），其在其后缘（14）上包括限定减噪人字形（7）的冠部的纵向凹口（15），其特征在于，在预定义 横轴（X5）在叶片混合器（6）下游的中心轴线（LL）上，喷嘴（1）的内壁（2）具有颈部，其中流入喷嘴的流动横截面的表面积 （X5）的下游，喷嘴（1）的内壁（2）的半径在凹陷（15）和人字形（7）之间变化，从而产生 ，在流动中，在所述人字形冠（7）附近，马赫数的方位波动。 它还涉及一种用于设计这样的后体的方法，其包括设定叶片混合器（6）和人字形（7）的方位角。