公开(公告)号：US09617954B2

公开(公告)日：2017-04-11

申请号：US14346602

申请日：2012-09-24

Applicant: SNECMA

Inventor： Alexandre Alfred Gaston Vuillemin ,  Guillaume Bodard ,  Sebastien Jean-Paul Aeberli

IPC: F02K1/28 ,  F02K1/34 ,  F02K1/30 ,  F02K3/02 ,  F02K3/075 ,  F02K1/46 ,  F02K1/38

CPC classification number: F02K1/34 ,  F02K1/28 ,  F02K1/30 ,  F02K1/38 ,  F02K1/386 ,  F02K1/46 ,  F02K3/025 ,  F02K3/075 ,  Y02T50/671

Abstract: The invention relates to a primary cowl for a turbofan comprising a primary body generating a primary stream to be ejected through a primary nozzle, and a secondary body generating a secondary stream to be ejected through a secondary nozzle, the primary cowl being shaped so as to be positioned downstream from the primary body and to define, on the inside of the turbofan, the path followed by the primary stream downstream from the primary nozzle and, on the outside, the path followed by the secondary stream downstream from the secondary nozzle. The primary cowl comprises a coupling to a system for supplying a pressurized gas and at least one perforation for injecting the pressurized gas, through the perforation, into the secondary stream. The primary cowl preferably comprises a ring which has perforations and which is rotated about the axis of rotation of the turbofan.

公开(公告)号：US20140245715A1

公开(公告)日：2014-09-04

申请号：US14346602

申请日：2012-09-24

Applicant: SNECMA

Inventor： Alexandre Alfred Gaston Vuillemin ,  Guillaume Bodard ,  Sebastien Jean-Paul Aeberli

IPC: F02K1/34 ,  F02K3/02 ,  F02K1/38

CPC classification number: F02K1/34 ,  F02K1/28 ,  F02K1/30 ,  F02K1/38 ,  F02K1/386 ,  F02K1/46 ,  F02K3/025 ,  F02K3/075 ,  Y02T50/671

Abstract: The invention relates to a primary cowl for a turbofan comprising a primary body generating a primary stream to be ejected through a primary nozzle, and a secondary body generating a secondary stream to be ejected through a secondary nozzle, the primary cowl being shaped so as to be positioned downstream from the primary body and to define, on the inside of the turbofan, the path followed by the primary stream downstream from the primary nozzle and, on the outside, the path followed by the secondary stream downstream from the secondary nozzle. The primary cowl comprises a coupling to a system for supplying a pressurised gas and at least one perforation for injecting the pressurised gas, through the perforation, into the secondary stream. The primary cowl preferably comprises a ring which has perforations and which is rotated about the axis of rotation of the turbofan.

Abstract translation: 本发明涉及一种用于涡轮风扇的主罩，其包括主体，其产生要通过主喷嘴喷射的主流，以及产生要通过次喷嘴喷射的次流的次体，该主罩被成形为 位于主体的下游并且在涡轮风扇的内侧上限定了从主喷嘴下游的初级流的路径，并且在外部将辅助流的下游路径跟随在二次喷嘴的下游。 主罩包括与用于供应加压气体的系统的联接件和用于将加压气体通过穿孔注入次流中的至少一个穿孔。 主罩盖优选地包括具有穿孔并且围绕涡轮风扇的旋转轴线旋转的环。