公开(公告)号：US09683516B2

公开(公告)日：2017-06-20

申请号：US14363508

申请日：2012-12-04

Applicant: SNECMA

Inventor： Matthieu Leyko ,  Jean Bertucchi ,  Mathieu Gaillot

IPC: F02K1/00 ,  F02K1/82 ,  F02K3/06

CPC classification number: F02K1/00 ,  F02K1/82 ,  F02K3/06 ,  F05D2250/71

Abstract: A turbine engine convergent-divergent nozzle including an annular central element and an annular cap arranged coaxially around the central element to co-operate with the central element to define an annular flow channel for a gas stream from the engine. Between a throat section and an ejection section of the nozzle, the central element and the cap present respective internal profiles in longitudinal section that are modeled by curves having respective radii of curvature that are identical in absolute value.

公开(公告)号：US20150033747A1

公开(公告)日：2015-02-05

申请号：US14363508

申请日：2012-12-04

Applicant: SNECMA

Inventor： Matthieu Leyko ,  Jean Bertucchi ,  Mathieu Gaillot

IPC: F02K1/00

CPC classification number: F02K1/00 ,  F02K1/82 ,  F02K3/06 ,  F05D2250/71

Abstract: A turbine engine convergent-divergent nozzle including an annular central element and an annular cap arranged coaxially around the central element to co-operate with the central element to define an annular flow channel for a gas stream from the engine. Between a throat section and an ejection section of the nozzle, the central element and the cap present respective internal profiles in longitudinal section that are modeled by curves having respective radii of curvature that are identical in absolute value.

Abstract translation: 涡轮发动机会聚发散喷嘴，包括环形中心元件和环形盖，该环形中心元件和环形盖同轴地布置在中心元件周围，以与中心元件配合以限定用于来自发动机的气流的环形流动通道。 在喉部和喷嘴的喷射部分之间，中心元件和帽在纵向截面中呈现相应的内部轮廓，该曲线由具有相同绝对值相同的曲率半径的曲线建模。