公开(公告)号：US5924632A

公开(公告)日：1999-07-20

申请号：US850572

申请日：1997-05-02

申请人： John M. Seiner ,  Mikhail M. Gilinsky

发明人： John M. Seiner ,  Mikhail M. Gilinsky

IPC分类号： B64D33/04 ,  F02K1/46 ,  F02K1/48 ,  B64C1/38

CPC分类号： F02K1/48 ,  B64D33/06 ,  F02K1/46 ,  F05D2250/611

摘要： A nozzle arrangement includes a nozzle and a centerbody. The longitudinal axis of the centerbody is coaxially aligned with the nozzle. The centerbody has a free end portion shaped to create vortices in exhaust exiting the exit area. The vortices enhance mixing action in the exhaust and reduce exhaust noise while augmenting thrust.

摘要翻译： 喷嘴装置包括喷嘴和中心体。 中心体的纵向轴线与喷嘴同轴对准。 中心体具有形状的自由端部，以在离开出口区域的排气口中产生涡流。 涡流增强排气中的混合动作，并减少排气噪声，同时增加推力。

公开(公告)号：US6082635A

公开(公告)日：2000-07-04

申请号：US848851

申请日：1997-05-02

申请人： John M. Seiner ,  Mikhail M. Gilinsky

发明人： John M. Seiner ,  Mikhail M. Gilinsky

IPC分类号： B64D33/04 ,  F02K1/46 ,  F02K1/48 ,  B63H11/10

CPC分类号： F02K1/46 ,  B64D33/06 ,  F02K1/48 ,  F05D2250/611

摘要： A nozzle having an undulating surface for enhancing the mixing of a primary flow with a secondary flow or ambient air, without requiring an ejector. The nozzle includes a nozzle structure and design for introducing counter-rotating vorticity into the primary flow either through (i) internal surface corrugations where an axisymmetric line through each corrugation is coincident with an axisymmetric line through the center of the flow passageway or (ii) through one or more sets of alternating convexities and cavities in the internal surface of the nozzle where an axisymmetric line through each convexity and cavity is coincident with an axisymmetric line through the center of the flow passageway, and where the convexities contract from the entrance end towards the exit end. Exit area mixing is also enhanced by one or more chevrons attached to the exit edge of the nozzle. The nozzle is ideally suited for application as a jet engine nozzle. When used as a jet engine nozzle, noise suppression with simultaneous thrust augmentation/minimal thrust loss is achieved.

摘要翻译： 喷嘴具有起伏的表面，用于增强主流与二次流或环境空气的混合，而不需要喷射器。 喷嘴包括喷嘴结构和用于通过（i）内表面波纹将反向旋转涡度引入主旋流的设计，其中通过每个波纹的轴对称线与通过流动通道的中心的轴对称线重合，或（ii） 通过喷嘴内表面中的一组或多组交替的凸起和空腔，其中通过每个凸起和空腔的轴对称线与通过流动通道的中心的轴对称线重合，并且凸起从入口端朝向 出口端 出口区域混合也通过一个或多个附着在喷嘴出口边缘的人字形增强。 该喷嘴非常适合用作喷气式发动机喷嘴。 当用作喷气发动机喷嘴时，实现了具有同时推力增加/最小推力损失的噪声抑制。