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1. 发明申请

WO2015012920A2 SECONDARY NOZZLE FOR JET ENGINE 审中-公开
标题翻译：喷气发动机二次喷嘴
公开(公告)号：WO2015012920A2
公开(公告)日：2015-01-29
申请号：PCT/US2014035499
申请日：2014-04-25
申请人： GEN ELECTRIC
发明人： DAWSON DAVID LYNN , LARIVIERE ERIN LEE , PETERSEN BRIAN JOSEPH , ELLERHORST ROBERT JEROME
IPC分类号： F02K3/075
CPC分类号： F02K3/077 , F02K1/1292 , F02K1/822 , F02K3/025 , F02K3/075 , Y02T50/672 , Y02T50/675
摘要： A third stream duct producing a third air stream at reduced pressure that is exhausted through a separate nozzle that is concentric with the main or primary engine nozzle. The third stream exhaust air from the separate concentric, nozzle is exhausted to a location at which pressure is ambient or sub-ambient. The location at which the third stream air is exhausted contributes to the thrust of the aircraft. The airstream from the third air duct is exhausted through an exhaust nozzle of the third duct that is positioned at the interface between the aft of the airframe and the leading edge of the engine outer flaps. This location is a low pressure region that has a recirculation zone. The exhaust of third stream air to this low pressure region substantially reduces or eliminates this recirculation zone and associated boat tail drag, thereby improving the efficiency of the engine.
摘要翻译：第三流管道，其在减压下产生通过与主发动机喷嘴或主发动机喷嘴同心的单独喷嘴排出的第三气流。来自分离的同心喷嘴的第三流排气被排出到压力为环境或亚环境的位置。第三流空气排出的位置有助于飞机的推力。来自第三空气管道的气流通过位于机身后部与发动机外翼片前缘之间的界面处的第三管道的排气喷嘴排出。该位置是具有再循环区域的低压区域。向该低压区域排出第三流空气基本上减少或消除了该再循环区域和相关联的船尾阻力，从而提高了发动机的效率。

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