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1. 发明授权

US4720901A Method of positioning an aircraft jet engine noise suppressor in a convergent jet engine nozzle 失效
标题翻译：将飞机喷气发动机噪声抑制器定位在会聚式喷气发动机喷嘴中的方法
公开(公告)号：US4720901A
公开(公告)日：1988-01-26
申请号：US797152
申请日：1985-11-12
申请人： Joseph M. Johnson , Russell L. Thornock
发明人： Joseph M. Johnson , Russell L. Thornock
IPC分类号： F02K1/38 , B21D53/00
CPC分类号： F02K1/38 , F05D2250/323 , Y10T29/49346 , Y10T29/49398 , Y10T29/49826
摘要： A combination convergent jet engine aircraft nozzle (86, 142, 146) and a ventilation tube (88, 136, 144) are fixed in place and have no moving parts. Ambient air is entrained through duct inlets (96, 140, 154, 160), through the nozzle walls, through hollow struts (90, 138), the struts supporting and being connected to a hollow central tube (102, 144) or a plurality of tubes (136), to adjacent the downstream end of the nozzle to mix at takeoff with the jet forming gas exhaust. The ducts (102, 136, 144) are positioned with respect to the nozzle exhaust so that entrained ambient air flows into the gas exhaust during takeoff and so that the ambient air flow is substantially restricted or shut off during cruise flight. Ambient air inlet openings (160) are formed as a porous surface, the holes through the surface being generally in the shape of louvers (166) of which downstream end portions (174) are depressed inwardly of the outer wall surface of the nozzle to provide a minimum drag along the outer nozzle periphery during cruise flight and at takeoff.A method of positioning and fixing the outlet end of a noise suppressor within a convergent nozzle so that entrained ambient air flows into the gas exhaust during takeoff to substantially reduce the engine noise and so that ambient air is substantially restricted or is shut off entirely during cruise flight.The method in which ambient air is entrained in a noise suppressor within a convergent nozzle and is exited downstream adjacent the nozzle downstream end to mix with the gas exhaust during takeoff to suppress the engine noise, and at cruise flight substantially restricting or shutting off the ambient air through the noise suppressor by turning engine exhaust gas toward the noise suppressor axis downstream of the ambient air exit.
摘要翻译：组合收敛喷气发动机飞机喷嘴（86,142,146）和通风管（88,136,144）固定就位并且没有移动部件。环境空气通过管道入口（96,140,154,160）通过喷嘴壁通过中空支柱（90,138）夹带，支柱支撑并连接到中空中心管（102,144）或多个的管（136），以与喷嘴的下游端相邻以在起飞时与喷射形成气体排气混合。管道（102,136,144）相对于喷嘴排气口定位，使得夹带的环境空气在起飞期间流入排气中，并且使得环境空气流在巡航飞行期间基本上被限制或关闭。环境空气入口（160）形成为多孔表面，通过该表面的孔通常为百叶窗（166）的形状，下游端部（174）在喷嘴的外壁表面向内凹入，从而提供在巡航飞行期间和起飞时沿外喷嘴周边的最小阻力。一种在收敛喷嘴内定位和固定噪声抑制器的出口端的方法，使得夹带的环境空气在起飞期间流入气体排气中，以显着降低发动机噪声，并且使环境空气基本上受到限制，或者在巡航期间完全关闭飞行。环境空气被夹带在会聚喷嘴内的噪声抑制器中并且在喷嘴下游端附近离开下游的方法，以在起飞期间与排气混合以抑制发动机噪声，并且在巡航飞行时基本上限制或切断环境通过将发动机废气转向环境空气出口下游的噪声抑制器轴，通过噪声抑制器进行空气。

2. 发明授权

US4567960A Fixed geometry controlled entrainment ventilated convergent nozzle and method 失效
标题翻译：固定几何控制夹带通风收敛喷嘴和方法
公开(公告)号：US4567960A
公开(公告)日：1986-02-04
申请号：US410525
申请日：1982-08-23
申请人： Joseph M. Johnson , Russell L. Thornock
发明人： Joseph M. Johnson , Russell L. Thornock
IPC分类号： F02K1/38 , F01N1/14
CPC分类号： F02K1/38 , F05D2250/323
摘要： A combination convergent jet engine aircraft nozzle (86, 142, 146) and a ventilation tube (88, 136, 144) are fixed in place and have no moving parts. Ambient air is entrained through duct inlets (96, 140, 154, 160), through the nozzle walls, through hollow struts (90, 138), the struts supporting and being connected to a hollow central tube (102, 144) or a plurality of tubes (136), to adjacent the downstream end of the nozzle to mix at takeoff with the jet forming gas exhaust. The ducts (102, 136, 144) are positioned with respect to the nozzle exhaust so that entrained ambient air flows into the gas exhaust during takeoff and so that the ambient air flow is substantially restricted or shut off during cruise flight. Ambient air inlet openings (160) are formed as a porous surface, the holes through the surface being generally in the shape of louvers (166) of which downstream end portions (174) are depressed inwardly of the outer wall surface of the nozzle to provide a minimum drag along the outer nozzle periphery during cruise flight and at takeoff.A method of positioning and fixing the outlet end of a noise suppressor within a convergent nozzle so that entrained ambient air flows into the gas exhaust during takeoff to substantially reduce the engine noise and so that ambient air is substantially restricted or is shut off entirely during cruise flight.The method in which ambient air is entrained in a noise suppressor within a convergent nozzle and is exited downstream adjacent the nozzle downstream end to mix with the gas exhaust during takeoff to suppress the engine noise, and at cruise flight substantially restricting or shutting off the ambient air through the noise suppressor by turning engine exhaust gas toward the noise suppressor axis downstream of the ambient air exit.
摘要翻译：组合收敛喷气发动机飞机喷嘴（86,142,146）和通风管（88,136,144）固定就位并且没有移动部件。环境空气通过管道入口（96,140,154,160）通过喷嘴壁通过中空支柱（90,138）夹带，支柱支撑并连接到中空中心管（102,144）或多个的管（136），以与喷嘴的下游端相邻以在起飞时与喷射形成气体排气混合。管道（102,136,144）相对于喷嘴排气口定位，使得夹带的环境空气在起飞期间流入排气中，并且使得环境空气流在巡航飞行期间基本上被限制或关闭。环境空气入口（160）形成为多孔表面，通过该表面的孔通常为百叶窗（166）的形状，下游端部（174）在喷嘴的外壁表面向内凹入，从而提供在巡航飞行期间和起飞时沿外喷嘴周边的最小阻力。一种在收敛喷嘴内定位和固定噪声抑制器的出口端的方法，使得夹带的环境空气在起飞期间流入气体排气中，以显着降低发动机噪声，并且使环境空气基本上受到限制，或者在巡航期间完全关闭飞行。环境空气被夹带在会聚喷嘴内的噪声抑制器中并且在喷嘴下游端附近离开下游的方法，以在起飞期间与排气混合以抑制发动机噪声，并且在巡航飞行时基本上限制或切断环境通过将发动机废气转向环境空气出口下游的噪声抑制器轴，通过噪声抑制器进行空气。

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