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公开(公告)号:US4773593A
公开(公告)日:1988-09-27
申请号:US45345
申请日:1987-05-04
CPC分类号: F02K1/822 , F01D5/184 , F23R3/002 , F28F13/02 , F05D2260/202 , F23R2900/00005 , Y02T50/676
摘要: A coolable thin metal sheet incorporated in an exhaust nozzle for a gas turbine powered aircraft includes a hot surface, a cool surface and a plurality of triangular sloped depressions which project through the cold gas side of the sheet. Each depression includes a gradually sloped essentially triangular surface which extends gradually in the direction of flow, from a deep, flat faced apex to a flush base, with the apex providing a flat surface perpendicular to the sloped surface. A hole, drilled through the apex admits cooling air which forms a film on the hot gas surface. Utilizing a plurality of such depressions provides precise control of the quantity and direction of cooling gas admitted while allowing use of the thinnest material meeting mechanical requirements, providing optimized film cooling while minimizing nozzle weight.
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公开(公告)号:US5131222A
公开(公告)日:1992-07-21
申请号:US621695
申请日:1990-11-28
IPC分类号: F02K1/82
CPC分类号: F02K1/822 , Y02T50/675
摘要: Flow rate of coolant air is increased upon elevated nozzle gas temperatures to increase nozzle liner cooling effect. A hot side curved plate is superposed over a cold side curved plate which overlays a pressurized cooling air cavity. First and second sets of apertures are formed through the first and second plates respectively. At low temperature operation, the gap between the plates is small and the staggering of the apertures restricts the flow rate of cooling gas through the plates. As temperatures rise, the hot side plate thermally expands and the gap between the plates increases to reduce the mechanical impedance effect of the staggering and to thus increase coolant flow rates.
摘要翻译: 在喷嘴气体温度升高时,冷却剂空气的流量增加,从而增加喷嘴衬套的冷却效果。 热侧弯曲板叠加在覆盖加压冷却空气腔的冷侧弯曲板上。 分别通过第一和第二板形成第一和第二组孔。 在低温运行时,板间的间隙很小,孔的交错限制了冷却气体通过板的流量。 随着温度升高,热侧板热膨胀并且板之间的间隙增加以减小交错的机械阻抗效应并因此增加冷却剂流速。
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公开(公告)号:US5388765A
公开(公告)日:1995-02-14
申请号:US510758
申请日:1990-04-18
CPC分类号: F02K1/12 , F02K1/822 , Y02T50/675
摘要: A planar top plate (32) has film cooling slots (34) therein. A rigid honeycomb structure (38) sealingly joins this top plate with bottom plate (36). Cooling air distributed by openings (50) impinges on the top plate and passes through metering openings (48) to the slots. A flat wall surface with reduced aerodynamic losses is maintained and the uniform support of the top plate avoids local distortion which would crack any heat resistant coating applied thereto.
摘要翻译: 平面顶板(32)中具有薄膜冷却槽(34)。 刚性蜂窝结构(38)将该顶板与底板(36)密封连接。 由开口(50)分布的冷却空气撞击在顶板上并通过计量开口(48)到槽。 保持具有降低的空气动力学损失的平坦壁表面,并且顶板的均匀支撑避免了局部变形,这会使施加到其上的任何耐热涂层开裂。
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公开(公告)号:US4749298A
公开(公告)日:1988-06-07
申请号:US44092
申请日:1987-04-30
申请人: Edgar Bundt , Anthony M. Zimmerman
发明人: Edgar Bundt , Anthony M. Zimmerman
IPC分类号: F02C7/24 , F02K1/82 , F16B5/02 , F16B35/04 , F16B35/06 , F23M5/00 , F23M5/08 , F23R3/06 , F23R3/60 , F16B11/00
CPC分类号: F23R3/60 , F02K1/82 , F16B35/04 , F16B35/06 , Y10S411/02 , Y10T403/17 , Y10T403/18 , Y10T403/25 , Y10T403/75
摘要: A fastener (24) secures a thin sheet liner (16) to a supportive substrate (10) for protection against an adjacent high temperature environment (12). Cooling air (20) flows through a plurality of openings (34) and impinges (36) on the fastener (24). The fastener (24) is received within a dimple (32) in the liner (16) and includes an enlarged head portion (38).
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公开(公告)号:US4800718A
公开(公告)日:1989-01-31
申请号:US946541
申请日:1986-12-24
申请人: Anthony M. Zimmerman
发明人: Anthony M. Zimmerman
CPC分类号: F02K1/822 , F23R3/002 , F23R3/08 , Y02T50/675
摘要: A cooling system for providing a layer of relatively cool gas (28) adjacent the surface of a duct (24) carrying a flow of relatively hot gas (22) includes an elongated louver nozzle (32), an elongated plenum (40) and one or more crosswise dividers (42) for separating the plenum and nozzle into a plurality of individual segments (40, 40a; 32, 32a) having sized supply orifices (44, 44a) disposed therein.
摘要翻译: 用于提供相邻冷气体(28)的冷却系统,所述冷却气体邻近运送相对热气体(22)的管道(24)的表面,包括细长百叶窗喷嘴(32),细长的气室(40)和一个 或更多的横向分隔件(42),用于将集气室和喷嘴分离成具有设置在其中的具有尺寸的供给孔(44,44a)的多个单独段(40,40a,32,32a)。
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