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1. 发明公开

EP2037126A1 TUBOFAN ENGINE 审中-公开
标题翻译： TUBOFAN发动机
公开(公告)号：EP2037126A1
公开(公告)日：2009-03-18
申请号：EP07741180.9
申请日：2007-04-06
申请人： IHI Corporation
发明人： KODAMA, Hidekazu , GOTO, Shinya , MIZUTA, Ikuhisa , MUROOKA, Takeshi
IPC分类号： F04D29/38 , F02K3/06
CPC分类号： F04D29/384 , F01D5/141 , Y02T50/671 , Y02T50/673
摘要： A hub-side leading edge part of a fan first-stage rotating blade 10 for taking an air thereinto more extends in a forward direction of an engine than a tip-side leading edge part and a mid-span leading edge part. The hub side of the fan first-stage rotating blade 10 is integrally connected as one with the tip side and the mid span while having a longer chord length than those of the tip side and the mid span. A radius at a root of the hub-side leading edge part is set in a boss ratio of 0 to 0.4.
摘要翻译：用于将空气吸入其中的风扇第一级旋转叶片10的轮毂侧前缘部分比前端侧前缘部分和中间跨度前缘部分更向发动机的前方延伸。风扇第一级旋转叶片10的轮毂侧与前端侧和中间跨度一体连接，同时具有比翼尖侧和中间跨度更长的弦长。轮毂侧前缘部的根部的半径设定为0〜0.4的轮毂比。

2. 发明公开

EP2022988A1 MOVING BLADE OF TURBOFAN ENGINE 审中-公开
标题翻译： BEWEGLICHE SCHAUFELFÜREIN MANTELSTROMTRIEBWERK
公开(公告)号：EP2022988A1
公开(公告)日：2009-02-11
申请号：EP07739607.5
申请日：2007-03-26
申请人： IHI Corporation
发明人： MUROOKA, Takeshi , MIZUTA, Ikuhisa
IPC分类号： F04D29/38 , F02K3/06
CPC分类号： F04D29/384 , F01D5/141 , F04D29/324 , Y02T50/671 , Y02T50/673
摘要： [OBJECT]
An object of the invention is to provide a fan rotating blade for a turbofan engine capable of increasing a bypass ratio by increasing an intake air flow rate without enlarging a diameter of a fan and an inner diameter of a casing and of realizing a decrease in weight of an engine as well as a decrease in fuel consumption and noise.
[MEANS FOR SOLVING THE PROBLEMS]
A leading edge part 11 of a fan rotating blade 10 for taking air thereinto is provided with a vertical hub portion 12 positioned on the hub side so as to be substantially perpendicular to a fan rotary shaft, a backward mid-span portion 13 inclined toward the downstream side from the hub side to the mid-span portion, and a forward inclined tip portion 14 inclined toward the upstream side from the mid-span side to the tip portion.
摘要翻译：本发明的目的是提供一种用于涡轮风扇发动机的风扇旋转叶片，其能够通过在不扩大风扇直径和壳体的内径的同时增加进气流量来增加旁路比，并且实现发动机的重量减少以及燃料消耗和噪音的降低。用于解决问题的手段用于吸入空气的风扇旋转叶片10的前缘部11设置有位于轮毂侧的垂直毂部12，其大致垂直于风扇旋转轴，向后中间跨越从轮毂侧到中跨部分的下游侧倾斜的跨越部分13，以及从中跨侧到顶端部分向上游侧倾斜的前倾斜尖端部分14。

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