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公开(公告)号:US20070128042A1
公开(公告)日:2007-06-07
申请号:US11295335
申请日:2005-12-06
IPC分类号: B64C11/24
CPC分类号: F01D5/147 , B23P15/04 , F01D5/141 , F01D5/18 , F04D29/324 , F04D29/384 , F04D29/388 , F05D2220/326 , F05D2220/36 , F05D2230/10 , Y02T50/671 , Y02T50/673 , Y02T50/676
摘要: A hollow fan blade for a gas turbine engine provides improved resistance to buckling without adding wall thickness. The hollow fan blade includes a pressure side wall and a suction side wall separated and supported by ribs. In the present invention, each wall segment between each adjacent pair of ribs is straight, not curved. At least some of the adjacent walls segments extend at non-parallel angles relative to one another to form the airfoil shape to the hollow fan blade. The resulting fan blade side walls have faceted surfaces, rather than a continuous smooth, curved surface. The straight wall segments between adjacent ribs can withstand higher compressive forces without buckling. As a result, the wall thickness can be reduced.
摘要翻译: 用于燃气涡轮发动机的中空风扇叶片在不增加壁厚的情况下提供改进的抗弯曲性。 中空风扇叶片包括分隔并由肋支撑的压力侧壁和吸力侧壁。 在本发明中,每个相邻的一对肋之间的每个壁段是直的,而不是弯曲的。 至少一些相邻的壁段相对于彼此以非平行的角度延伸,以形成到中空风扇叶片的翼型形状。 所产生的风扇叶片侧壁具有刻面,而不是连续光滑的弯曲表面。 相邻肋之间的直壁段可承受较高的压缩力而不会弯曲。 结果,可以减小壁厚。