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公开(公告)号:US5613649A
公开(公告)日:1997-03-25
申请号:US278439
申请日:1994-07-21
CPC分类号: F01D5/148 , F04D29/663 , Y02T50/671 , Y02T50/673
摘要: Acoustic noise resulting from the interaction of a periodic pressure and velocity fluctuation induced by a periodically passing blade wake interacting with a downstream airfoil (10)is attenuated by locating an antisymmetric pressure wave generator (30) adjacent the leading edge (18) of the vane (10).
摘要翻译: 由周期性压力和与下游翼型(10)相互作用的周期性通过的叶片尾流引起的速度波动的相互作用产生的声音噪声通过邻近叶片的前缘(18)定位反对称压力波发生器(30)来衰减 (10)。
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公开(公告)号:US5420383A
公开(公告)日:1995-05-30
申请号:US141447
申请日:1993-10-22
CPC分类号: F04D29/681 , F04D29/663 , F05B2260/962
摘要: An arrangement for cancelling unwanted noise generated by sequential blade rows (16, 18) in a gas turbine engine (10) includes a plurality of acoustic sources (52) disposed on the blades (36-42) of the downstream row (18).
摘要翻译: 用于消除燃气涡轮发动机(10)中由顺序叶片排(16,18)产生的不希望的噪声的装置包括设置在下游排(18)的叶片(36-42)上的多个声源(52)。
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