发明名称 HPT aerodynamic trip to improve acoustic transmission loss and reduce noise level for auxiliary power unit
摘要 A method and device for decoupling combustor attenuation and pressure fluctuation from turbine attenuation and pressure fluctuation in a gas turbine engine. The engine has: a compressor; a combustor; and a turbine, that generate a flow of hot gas from the combustor to the turbine. An aerodynamic trip is disposed in at least one of; a combustor wall; and an inner shroud of the nozzle guide vane ring, and is adapted to emit jets of compressed air from cross flow ports into the flow of hot gas from the combustor. The air jets from the cross flow ports increase turbulence and equalize temperature distribution in addition to decoupling the attenuation and pressure fluctuations between the combustor and the turbine.
申请公布号 US7533534(B2) 申请公布日期 2009.05.19
申请号 US20070797416 申请日期 2007.05.03
申请人 PRATT & WHITNEY CANADA CORP. 发明人 ALKABIE HISHAM
分类号 F02C7/18;F01D9/02 主分类号 F02C7/18
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