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HPT aerodynamic trip to improve acoustic transmission loss and reduce noise level for auxiliary power unit
HPT aerodynamic trip to improve acoustic transmission loss and reduce noise level for auxiliary power unit
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机译:HPT气动跳闸可改善声传输损失并降低辅助动力装置的噪音水平
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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.
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