Turbofan engine core noise source diagnosticsThe paper describes a turbofan-engine measurement program utilizing a variety of diagnostic techniques to identify a source of core-generated noise which contributes to the overall external engine noise characteristics. Included in the turbofan engine diagnostics are data examination, time domain correlation, and frequency domain analysis. It is found that the turbulent pressure fluctuations within the combustor are a source for core noise which propagates through the nozzle and radiates to the far-field.
Document ID
19880052480
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Karchmer, Allen M. (NASA Lewis Research Center Cleveland, OH, United States)