Effect of aerodynamic detuning on supersonic rotor discrete frequency noise generationA mathematical model was developed to predict the effect of alternate blade circumferential aerodynamic detuning on the discrete frequency noise generation of a supersonic rotor. Aerodynamic detuning was shown to have a small beneficial effect on the noise generation for reduced frequencies less than 3. For reduced frequencies greater than 3, however, the aerodynamic detuning either increased or decreased the noise generated, depending on the value of the reduced frequency.
Document ID
19890027712
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Hoyniak, D. (NASA Lewis Research Center Cleveland, OH, United States)
Fleeter, Sanford (NASA Lewis Research Center Cleveland, OH, United States)