Effect of facility variation on the acoustic characteristics of three single stream nozzlesThe characteristics of the jet noise produced by three single stream nozzles have been investigated statically at the NASA-Lewis Research Center outdoor jet acoustic facility. The nozzles consisted of a 7.6 cm diameter convergent conical, a 10.2 cm diameter convergent conical and an 8-lobe daisy nozzle with 7.6 cm equivalent diameter flow area. The acoustic experiments at NASA covered pressure ratios from 1.4 to 2.5 at total temperatures of 811 K and ambient. The data obtained with four different microphone arrays are compared.
Document ID
19810038130
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Gutierrez, O. A. (NASA Lewis Research Center Cleveland, Ohio, United States)