NASA progress in aircraft noise prediction
John P. Raney, S. L. Padula, W. E. Zorumski, United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch, Langley Research Center
National Aeronautics and Space Administration, Scientific and Technical Information Branch, 1981 - Technology & Engineering - 38 pages
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1/3-octave band acoustic power AEROTRAIN Aircraft Noise Prediction ANOPP predictions atmospheric attenuation Available from DTIC body validation studies Boeing combination tone Comparison of ANOPP CTOL directivity angle directivity factor effective perceived noise EPNdB EPNL equation evaluated fan noise figure 19 flight dynamics flyover noise frequency band ground effects ICAO study jet noise prediction Langley Research Center Lateral Attenuation measured and predicted measured data NASA noise constraints noise contours noise data noise prediction methods Noise Prediction Program noise sources observer locations optimal control optimization overall mean-squared pressure overpredicted perceived noise level PNLT polar coordinates power setting power spectrum factor power spectrum level predicted noise levels prediction with measured propagation effects radiation angle shock cell noise shown in figure SNECMA sound pressure level source noise prediction SST engine Supersonic Cruise Research supersonic transport systems studies takeoff power takeoff procedures trajectory underprediction weighting function wide body validation