A technique for predicting far-field acoustic environments due to a moving rocket sound source
G. A. Wilhold, S. H. Guest, J. H. Jones, George C. Marshall Space Flight Center. Propulsion and Vehicle Engineering Division
National Aeronautics and Space Administration, 1963 - Music - 39 pages
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DEVELOPMENT OF THE DISTRIBUTION FACTOR
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A(fQ acoustic data ACOUSTIC ENVIRONMENTS DUE acoustic environments produced acoustical impedance and/or time history D-1832 National Aeronautics decibels distribution factor Doppler effect engine parameters ent day types environments during launch equation 19 excess attenuation far-field acoustic environments FEET OBSERVED form for pres ft/sec G. A. Wilhold given in spectral history form Horizontal Distance inclusion of trajectory J. H. Jones large rocket powered large space vehicles maximum far-field acoustic moving rocket sound moving sound source nondimensional obtaining the far-field p c DT parameters and vehicle power spectrum PREDICTING FAR-FIELD ACOUSTIC propagated frequency propagating medium provide a space-time resulting far-field acoustic rocket engines rocket powered vehicle ROCKET SOUND SOURCE S. H. Guest Saturn slant range sound pressure level sound source technique source frequency space vehicles necessitates spectral and/or Strouhal Number TECHNICAL NOTE D-1832 TECHNIQUE FOR PREDICTING TN D-1832 National trajectory parameters vehicle altitude vehicle trajectory information vehicle velocity