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1/3-octave-band analysis acceleration 0.5 g acoustic data acoustic noise level ALGOL ambient pressure arm microphones background noise level Black and Latimer calibrations chuffing computed OA SPL concrete pad curve dynamic pressure ESRO I-B Figure 10b first-stage flight microphone FLIGHT TIME sec frequency response Goddard Space Flight Greenbelt H202 ATTITUDE CONTROL heat shield high background noise i i i i I i i i i ignition in-flight tape recorder Langley Research Center LAUNCH OF SCOUT launch pad Launcher microphone data launcher octave-band acoustic launcher-tower loss of signal low-pass magnetic tape MAXIMUM LEVELS motor pressure NASA newtons/meter2 noise environment noise-reduction properties oscillograph record overall sound-pressure level payload Performing Organization readily transmits rocket motor Scout Project Office SCOUT S-169 GRS-A Scout vehicle section telemetry shown in Figure shroud Space Flight Center spacecraft separation spin rate steady and low-frequency telemetry channel assignments tip-off transducers were included Transition Section umbilical microphone Western Test Range