Variation of Falcon 9 noise at far-field recording sites

• DOI: 10.1121/10.0026804
• Publication Date: 2024-07-03T13:38:08Z
• Authors: Noah Pulsipher; Levi T. Moats; Kent L. Gee; Grant W. Hart; Megan R. McCullah...; Lucas K. Hall
• Keywords: Falcon; Variation (astronomy)

The rapid launch cadence of SpaceX’s Falcon 9 rocket provides the opportunity to study relative consistency far-field noise propagation. Acoustical measurements several launches have been made on and near Vandenberg Space Force Base at a location 8.4–14 km from pad. This paper compares collocated different missions begin understand data variability as function environmental conditions locations. 8.4 has measured over 10 times, whereas other locations span subsets launches. comparative analysis includes time-varying levels, spectra, waveform statistics, such pressure derivative skewness. Time periods particular interest are liftoff, peak noise, late into when vehicle is significantly downrange. [Work supported by USACE.]