Variation of Falcon 9 noise in the mid-field

• DOI: 10.1121/10.0026805
• Publication Date: 2024-07-03T13:38:06Z
• Authors: Levi T. Moats; Noah Pulsipher; 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 noise radiation. Acoustical measurements several launches have been made on and near Vandenberg Space Force Base within 1 km pad. This paper compares collocated mid-field from different missions begin understand data variability as a function environmental conditions. One location 395 m pad has measured over 5 times. 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.]