Abstract:The source characteristics of the Saturn F-1 engine in the infrasonic frequency range of 0.1–20 Hz and the seismic and magnetic fluctuations from 4 to 16 Hz have been ascertained. The acoustic signals have shown a characteristic ignition and cutoff pulse. The ignition signal shows a typical explosion signature (N-type wave), while the cutoff signal produces a bubble pulse-type effect, which might have resulted from an implosion structure. The engine run produces a steady state signal. However, its acoustic ene… Show more
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