The SLS liftoff from Kennedy Space Center in November exceeded pre-launch noise models by more than 20 decibels, new research found.
Ahead of the Artemis 1 launch, the research team placed microphones at various distances from the launch pad, from 0.9 miles to 3.2 miles . Naturally, the sound level dropped the farther the microphone was from the pad, but the authors say that the noise of liftoff exceeded prior estimates at all five recording stations. For example, the 3.2-mile station recorded sound peaking at 129 decibels, approximately 20 decibels over the estimate made with pre-launch noise models.
“This suggests a need to revisit and probably revise those models,” author Grant Hart said in a release from the American Institute of Physics. Hart is an associate professor of physics at Brigham Young University.
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