Abstract
The effect of atmosphere‐induced rounding on the loudness of sonic boom waveforms is investigated. Waveforms with varying degrees of roundness representative of measured flight test data are considered. Simple equations are developed by which the perceived loudness and C‐weighted sound exposure levels of these sonic booms can be calculated directly from their waveform parameters. This method shows excellent agreement with more complex loudness calculations (e.g., by Johnson and Robinson) as well as the full C‐weighted sound exposure level calculation. A new set of flight test data is used to correlate shock strength with rise time. The results are compared to a semi‐empirical model proposed by Dr. Kenneth Plotkin from earlier work.
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