Description:
<jats:p>Civil supersonic flight over land will only be allowed when sound levels are low enough to be acceptable to the public, and thus the sound field inside buildings needs to be well understood. To understand the field inside buildings, the sound field outside the buildings as well as the diffraction and loading on the building must be determined. A model to propagate sonic booms in urban landscapes was developed using a combined ray tracing and radiosity method. This model includes both diffuse and specular reflections for a single building configuration. The impact of diffuse reflections on the propagating and diffracting sound field will be examined, and multiple building configurations are also considered. The model results will be compared with data from NASA’s SonicBOBS (sonic booms on big structures) experiment conducted in September of 2009. [Work supported by NASA.]</jats:p>