On: Supersonic flight is possible without an audible sonic boom

[magicalhippo]

The main project page[1] contains links to various papers used to investigate this, including a 3D acoustic ray tracer[2] developed for this.

[1]: https://ascent.aero/project/acoustical-model-of-mach-cut-off...

[2]: https://etda.libraries.psu.edu/catalog/18490zfh5044