Maybe these? http://www.wired.com/autopia/2010/07/aerospace-giants-design-supersonic-jets-with-a-silent-boom/ http://www.wired.com/autopia/2010/07/aerospace-gia

Maybe these? http://www.wired.com/autopia/2010/07/aerospace-giants-design-supersonic-jets-with-a-silent-boom/ http://www.wired.com/autopia/2010/07/aerospace-giants-design... This has a small image of a test vehicle: http://www.nasa.gov/missions/research/sonic_booms.html http://www.nasa.gov/missions/research/sonic_booms.html