The Sonic Boom Cannon Control System:

The Sonic Boom Cannon was from the beginning going to be large (28 feet in length). Anyone who has ever worked with a canon that mixes oxygen with fuel will tell you that absolute precision is required to maintain safety. Free thinking designer Ed Nauman (link) designed a propane/oxygen cannon that attained blast intensities he claims were in the 195db range. Ed's design used electronics and proprietary circuit designs to make very efficient combustion and as a result a big bang. But, The Sonic Boom Cannon had a very different mission:I wasn't after a big bang, I was after a realisitc sonic boom. Something that could be listened to with naked human ears and sound exactly like the real thing.