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this is a 3D printed nozzle and this is that same nozzle creating Mach 3 Flow in my garage what makes this nozzle special is the Bell shape of the diverging section and this may look familiar because this shape is used on essentially every production rocket engine in this video Iamp;#39;m going to show you how I designed and tested this nozzle measured the thrust and compared the cfd and of course made some really cool looking shock diamonds now nozzles come in a lot of different shapes but which one of these is best to answer this we need to start simple this is a converging nozzle to make it easier to see I printed this cross-section as the flow enters the nozzle at high pressure itamp;#39;s forced to flow through a smaller exit area this is called the throat of the nozzle and as you can imagine forcing all that flow through a smaller area means the flow has to speed up but how fast will it get we could do some quick math to calculate this or we could just test it out to ru
