Scramjet jet engine model

A model of a scramjet (or ramjet) engine. The model also includes a de Laval (convergent-divergent) nozzle which would be used on this type of engine. There are two print profiles:The big boy that measures 776mm (almost 80cm) from the cone tip to the nozzle endIts little brother at 50% scaleThe assembly process is simple and it shouldn't take you more than an hour.I didn't try to scale below 50% but it should work if you scale it down even more (or scale it up). The model consists of:The main body with a cutout to display its internalsCone assembly with fuel injectorsDiffusor and linerSome theoryWhat is a scramjet or ramjet engineThis is still a mostly experimental technology with a lot of potential. Both versions achieve extremely high speeds which can't be achieved with normal jet engines. Above Mach 3-4, this engine type becomes more efficient than other types of jet engines.They have little to zero moving parts which also means, that for them to work, they need to be al