This arrangement leads to a few complicated welding and machining processes, but surprisingly these obstacles can be overcome by simply printing a rocket engine on a 3D printer. The current engine ...

Although there was briefly a company called Rotary Rocket ... or rotary, engine. If you ever wondered how these worked, why not print a model? That’s what [Engineering Explained] did.

Rocket company Skyrora has started testing ... Chief executive Volodymyr Levykin said: "The new models of 3D printed engines are bringing Skyrora closer towards efficient commercial orbital ...