ARCOS is designed to be reused up to 10 times and to power both a rocket’s booster and upper stage. And like the Demo-P1, it will be 3D-printed. A 3D render of the finished ARCOS engine.

When the Terran 1 launches, it will bring to life Relativity’s biggest project to date, a massive 3D-printed rocket larger than any other 3D-printed object ever created to go to orbit.