Meanwhile, the Super Heavy rocket has many more engines ... we will finally have a Raptor 3/4 vacuum version (giant nozzle) that has an Isp [specific impulse] of 380." Just because SpaceX has ...

Compared to more "conventional" rocket engines ... the Raptor series has gotten to its third iteration. The Raptor 3 — the latest version — was a complete redesign of the engine to make ...