See, the difference between *Raptor 1 and raptor 3 engines* used by *spaceX!* *RAPTOR 1 rocket engine 🚀* The full space version, seems like spaghetti 🍝 due to complex plumbing is the earliest engine prototypes used by spaceX. It could generate trust of about ~185 tons and pressure chambers ~250 bars. *RAPTOR 2 rocket engine 🚀* The raptor 2 was redesignet fo mass production due to ineffectiveness compared to raptor 1. This was much clearer design. The thrust generated: ~230 tons Pressure chamber: ~300 bars It contained better cooling and fewer welds. *RAPTOR 3 rocket engine 🚀* This is the most advanced and powerful iteration of raptors. Thrust generated: ~269 tons Pressure chamber: ~330 bars or higher The spaceX used the most advanced materials and 3d printerong technologies to make it possible. *The raptor engines are considered one of the most advanced rocket engines ever created even advanced then NASA's!*