Part 4/8:
The progression from Raptor 1 to Raptor 3 shows a clear trajectory of innovation and performance enhancement. Although visual details about Raptor 4 remain scarce, the expectations are high based on previous iterations. Raptor 4 is predicted to be more compact and efficient, potentially weighing around 1500 kilograms while delivering a staggering 330 tons of thrust. This thrust-to-weight ratio would place it ahead of the existing Merlin 1D engine, which stands at a benchmark of 180.