SpaceX Starship V3 and V4 and Raptor V3 and V4
by Brian Wang from NextBigFuture.com on (#702CA)
SpaceX Raptor 3 rocket engine had it first hot-fire in August 2024 and entered scaled production by early 2025. It has 280 tonnes-force (tf) sea-level thrust, 350-second specific impulse (Isp), and a dry mass under 1,525 kg. It has nearly double the thrust-to-weight of Raptor 2 at a fraction of the complexity (no external heat ...