Whoa! SpaceX test-fires Raptor engine into ‘water cooled steel plate’ May 20, 2023 Unipro2013main Future Space Exploration, Sci Tech Future Space Watch SpaceX douse a steel plate with water and then blast Raptor engine fire into it. The private spaceflight company’s Super Heavy and Starship rockets are powered by 39 total Raptor engines combined. Credit VideoFromSpace Please support our Sponsors here :