Elon's SpaceX Starship:
"Booster 19's V3 booster design has a lot of differences with V2. Same is true for Raptor 3 vs Raptor 2. So SpaceX didn't install all 33 Raptor 3's during the 1st round of Pad 2 tests."
Outward difference between Raptor 2 and Raptor 3. Some of Raptor 3's regenerative cooling (for pre-burners, combustion chamber, and nozzle), is routed to the outside of the engine as well. This eliminates a lot of heat shielding that was needed around Raptor 2. It's also designed for quicker mass production. Raptor 3 also produces more thrust than Raptor 2 (280 tons/2,745 kilonewtons vs 230 tons/2,260 kilonewtons).
Screenshot from #WAI video.
#Space #SpaceX #Starship #ElonMusk