SpaceX Raptor: Methane fueled full-flow staged combustion cycle engine
Seems like with as many F1s as were used on each Apollo mission, he should count more than 17 flights. Also, I know at least one F1 was shut down before reaching orbit.<p>But, wow, what a great presentation! None of the other explanations I read of the full-flow design were anywhere near as clear and comprehensible. My understanding of rocket design principles has taken a great leap.