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That was 6 years ago, hard to say what remained of that ambitious goal. Also, these guys aren’t with SpaceX anymore.

I don't think they stopped development of that tech just because some people left.

They clearly invested massively in engine development from then on. I don't think they simply stopped.

And Raptor has turned into the best engine ever since then. Likely the used lots of simulation in development.

Raptor has since exceeded its target performance, maybe they ran out of frontiers to explore?

I don’t understand your comment. What does Raptor have to do with CFD method developments? What is the frontier? What does it mean to run out of frontiers? Shouldn’t there be more resources rather than fewer?

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