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[i]SpaceX propulsion just achieved first firing of the Raptor interplanetary transport engine.[/i]
[i]Mach diamonds.[/i]
[i]Production Raptor goal is specific impulse of 382 seconds and thrust of 3 MN (~310 metric tons) at 300 bar. Chamber pressure is almost three times Merlin, so engine is about the same size for a given area ratio.[/i]
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