00:00That's when SpaceX broke the record with Raptor 1 firing at 270 bar and lifting Starhopper into
00:08the air for a short hop before landing again. And just so we have the full context. Since the
00:13Raptor uses staged combustion the preburner has to operate at a much higher pressure than the
00:17main combustion chamber. Otherwise the exhaust would flow in the wrong direction. We're talking
00:21about around 600 bar here. So unimaginable pressures. This high resolution photo by Jack
00:28Bayer gives us a look into the soul of Raptor 2 with serial number 44. Here on the label the
00:36oxygen
00:36preburner is marked. You can see that this line is rated for 823 bar and that was in January 2021.
00:47SpaceX has had the alloy for these lines at least since December 2018.
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