@a16z
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@a16z In 2019, SpaceX fired the engine that would become the first full-flow staged combustion engine to ever fly. It came covered in pipes and sensors because SpaceX needed to see what the engine was actually doing. On Raptor 1, the sensors were the point, not the flight hardware. Raptor 2 removed what the data showed was unnecessary. Raptor 3 removed the engine heat shield entirely, folding the cooling circuits into the individual parts and replacing bolted flanges with welds. Elon Musk’s rule at SpaceX is to delete any part or process you can and expect to add roughly 10% of them back.
