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> The first flight test of a full-flow staged-combustion engine occurred on 25 July 2019 when SpaceX flew their Raptor methalox FFSC engine at their South Texas
by fallingknife 5y ago
> The first flight test of a full-flow staged-combustion engine occurred on 25 July 2019 when SpaceX flew their Raptor methalox FFSC engine at their South Texas Launch Site.[8]
(Yes, there are others listed, but SpaceX was first to actually fly something.)
- dnautics 5y agothank you, the part about invention I care about is not ideation but actual reduction to practice.