XCOR Hot-Fire Tests Piston Pump With LOX, Hydrogen

XCOR Aerospace has used its unique piston-pump technology to move two cryogenic propellants in a hot-fire test of the XR-5H25 engine it is developing as a pathfinder for a potential advanced upper-stage engine for United Launch Alliance (ULA) in the same class as the RL-10 engine in use today on the...

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