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gaunt79 t1_j6p5hdo wrote

Reply to comment by ShedDoor2020 in NASA and DARPA to partner on nuclear thermal propulsion demonstration by returnofjuju

It would need to be replentished, but it would theoretically be easier/safer to refill only hydrogen propellant than to refill both a fuel and an oxidizer. I don't think that refueling is in DRACO's mission parameters, though. Future NTP spacecraft may be reusable in that manner.

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