ShedDoor2020 t1_j6pakje wrote on January 31, 2023 at 10:55 PM

Reply to comment by chapium in Canada province decriminalizes hard drugs in new bid to combat opioid crisis by scot816

But WHICH Canadian province declares hard drugs decriminalized In Philadelphia? Just say so in the headline!

ShedDoor2020 t1_j6p362x wrote on January 31, 2023 at 10:07 PM

Reply to comment by gaunt79 in NASA and DARPA to partner on nuclear thermal propulsion demonstration by returnofjuju

Thank you for the explanation. So, do you have to replenish/refuel the hydrogen periodically? Or is it a closed system like a car radiator?

ShedDoor2020 t1_j6o7eys wrote on January 31, 2023 at 6:50 PM

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

ELI5 The way I understand it, nuclear ships and power plans basically use the heat from the nuclear reaction to power a steam engine and thus turn a turbine or drive-shaft. So how does nuclear power create thrust without a propeller or other mechanical aid? Are they controlling and focusing a series of miniature nuclear explosions to create thrust???