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Skunk Works Reveals Compact Fusion Reactor Details

aviationweek.com

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Re: Skunk Works Reveals Compact Fusion Reactor Details

#21
post #9

> U.S. submarines and aircraft carriers run on nuclear power, but they have large fusion reactors on board that have to be replaced on a regular cycle. sigh To the extent this is true I suspect those "large fusion reactors" are tuned not so much for generating electricity and a great deal for annihilating whatever the carrying missile is pointed at. But never mind fuzzy thinking at Reuters right now. This is amazing…

[deleted]

Re: Skunk Works Reveals Compact Fusion Reactor Details

#23
post #7

> Initial work demonstrated the feasibility of building a 100-megawatt reactor measuring seven feet by 10 feet, which could fit on the back of a large truck, and is about 10 times smaller than current reactors, McGuire said. So that would power 50k to 100k typical houses in the US... not bad!

Compact is good, because until you can fuse helium-3, the reactor is producing neutrons, which will transmute the reactor and its shielding into other, often radioactive elements. So the entire thing will have to be regularly replaced and disposed of (which we can do safely, but too many people believe otherwise).

Re: Skunk Works Reveals Compact Fusion Reactor Details

#25
post #8

Earlier quoted context omitted.

The article certainly does, even if Lockheed does not. "U.S. submarines and aircraft carriers run on nuclear power, but they have large fusion reactors on board that have to be replaced on a regular cycle." US naval vessels have fission reactors, not fusion. I'm also pretty sure that although they would refuel a reactor, that rather than replace the reactor they'll likely replace the ship.

As etiam points out[0], some of them do carry fusion reactors, but they are not designed to generate electricity. [0] - https://news.ycombinator.com/item?id=8458426

Kind of a stretch to call a nuclear warhead a "reactor"...

Re: Skunk Works Reveals Compact Fusion Reactor Details

#27
post #12

The article is completely wrong about US Navy ships having fusion reactors. They have fission reactors, not fusion. I wonder if they are even reporting the breakthrough right since they clearly don't know the difference. For all we know the breakthrough may be smaller fission reactors too, which isn't a big deal at all.

They issued a correction.

> U.S. submarines and aircraft carriers run on nuclear power, but they have large fission reactors on board that have to be replaced on a regular cycle.

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