Winchell Chung

@nyrath

Star map and Atomic Rocket geek. The hard-science SF writer's tech support.

The Praeternatural Tower
Vrijeme pridruživanja: travanj 2009.

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  1. Prikvačeni tweet
    20. svi 2014.

    I've started a Patreon campaign, so people can help me improve my Atomic Rocket website

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  2. proslijedio/la je Tweet
    prije 22 sata

    A training torpedo stuck in the hull of the soviet atomic submarine K-178, 1989.

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  3. proslijedio/la je Tweet

    I'm posting this link because I like the contractor's name - Ford Aeronutronic. It was about giving Nova and NERVA something to do.

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  4. proslijedio/la je Tweet

    I’m calling the ship done, next is FX. Drive plasma and pew pew! Also I forgot to toothbrush the stars in the bg so adding them now will be fun...

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  5. proslijedio/la je Tweet
    prije 6 sati
    Odgovor korisnicima

    There's a terrible pun about Matterhorns in there somewhere.

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  6. proslijedio/la je Tweet
    Odgovor korisnicima i sljedećem broju korisnika:

    We normally mine U at 0.1-1%, but there is at least 1.4 ppm everywhere. The mantle is estimated to have some 0.008-0.020 ppm, which is in the high range of most asteroids, the core is thought to be quite U depleted compared with the mantle while the crust is heavily U enriched.

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  7. proslijedio/la je Tweet
    Odgovor korisnicima i sljedećem broju korisnika:

    There is a value that I personally think it's much more important than the total quantity of a given metal, it's is the concentration, which is the core of how viable it is to extract something. Lower concentrations require more work, more sofisticated processes and energy.

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  8. proslijedio/la je Tweet
    prije 8 sati
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  9. prije 8 sati
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  10. proslijedio/la je Tweet
    prije 10 sati

    Beware, aliens are involved! "Lens Flare: Magnified X-Ray Binaries as Passive Beacons in SETI": ->

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  11. proslijedio/la je Tweet
    prije 12 sati

    Space art from an unexpected direction -- a 1953 ad for advertising agency Charles Cooper touting one of their artists, Kenneth Fagg. He's best-remembered for some If magazine covers (attached is my favorite), but look under the letter "M" in the ad you'll see a more famous name.

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  12. proslijedio/la je Tweet
    Odgovor korisnicima i sljedećem broju korisnika:

    I have long wondered if silicon life requires carbon based life as a starter.

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  13. proslijedio/la je Tweet
    prije 11 sati
    Odgovor korisnicima

    Uranium isn’t collocated with other metals in the crust. Cadmium is, if you find enough zinc. And there’s apparently no consensus on U being in the core at all.

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  14. proslijedio/la je Tweet

    I gripe a lot about bad design on here, and sometimes give examples of Bad, but for once, I can show you literally the best design I have ever seen

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  15. proslijedio/la je Tweet
    prije 14 sati

    Remote defensive M24 cannon turrets on the B-36 Peacemaker bomber.

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  16. proslijedio/la je Tweet
    Odgovor korisniku/ci

    Hmmm... That's my uncredited artwork on the lander comparison.

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  17. proslijedio/la je Tweet

    YB-35, YB-49 & B-2 flying wings

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  18. proslijedio/la je Tweet
    prije 13 sati
    Odgovor korisnicima i sljedećem broju korisnika:

    Add in the fact that most advanced rocket designs use 233U or 242mAm, both being bred fuels (and Th more common than U), changes the equation somewhat

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  19. proslijedio/la je Tweet
    prije 14 sati
    Odgovor korisnicima

    We don’t need metal in asteroids nearly as much as we need nuclear fuel. And a huge proportion of that is mined on Earth in concentrations that occurred because of the mechanisms that I described.

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  20. proslijedio/la je Tweet
    prije 15 sati
    Odgovor korisnicima

    But, you have to realize that some asteroids are chunks of larger asteroids, so it’s possible to find chunks of metal which were once in the core of old asteroids.

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  21. proslijedio/la je Tweet
    prije 15 sati
    Odgovor korisnicima

    Not a bad supposition. Even your bog-standard NERVA was mostly automated in the details of its operation, after all. You'd sign for current rad flux, flux profile vs energy produced, etc. for your mission, and then have it auto-return. Repo on-mission would suck though...

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