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Thread: Pros and Con of making a copper spaceship

  1. #1 Pros and Con of making a copper spaceship 
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    I know they use aluminum because it's lightweight.

    What if they used copper?


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  3. #2  
    Genius Duck Dywyddyr's Avatar
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    This is neither Astronomy NOR Cosmology.


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  4. #3  
    Forum Bachelors Degree GoldenRatio's Avatar
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    pros: it shure would be purdy. Lets go all out and use gold.
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  5. #4  
    Moderator Moderator Markus Hanke's Avatar
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    MODERATOR NOTE : Probably best suited to the Engineering section. Moved.
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  6. #5  
    Genius Duck Dywyddyr's Avatar
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    This is, like the majority of lorbo's threads, utter bullshit.
    1) Copper is too ductile to be used as a structural material.
    2) If weight saving - as indicated by the comment on aluminium 1 - is the aim then it should be noted that:
    Steel - 7.8 g/ cm3
    Aluminium - 2.7 g/ cm3
    Copper - 8.9 gm/ cm3
    i.e. a weight INCREASE.

    It should also be noted that, in a large number of cases where aluminium is used structurally, it's nothing at all to do with "lighter material" because to achieve the same strength 3 times as much of it is needed. Which brings it up to the same weight as steel. The saving is that, given three times the thickness then each component becomes sufficiently stiff enough to not require internal bracing: leaving out THOSE means that - overall - the entire thing is lighter.

    1 I refuse to call it "aluminum".
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    Forum Senior pineapples's Avatar
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    Copper helps kill bacteria and prevent the spread of infections (like superbugs in hospitals), so you won’t have to scrub down your ship’s interior as often.
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  8. #7  
    Brassica oleracea Strange's Avatar
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    Quote Originally Posted by Dywyddyr View Post
    1 I refuse to call it "aluminum".
    It was good enough for Sir Humphrey Davy (after he realised that alumium was silly). You wouldn't insist on platinium, would you.
    ei incumbit probatio qui dicit, non qui negat
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    Genius Duck Dywyddyr's Avatar
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    Quote Originally Posted by Strange View Post
    It was good enough for Sir Humphrey Davy (after he realised that alumium was silly).
    He was an indecisive git.

    You wouldn't insist on platinium, would you.
    I wouldn't insist on Hafnum, Gallum, Potassum or Sodum either!
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  10. #9  
    Moderator Moderator Janus's Avatar
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    Another con is that Copper is over 4 times more expensive per oz.
    "Men are apt to mistake the strength of their feelings for the strength of their argument.
    The heated mind resents the chill touch & relentless scrutiny of logic"-W.E. Gladstone


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  11. #10  
    Genius Duck Dywyddyr's Avatar
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    Quote Originally Posted by Janus View Post
    Another con is that Copper is over 4 times more expensive per oz.
    Well I'll be sneaky, and buy it by the tonne instead.
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  12. #11  
    Forum Cosmic Wizard
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    Quote Originally Posted by lorbo View Post
    I know they use aluminum because it's lightweight.

    What if they used copper?
    Pros - the copper would heal all your ills.
    Cons - if you parked it downtown, someone would steal it and sell it to a junkyard for the copper.
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