Composite Tube making

Discussion in 'Composites' started by berridos, Mar 10, 2011.

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  1. Mar 10, 2011 #1

    berridos

    berridos

    berridos

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    Nike-Asp

    They fill nitrogen into the tube

    Cannot find the original thread
     
  2. Mar 10, 2011 #2

    Norman

    Norman

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    Here's a rather long one. It drifts a bit but gets back on topic and several methods are described including rocket body tubes. The google search button often works better than the built in search function
     
  3. Mar 10, 2011 #3

    autoreply

    autoreply

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    A lathe-cut foam core:
    YouTube - rough turning foam

    Seems like another interesting solution. Styrofoam can be eaten away after the lay-up has cured and this makes tapered tubes possible too.
     
  4. Mar 11, 2011 #4

    JamesAero

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  5. Mar 13, 2011 #5

    JMillar

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    I didn't look at all the links, so this might have been covered. In a book about composites I have, the author talks about how the spar for, I think, the Gossamer Albatross was made. They took an aluminum tube and layed up uni pre-preg on that, then wrapped it in heatshrink plastic. Then hot oil was pumped through the tube, both curing the prepreg and shrinking the wrap, which acted like vacuum bagging. After it was done, the aluminum tube was dissolved out with acid. Sounds like a pretty impressively innovative solution.
     
  6. Mar 14, 2011 #6

    berridos

    berridos

    berridos

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    Dissolved with acid? That sounds scary.
    What acid dissolves aluminium and preserves your lungs?
    With eating up a lower and upper channel of the alu tube the rest could be pulled out easily.

    I like the idea if it wouldnt be as dangerous as it sounds.
     
  7. Mar 14, 2011 #7

    Norman

    Norman

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    As I recall MaCready used chlorine from a swimming pool supply store
     
  8. Mar 15, 2011 #8

    wsimpso1

    wsimpso1

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    Read the other thread. All of this stuff was already talked about, and in detail.

    Dr. McCready used swimming pool acid. Yes it had to be nasty compared to the stuff I found to be inadequate...
     

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