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Shuttle DIY

Discussion in 'Electronic Design' started by doug dwyer, Aug 5, 2005.

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  1. doug dwyer

    doug dwyer Guest

    I was looking at a rifid paper and was interested that to test the
    temperature between tiles rifids were inserted that relayed
    temperature.
    Trial heating was carried out with a plasma torch.
    Perhaps more interesting for the humble electronics engineer was the
    fact that the tiles were held on with modified RTV.
    Wonder if the acid is buffered?
     
  2. I think they can afford the platinum-catalyzed cure RTV.


    Best regards,
    Spehro Pefhany
     
  3. John  Larkin

    John Larkin Guest


    The irony is that the segmented SRB and the tiles were both selected
    assuming a shuttle flight a week or something. It was policy/religion
    to have nothing on the shuttle that was throw-away.

    They could have used expendable boosters and bolt-on, one-time
    ablative heat shields - bog reliable technology - and saved a lot of
    lives and money. The tiles are especially fragile and expensive, not
    to mention ugly.

    John
     
  4. Perhaps with the ablative coating-- whatever it is-- robotically
    applied to the bolt-on surface and automatically tested over the whole
    surface (if necessary) for high reliability. Making one a week or one
    a day from virgin materials would be a snap for their contractors-
    that's just the kind of quantities they typically deal in anyway. Keep
    the most expensive and less stressed parts, figure out how to cheaply
    and reliably build lots of the more stressed parts and throw them out
    after use.

    AFAIUI, the tiles are made in thousands of different shapes and
    thicknesses and have to be individually hand-applied.
    About $100,000,000 per spacecraft using a value of $4,000 per tile*
    24,000+ tiles. And a bunch of them get damaged every time it flies.

    It was an interesting idea. Maybe it should have stayed in whatever
    brainstorming session it came out of.


    Best regards,
    Spehro Pefhany
     
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