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Thread: Astronaut???

  1. #1

    Default Astronaut???

    Do Astronauts use rebreathers? If so are they similar or even the same technology that is used by divers?

    Are they made by NASA or outsourced?

    Just curious!

  2. #2

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    Quote Originally Posted by Blackchains View Post
    Do Astronauts use rebreathers? If so are they similar or even the same technology that is used by divers?

    Are they made by NASA or outsourced?

    Just curious!
    Didn't ya ever see the movie Apollo 13? The CO2 scrubber looked JUST like a rebreather scrubber!
    I decided that I needed a redundant glowstick --Mark Schroder

  3. #3
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    Default

    Quote Originally Posted by Blackchains View Post
    ....Are they made by NASA or outsourced?....
    Most everything NASA does is outsourced.
    Forrest Wilson (with 2 Rs)
    Any opinions are personal.
    Sump Divers

  4. #4
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    Joe


    Quote Originally Posted by Richard Pyle
    "After my first 10 hours on a rebreather, I was a real expert. Another 40 hours of dive time later, I considered myself a novice. When I had completed about 100 hours of rebreather diving, I realized I was only just a beginner."

  5. #5
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    Default

    Quote Originally Posted by Blackchains View Post
    ...are they similar or even the same technology that is used by divers?...
    I just looked at the link Tegg posted. The PLSS uses Lithium Hydroxide. It works great dry, but wet.... Did you ever see the movie The Cave?
    Forrest Wilson (with 2 Rs)
    Any opinions are personal.
    Sump Divers

  6. #6

    Default

    A 30 day mission would require a big bail out bottle to sling to your side!

  7. #7

    Default

    Quote Originally Posted by FW View Post
    I just looked at the link Tegg posted. The PLSS uses Lithium Hydroxide. It works great dry, but wet.... Did you ever see the movie The Cave?
    KA-BOOM? Makes your scooter explode
    Michael Angelo Artwork for a Wet World
    www.michael-angelo-art.com
    Brendan's Law - "Know what you're breathing. Analyze your gas for O2 and Co. Analyze your gas each time, everytime, anywhere."

  8. #8

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    Interesting. At 3.7psi, and 100% O2 - they are breathing just over .21 PPO2, no N2 or anything else. Very "cool" deco scenario.
    Bob Cree

  9. #9

    Default

    Yep, but decompression is a huge deal for these guys. They use N2 inside the space stations to control fire situations - but that means that they have to decompress for hours before a space walk. If you read the deco literature, any decent science is done with two groups - astronauts and military divers. We just happen to get the benefits... even though we do the vast majority of the actual exposures these days.
    Andrew Ainslie


    EOL junkie, narcosis freak, deep freak, phlegm freak, lazybastard, testosterone infused freak, mole hole junkie sarcastic a-hole tourist. (citation: http://www.cavediver.net/forum/showt...l=1#post142178)

  10. #10

    Default

    Do you have any idea what kind of total pressure (and PO2) they typically run inside the space stations? Makes sense they would use N2 for fire suppression given the Apollo experience with pure oxygen environ's (I grew up with NASA in the south of Houston). Certainly pushes the low PO2/low total pressure envelope that we as divers, don't see...but a great "far" data point none the less. Wonder how this fits with current deco theorist thinking.
    Bob Cree


 

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