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Why are astronauts placed horizontally when taking off?

  1. Oct 21, 2015 #1
    It because of the tremendous force they COULD face if taken off vertically? Is this is due to inertia (resistance to change motion)?
     
  2. jcsd
  3. Oct 21, 2015 #2

    davenn

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    Hi Rohan
    welcome to PF :smile:


    The g-forces are the same on the person in either way
    But when they are lying as they do, the forces are more evenly spread across the whole body


    Dave
     
  4. Oct 21, 2015 #3

    berkeman

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  5. Oct 21, 2015 #4
    Oh I see, thanks!
     
  6. Oct 21, 2015 #5

    davenn

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    thanks

    Yes, I should have gone on to comment about blood draining from upper body and pooling in legs and feet


    D
     
  7. Oct 21, 2015 #6

    e.bar.goum

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    The g-force you can stand depends on the direction of that force, and where the force goes through your back to front (or vice-versa) gives you the best ability to withstand it. Mary Roach's book Packing for Mars has a rather good section on this (the book is hilarious too).
     
  8. Oct 21, 2015 #7
    I guess it's also easier on their spine?
     
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