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The hurdles that face a spacecraft during its launching

  1. Mar 3, 2013 #1
    Hello,
    My question is quite simple.
    What kind of abuses does a spacecraft sustain from the moment it's launched until it's placed on orbit?I've always heard of what a spacecraft must face in the spatial environment but i've never heard of what it must face before it gets to it.
    Thank you.
     
  2. jcsd
  3. Mar 3, 2013 #2

    Chronos

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    There are huge inertial forces affecting a craft during launch - which shakes the crap out of it. A large craft is affected by differential forces across the length of the vehicle. The 'passenger' capsule is usually mechanically isolated from the launch vehicle for this reason.
     
  4. Mar 3, 2013 #3
    One of the astronauts said it was like being on the end of a whip antenna. The craft is built lightly and is flexible.
     
  5. Mar 3, 2013 #4

    Filip Larsen

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    Different launch vehicles have acoustic noise and vibration profiles that the payload (say, a satellite or crew capsule) has to endure during launch. As an example, you can look at the Falcon 9 Payload User's Guide [1] or the Atlas V User's Guide [2]. If you want to dig up some more profiles yourself, a search for "acoustic noise and vibration of launch vehicles" [3] may give you some ideas of what is involved.

    [1] http://www.spacex.com/Falcon9UsersGuide_2009.pdf [Broken]
    [2] http://www.ulalaunch.com/site/docs/product_cards/guides/AtlasVUsersGuide2010.pdf [Broken]
    [3] http://www.google.dk/search?q=acoustic+noise+vibration+launch+vehicle
     
    Last edited by a moderator: May 6, 2017
  6. Mar 3, 2013 #5
    Ok thank you for your answers, it helped me a lot.
     
  7. Mar 3, 2013 #6

    Drakkith

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    Something interesting to note is that the center engine on the Saturn V rocket was subject to such violent oscillations that it actually had to turn itself off on the Apollo 13 launch to avoid tearing apart the launch vehicle.

    http://en.wikipedia.org/wiki/Apollo_13#Launch_and_translunar_injection
     
  8. Mar 3, 2013 #7

    russ_watters

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    Huh, knew it had lost an engine, never heard why before, thanks.
     
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