Spacex Falcon 9 launch

Discussion in 'The Thunderdome' started by IP, Dec 21, 2015.

  1. gcbvol

    gcbvol Fabulous Moderator

    Haha. Certainly doesn't sound good.

    It's due to the distance the rocket must travel to release payload. The previous mission was to low earth orbit (about 2K kilometers), while this morning's satellite deployment was to geosynchronous transfer orbit (around 36K kilometers). So it is coming back faster as it was traveling much faster to reach its destination, and has less remaining fuel for necessary deceleration. The recovery was impressive.
     
    Last edited: May 6, 2016
  2. IP

    IP Super Moderator

    You guys are freakin' hilarious.



    But I assume coming faster means saving fuel on retrieval? Is that correct?
     
  3. lumberjack4

    lumberjack4 Chieftain

    The speed is simply a result of the rocket going into a higher orbit and having to fall a much greater distance back to Earth. Rockets from Low Earth Orbit launches will always come back slower than ones from a Geosynchronous Orbit launch.
     
  4. gcbvol

    gcbvol Fabulous Moderator

    I'm not sure. As I understand it the rocket burns more fuel in getting to the higher altitude. It also has to travel much faster to get there, so lots of fuel. That leaves less fuel than rockets returning from LEO, yet more fuel is needed for deceleration (I read GTO returns require 3x the deceleration of LEOs). It sounds like less fuel all around with GTO missions.
     
  5. lumberjack4

    lumberjack4 Chieftain

    It really is a case of having to to a whole lot more (deceleration) with a whole let less (fuel). Degree of difficulty is much, much higher. It's really impressive what they've been able to do in just a few years.
     
  6. Beechervol

    Beechervol Super Moderator

    You lost me after "release payload, destination, deceleration, and recovery"
     
  7. IP

    IP Super Moderator

    So it isn't about fuel saving, it's about degree of difficulty. Got it.
     
  8. kptvol

    kptvol Super Moderator

    I never have problems recovering after I've released my payload. Just ask all of your 18yo+ female relatives.
     
  9. bigpapavol

    bigpapavol Chieftain

    Takes longer for the 17 and under types?
     
  10. fl0at_

    fl0at_ Humorless, asinine, joyless pr*ck

    They had a bit of a problem getting it up this morning.
     
  11. hohenfelsvol

    hohenfelsvol Beer run

    Supposedly tests going on that went wrong. We'll see.
     
  12. IP

    IP Super Moderator

    "Flaw in launch pad", whatever that means
     
  13. gcbvol

    gcbvol Fabulous Moderator

    I'm guessing "we're not exactly sure yet".
     
  14. NorrisAlan

    NorrisAlan Founder of the Mike Honcho Fan Club

    I just don't know how a private company absorbs these kinds of blows.
     
  15. IP

    IP Super Moderator

    They're govt contracted
     
  16. hohenfelsvol

    hohenfelsvol Beer run

    Cost plus type contract I'm sure
     
  17. lumberjack4

    lumberjack4 Chieftain

  18. fl0at_

    fl0at_ Humorless, asinine, joyless pr*ck

  19. hohenfelsvol

    hohenfelsvol Beer run

    Just watched video where they showed the rocket blowing up. Escalated quickly.
     
  20. hohenfelsvol

    hohenfelsvol Beer run

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