Welcome to DefenceTalk.com Forum!

By registering with us, you'll be able to discuss, share and private message with other members of our community.

  1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Space Shuttle Replacement?

Discussion in 'Space Technology' started by Ananda, May 29, 2009.

Share This Page

  1. Belesari

    Belesari New Member

    Joined:
    Mar 7, 2010
    Messages:
    553
    Likes Received:
    0
    Location:
    USA,TN
    True but it also slams into the ground rather badly wich isnt good for a pactient.
     
  2. Ananda

    Ananda Well-Known Member

    Joined:
    Oct 10, 2008
    Messages:
    1,799
    Likes Received:
    85
    Kato thanks for the corrections. I agree with you that Soyuz would be better for emergencies situations. Afterall the X-37 and the full scale versions (X-40 ?) would be a Space UAV, and not design to support man habitations.

    Still a reusable space UAV was not really a new technology. Afterall the first space flight (and the only one as far as I know) of Buran was tottaly automated. Thus it's made Buran as the First space UAV.
    Just wandering what new capabilties that X-37 will have that would made it and the full scale productions versions as a capable space shuttle replacements. Perhaps you or any members in the forum have more info on this ?
     
  3. John Fedup

    John Fedup Well-Known Member

    Joined:
    Sep 9, 2013
    Messages:
    3,863
    Likes Received:
    252
    Location:
    Vancouver and Toronto
    As there seems to be no thread about SpaceX’s Dragon, I will use this thread as Dragon will be a future manned vehicle. Dragon just splashed down about 45 minutes ago. A manned flight should occur later this year.
     
  4. barney41

    barney41 Member

    Joined:
    Sep 20, 2014
    Messages:
    362
    Likes Received:
    11
    Location:
    Manila
    If I understood Elon Musk correctly, the new SuperHeavy/Starship combo will eventually make obsolete earlier hardware, including Falcon 9/CrewDragon and Falcon Heavy. Think of it as a shuttle on steroids. In one video he showed Starship docked with the ISS and the audience laughed because Starship is so huge.


    It seems counter-intuitive considering how large the former is ccmpared to.the latter two but SuperHeavy/Starship will be cheaper to operate because it's 100% reusable only cost being fuel. In fact, he envisions competing against airlines for point-to-point earth travel.

    Crew Dragon requires a trunk engine section which is discarded and has the added expense of recovery after an ocean landing by chute.
     
    Last edited: Mar 11, 2019
  5. barney41

    barney41 Member

    Joined:
    Sep 20, 2014
    Messages:
    362
    Likes Received:
    11
    Location:
    Manila
  6. John Fedup

    John Fedup Well-Known Member

    Joined:
    Sep 9, 2013
    Messages:
    3,863
    Likes Received:
    252
    Location:
    Vancouver and Toronto
    It is unclear to me if the capsule that exploded was the same one that went to the ISS or if it was some kind of test capsule. I guess it doesn't matter as the circumstances for the failure will have to fully investigated regardless of which capsule was involved. Haven't heard much about Boeing's CST-100 lately.
     
  7. StobieWan

    StobieWan Super Moderator Staff Member

    Joined:
    Nov 3, 2010
    Messages:
    3,119
    Likes Received:
    118

    It was a re-use of a capsule - the issue appears to have been with the thrusters intended to brake and arrest the capsule but I don't have any more information than that right now.
     
  8. barney41

    barney41 Member

    Joined:
    Sep 20, 2014
    Messages:
    362
    Likes Received:
    11
    Location:
    Manila
    AFAIK it was the same capsule. Some speculation going on that corrosion from landing in the ocean may have been a factor in the accident. It would have been a disaster if it had exploded while attached to the ISS.
     
  9. StobieWan

    StobieWan Super Moderator Staff Member

    Joined:
    Nov 3, 2010
    Messages:
    3,119
    Likes Received:
    118

    Correction on the above, I should have said the test failed around issues with the launch abort system which on Dragon, Starliner and Blue Shepherd are all reusable internal systems as opposed to the disposable launch abort towers used in many previous programs.

    Dragon uses a hypergolic system which is actually safer in conjunction with the ISS missions than a solid rocket system (which in dock with the ISS would be subject to severe thermal loading many times a day)

    So, we'll have to see what went wrong I guess.
     
  10. barney41

    barney41 Member

    Joined:
    Sep 20, 2014
    Messages:
    362
    Likes Received:
    11
    Location:
    Manila
    SpaceX is about to launch it's first batch of 60 Star Link satellites into LEO as part of it's plan to provide worldwide broadband Internet service. IIRC, it recently received permission to install a million ground stations as well. Eventually, they hope to have more than 12,000 satellites at an estimated cost of $10B but the profits could be huge and finance Musk's Mars colonization program. Some have suggested though that 5G tech could pose a threat to Star.Link
     
  11. ngatimozart

    ngatimozart Super Moderator Staff Member Verified Defense Pro

    Joined:
    Feb 5, 2010
    Messages:
    5,993
    Likes Received:
    852
    Location:
    In the rum store
    @barney41 Got a link / source for that. Going to get somewhat more crowded up there.
     
  12. barney41

    barney41 Member

    Joined:
    Sep 20, 2014
    Messages:
    362
    Likes Received:
    11
    Location:
    Manila
  13. ngatimozart

    ngatimozart Super Moderator Staff Member Verified Defense Pro

    Joined:
    Feb 5, 2010
    Messages:
    5,993
    Likes Received:
    852
    Location:
    In the rum store
  14. barney41

    barney41 Member

    Joined:
    Sep 20, 2014
    Messages:
    362
    Likes Received:
    11
    Location:
    Manila
    This has to be some sort of record, these aren't tiny cubesats. Each satellite is reported to weigh 227kg. Space X will need to launch some 400 satellites to achieve initial.internet capability. Musk is a proponent of vertical integration and the company builds the satellites and can launch them cheaper than anyone else so they'll be a formidable competitor.
     
  15. FormerDirtDart

    FormerDirtDart Member

    Joined:
    Feb 20, 2011
    Messages:
    263
    Likes Received:
    13
    Star Link's theoretical advantage over surface fiber optic cables is transmission time. And, that advantage is basically fractions, of fractions, of fractions of seconds. In a commercial market, in the initial decade(s) of deployment, given the likely cost prohibitive access to the constellation's bandwidth, the primary customer market would be the financial trading industry.
     
  16. barney41

    barney41 Member

    Joined:
    Sep 20, 2014
    Messages:
    362
    Likes Received:
    11
    Location:
    Manila
    I see Space X offering the service to telcos/ISP providers who will then be able to quickly expand their service to locations where it would be otherwise prohibitive to lay down fiber cable.