Announcement

Collapse
No announcement yet.

ISS may get large Bigelow module

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • ISS may get large Bigelow module


    Bigelow modules (note: Genesis I and II were testbeds and have been up since 2006/2007 respectively. The other pic is the propulsion bus that provides orbital maneuvering, re-boost and a node for attaching up to 5 modules into a space station - normally launched attached to a Sundancer)

    If this happens it'll be the return of NASA's canceled TransHab tech to the ISS in greatly enhanced Bigelow form (Bigelow bought the TransHab patents after its funding dried up - the story of NASA's life).

    Essentially, a BA-330 (330 cu/meters) would up the habitable volume of the ISS from the current 358 m³ to 688 m³ in one shot.

    The final size of the ISS without a Bigelow module was to be 1,000 m³ and it cost over $100 billion and dozens of shuttle missions just for the US contribution. ISS has no engines of its own, requiring a space shuttle or Soyuz to re-boost it when its orbit decays. No significant orbital changes are possible.

    A fully configured Bigelow space station (4 BA-330's and a 180 m³ Sundancer) would be 1,500 m³, cost a small fraction of what ISS has cost and would take <10 missions to build, counting the 5 module launches. It can also change orbits from low to high and re-boost its orbit as it decays because the Sundancer module has that rather large propulsion bus.

    Bigelow modules could also be used as habitats on manned interplanetary spacecraft.

    Flight Global article....

    DATE:09/09/09

    SOURCE:Flightglobal.com

    NASA considers ISS Bigelow module

    By Rob Coppinger

    NASA is considering attaching a Bigelow Aerospace inflatable module to the International Space Station, in a return to a concept the agency had more than a decade ago.

    In 1997 the US space agency examined the possible attachment of its Transhab inflatable module to the ISS, but abandoned the technology project. Transhab would have been used for crew quarters.

    Bigelow took the NASA Transhab technology and developed it for its own orbital complex concept and launched two technology demonstrators, Genesis I and II, which were successfully launched using Russian rockets in 2006 and 2007.

    From 2012 Bigelow wants to lease to governments, companies and tourists the use of its private space stations for research and recreation.

    In 2007 Bigelow Aerospace founder Robert Bigelow announced an $11.9 million price tag for four weeks at his space station in 2007 dollars, excluding the cost of transport.

    However, internal NASA documents passed to Flightglobal show the US space agency is now interested in attaching a Bigelow module, but neither the company or NASA were available for comment.

    The interest in the Bigelow technology follows NASA's decision to permanently attach its Italian-designed and built Raffaello multipurpose logistics module to the ISS.

    Raffaello, expected to arrive in September 2010 on the final Space Shuttle mission, will be filled with spares to overcome problems with station logistics once the Shuttle fleet is retired.

    In the Johnson Space Center's 8 September edition of its 8th Floor newsletter it is stated that Raffaello will be attached at the space station's Node 1 nadir port, which faces the Earth's surface.

    The next major module for the ISS, Node 3, will be delivered in February 2010 and that is also to be attached to Node 1, also known as Unity.

    Node 1 has six ports. Five are already in use, for the Z1 truss, the US laboratory module called Destiny, an airlock and two pressurised mating adaptors.

    One of the adaptors links Unity to Russia's Zarya module while the other docks the Shuttle. Node 3, also known as Tranquility, will be docked to Node 1 and the Node 1 pressurised mating adaptor used for docking Shuttle will be attached to it instead.

    Arriving in September 2010 Raffaello will take up the sixth port, which will be the nadir.
    Last edited by Dr Mordrid; 9 September 2009, 22:47.
    Dr. Mordrid
    ----------------------------
    An elephant is a mouse built to government specifications.

    I carry a gun because I can't throw a rock 1,250 fps

  • #2
    Originally posted by Dr Mordrid View Post
    The final size of the ISS without a Bigelow module was to be 1,000 m³ and it cost over $100 billion and dozens of shuttle missions just for the US contribution. ISS has no engines of its own, requiring a space shuttle or Soyuz to re-boost it when its orbit decays. No significant orbital changes are possible.[/URL]
    isn´t that kind of unfair? when the ISS was planned, Bigelow was not even around, and the transhab-stuff was obviously deemed not suitable. the first human genome cost as billions to sequence, now we are down to some tenthousands....

    mfg
    wulfman
    "Perhaps they communicate by changing colour? Like those sea creatures .."
    "Lobsters?"
    "Really? I didn't know they did that."
    "Oh yes, red means help!"

    Comment


    • #3
      Originally posted by Wulfman View Post
      isn´t that kind of unfair? when the ISS was planned, Bigelow was not even around, and the transhab-stuff was obviously deemed not suitable. the first human genome cost as billions to sequence, now we are down to some tenthousands....

      mfg
      wulfman
      TransHab was around and was supposed to be part of the ISS from the get-go.

      The rub is that the TransHab technology was not found unsuitable; the ISS module based on it was cut after a string of test successes because Congress reduced NASA's funding level and there was no longer room in the budget for it and the rest of ISS. Lots of experiments and modules got cut because of that, some of them what were considered core technologies at the start. TransHab was one of these.

      What Bigelow did was to sign 3 Space Act agreements with NASA in 1999 giving him key patents and exclusive rights to develop and market the technology. He has added numerous new features and improvements, all patented, and evolved the system into something far beyond what NASA had.

      That the ISS evolved into a funding black hole is the fault of NASA and the other partners. They mostly used outdated MIR tech (aluminum tin cans) for the modules when they had something they knew was revolutionary; larger but still cheaper & lighter per cubic meter of habitable space and safer, but as usual didn't take the next logical step. Bigelow picked up the ball and ran like hell with it. Their bad.

      To show you the difference in habitable space: the BA-330 (just a bit bigger than TransHab) weighs almost the same as the ISS's Zarya module yet is almost twice the diameter and longer (45x22 feet for BA-330 vs. 41.2x13 feet for Zarya)

      On top of that it has better insulation, radiation shielding and far better micrometeoroid protection. Back in the TransHab days NASA used one of their high velocity guns to fire projectiles at TransHab and ISS wall simulators. TransHab won handily; the ISS wall simulator was shredded ugly style and the TransHab wall was not. Damage to its outermost layers, yes. Fully penetrated, not even close. That's the difference between dead astro/cosmo-nauts and just a news story for the space sites.
      Last edited by Dr Mordrid; 10 September 2009, 11:39.
      Dr. Mordrid
      ----------------------------
      An elephant is a mouse built to government specifications.

      I carry a gun because I can't throw a rock 1,250 fps

      Comment


      • #4
        Originally posted by Dr Mordrid View Post
        They used outdated MIR tech when they had something they knew was revolutionary
        could that be rephrased as "we have something proven, and we have something unproven"? I won´t argue for either side, but I can see the merits of not going with the spectacular new thing, if peoples lives and a 20-year plan depend on it.

        mfg
        wulfman
        "Perhaps they communicate by changing colour? Like those sea creatures .."
        "Lobsters?"
        "Really? I didn't know they did that."
        "Oh yes, red means help!"

        Comment


        • #5
          Fair enough, but where do we go from there with 20/20 hindsight?

          I contend that the ISS is a waste of resources to maintain, especially given its very high operational costs and the shuttle program ending after just a few more flights. ISS is going to be hard or impossible to maintain long term without it, and if anything impacts it the modules and many key structures aren't replaceable (some even with the shuttle). If something makes it through a Bigelow hab they can discard it and launch a replacement that can dock by remote control for the cost of a small-medium size communications or imaging satellite launch.

          NASA should de-orbit ISS either as scheduled in 2016 or at the latest 2020 then move on, preferably out of LEO and into L2 or other gravity wells where they can build a station/fuel depot using modern tech as a jump point to the rest of the inner solar system. Fuel needs from there are minuscule, which is why the Augustine Commission is recommending depots both in LEO and at gravity wells like L2.

          Leave LEO labs to Bigelow, SpaceX and Excalibur Almaz; a private version of the Russian Almaz military spacecraft/hab announced last month and to fly in 2013. They bought stored Almaz gear from the Russians and are working with EADS Astrium on restarting the program, hopefully without the 23mm rapid-fire cannon on the Russian version
          Last edited by Dr Mordrid; 10 September 2009, 11:23.
          Dr. Mordrid
          ----------------------------
          An elephant is a mouse built to government specifications.

          I carry a gun because I can't throw a rock 1,250 fps

          Comment


          • #6
            Back in the late 60's i suppose the space flight and such weren't really proven either.

            This looks good, and we should all be saying go,go,go....

            Something needs to be done to get us back into space in a big way.
            Space Mining. Saturn has quite a few rocks to collect, and there is also all the rubbish orbiting our own planet some company could take care of.
            PC-1 Fractal Design Arc Mini R2, 3800X, Asus B450M-PRO mATX, 2x8GB B-die@3800C16, AMD Vega64, Seasonic 850W Gold, Black Ice Nemesis/Laing DDC/EKWB 240 Loop (VRM>CPU>GPU), Noctua Fans.
            Nas : i3/itx/2x4GB/8x4TB BTRFS/Raid6 (7 + Hotspare) Xpenology
            +++ : FSP Nano 800VA (Pi's+switch) + 1600VA (PC-1+Nas)

            Comment

            Working...
            X