NASA & World Space Exploration...News, Views, Photos & videos

Discussion in 'Members' Club Room' started by bd popeye, Jul 2, 2012.

  1. jackliu
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    jackliu Banned Idiot

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    Re: World News Thread & Breaking News!!

    You are talking about Soyuz and SZ craft, which can only hold 3 people because that is the way it is designed, however the Dragon capsule of SpaceX holds up to 7 people and it is shaped very much like traditional Soyuz design. And there is nothing prevent it sending up a dozen people using conventional ball shape design.

    What you describing is nothing more than the feature of Space Shuttle, but everything that Shuttle can do, a more cheaper and safer design can do as well, there is really nothing about shuttle can do and a conventional cheaper design can't. It is very possible to develop high thrust rocket that have 2 or more payloads, with the manned capsule at the top, and other payload at bottom, they would separate when in space and it would take a few orbit to align them together if spacewalk is needed.

    Or they can just send up the crew rocket and payload in two different system, and it will still be WAY cheaper and safer than Space Shuttle.
     
  2. Equation
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    Equation Lieutenant General

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    Re: World News Thread & Breaking News!!

    In space flight there is no such thing as cheaper and/or safer forever, just risks and rewards. So before the Dragon Capsule gets done, was there any other rocket that can compete with the space shuttle crew capacity? How many rockets throughout man's history of space flight did you see has cargo bay for a robotic arm and for loading and launching satellites all without a need for module docking?
     
  3. jackliu
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    jackliu Banned Idiot

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    Re: World News Thread & Breaking News!!

    The better question is, is there anything that space shuttle can do that anything else can't? Answer is NO.

    A even better question is, instead of developing the space shuttle, can NASA use the fund to develop a system much cheaper than Space shuttle and get the job done? Answer is YES.

    Your argument is that Shuttle have such and such features, and others does not, therefore it makes the shuttle superior, my argument is that shuttle over promised on it is feature, cost and safety factor, which cannibalize many other opportunity that would have been done if Shuttle was not developed.

    Even the head of NASA had something to say about the Space shuttle.

    NASA administrator Michael D. Griffin argued in a 2007 paper that the Saturn program, if continued, could have provided six manned launches per year — two of them to the moon — at the same cost as the Shuttle program, with an additional ability to loft infrastructure for further missions:

    If we had done all this, we would be on Mars today, not writing about it as a subject for “the next 50 years.” We would have decades of experience operating long-duration space systems in Earth orbit, and similar decades of experience in exploring and learning to utilize the Moon.

    Go read all of this page then we'll talk, or I feel like we are going in circles.

    Criticism of the Space Shuttle program - Wikipedia, the free encyclopedia
     
  4. Equation
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    Equation Lieutenant General

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    Re: World News Thread & Breaking News!!

    The shuttle is superior in orbiting missions, meanwhile the Saturn V rocket types are for lunar missions. If I were NASA I would want to keep both. One will always need a space plane type for orbital docking to transport of people and cargo, meanwhile the rockets could be use to colonized the moon and transportation of goods and construction equipment. Basically I wanted to point out is that the rocket can't be a substitute for the shuttle, and vice versa.
     
  5. bladerunner
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    bladerunner Banned Idiot

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    Re: World News Thread & Breaking News!!

    Yeah, its easy to be criticle of the shuttle, when one resorts to applying all the hindsight in the world.
     
  6. Franklin
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    Franklin Captain

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    Re: World News Thread & Breaking News!!

    This story is cute.

    LiveLeak.com - Israel, The Third Nation on the Moon?
     
  7. bladerunner
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    bladerunner Banned Idiot

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    Daydreaming beyond the solar system with warp field mechanics

    www.jsc.nasa.gov/roundup/online/2012/0712.pdf

    By Catherine Ragin Williams


    .. the Red Planet or an asteroid are enticing destinations, but what if one day we wanted to go really, really far out? With the technology we have today, it’s not in the realm of possibility. But it could be … and the Eagleworks Laboratories at Johnson Space Center are doing the mathematics and physics required to find the answers that defy traditional Newtonian laws.


    It’s the same space, and the same standard of time, but if we can theoretically manipulate it for our purposes, interstellar flight could be an option on a future technology roadmap.
    “The first question you might start with is, ‘How hard is interstellar flight?’” said Dr. Harold “Sonny” White, Advanced Propulsion Team lead. “The Voyager 1 spacecraft is sometimes lifted up as our first interstellar spacecraft. It’s not a very big fella—it’s just a little bit under a metric ton, and it’s been going on now for about 33 years, headed straight out away from our solar system about as fast as it can go.”
    If you stuck a measuring stick out to it, it’s about 119 astronomical units (AU) away from the sun. (An AU is the distance from the sun to the Earth.)

    “It’s one of the highest energy objects that’s been launched to date,” White said. “Nothing that we’ve launched will catch up with it or has comparable energy levels. But if you wanted to predict how long it would take to get to the nearest star system, like Alpha Centauri, it would take around 75,000 years to get there.”

    In terms of our galactic neighborhood, Alpha Centauri is right around the corner at 4.3 light years (271,931 AUs), so 75,000 years would not be ideal—especially for a human crew. But if you threw a bunch of power and propulsion behind it, then what?
    Back in the 1970s, the British Interplanetary Society looked into what it would take to send a robotic probe to reach Barnard’s Star, about 6 light years (or 380,000 AU) away, within 50 years. Oh, just a 54,000-thousand-metric-ton spacecraft—92 percent of which is fuel. And, if you’re curious, that mass is well over 100 times the mass of the International Space Station.
    “When somebody comes with this study result telling me it takes 54,000 metric tons to go and do something interstellar within 50 years, that just tells me we need to be looking at some other loopholes in physics to see if we can find some other ways to make it a little bit more tractable,” White said.

    The loopholes, amazingly, can be found in mathematical equations. Those equations are tested using an instrument called the White-Juday Warp Field Interferometer.

    “We’ve initiated an interferometer test bed in this lab, where we’re going to go through and try and generate a microscopic instance of a little warp bubble,” White said. “And although this is just a microscopic
    instance of the phenomena, we’re perturbing space time, one part in 10 million, a very tiny amount.”
    By harnessing the physics of cosmic inflation, future spaceships crafted to satisfy the laws of these mathematical equations may actually be able to get somewhere unthinkably fast—and without adverse effects.
    “The math would allow you to go to Alpha Centauri in two weeks as measured by clocks here on Earth,” White said. “So somebody’s clock onboard the spacecraft has the same rate of time as somebody in mission control here in Houston might have. There are no tidal forces, no undue issues, and the proper acceleration is zero. When you turn the field on, everybody doesn’t go slamming against the bulkhead, (which) would be a very short and sad trip.”
    When you think space warp, imagine raisins baking in bread.
    “When you put dough in a pan there’s little raisins in the bread. As you cook the bread, the bread rises and those raisins move relative to one another,” White said. “That’s the concept of inflation in a terrestrial perspective, except in astrophysics it’s just the actual physical space itself that’s changing characteristics.”

    But for futuristic space travel, we aren’t going to be a passive player.
    “We’re trying to do something locally so that we compress the space in front of us and expand the space behind us in such a way that allows us to go wherever we want to go really fast while observing the 11th commandment, ‘Thou shall not exceed the speed of light,’” White said.
    While we are trying to reach neighbors within our solar system for the time being, we cannot help it if visions of distant star systems exist in our daydreams. Perhaps a “Star Trek” experience within our lifetime is not such a remote possibility.
     
  8. T-U-P
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    T-U-P The Punisher
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    Re: World News Thread & Breaking News!!

    sinodefence should make a team and do something like this... ;)
     
  9. bladerunner
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    bladerunner Banned Idiot

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  10. bladerunner
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    bladerunner Banned Idiot

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    Re: World News Thread & Breaking News!!

    50 Years of Incredible Space Images From the European Southern Observatory


    50 Years of Incredible Space Images From the European Southern Observatory | Wired Science | Wired.com



    The link below leads to some interesting aspects of the cassini voyage while the artile itself has sub links to some very interesting photoes of Titan. imo its well worth a look.


    http://www.csmonitor.com/Science/2012/1001/Space-boat-could-voyage-on-Saturn-moon-Titan-s-lakes

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    New Roles Eyed For Europe’s Versatile Cargo Tug

    http://www.aviationweek.com/Article.aspx?id=/article-xml/AW_10_01_2012_p42-499307.xml
     
    #60 bladerunner, Oct 3, 2012
    Last edited: Oct 3, 2012
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