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Showing content with the highest reputation on 09/30/2017 in all areas

  1. 4 points

    Colonization Of The Solar System

    Colonization Of The Solar System This thread is for discussing the colonization of the solar system, mainly focusing on Mars and the Moon since they are the most relevant. Main topics include transportation, industry, agriculture, economics, civil engineering, energy production and distribution, habitation, ethics and politics. First order of business, our glories tech messiah Elon Musk has set his eyes on Mars: Reason stated? Because being a interplanetary species beats being a single planetary species. How does he plan to do this? By sending two cargo ships by 2022 to Mars for surveying and building basic infrastructure, then two years later in 2024 sending 4 ships, two cargo ships and two crewed ships to start the colonization. First thing would be to build fuel refineries and expanding infrastructure to support more ships, then starting to mine and build industry. This could mark a new era in human history, a second colonization era, this time without the genocides. The economic potentials are incredible, a single asteroid could easily support the entire earths gold, silver and platinum production for a decade. The moon holds a lot of valuable Helium 3, which right now is worth 12 000 dollars per kilogram! Helium is a excellent material for nuclear reactors. Speaking about the moon, several companies have set their eyes on the moon, and for good reason. In my opinion, the moon has the possibility of becoming a mayor trade hub for the solar system. Why is this? Simply put, the earth has a few pesky things called gravity, atmosphere and environmentalists. This makes launching rockets off the moon much cheaper. The moon could even have a space elevator with current technology! If we consider Elon Musk's plan to travel to Mars, then the Moon should be able to supply cheaper fuel and spaceship parts to space, to then be sent to Mars. The Moon is also rich in minerals that have not sunk to the core yet, and also has a huge amount of rare earth metals, which demands are rapidly increasing. Simply put, the Moon would end up as a large exporter to both the earth and potentially Mars. Importing from earth would almost always be more expensive compared to a industrialized Moon. Now how would we go about colonizing the moon? Honestly, in concept it is quite simple.When considering locations, the South pole seems like the best candidate. This is because of it's constant sun spots, which could give 24 hour solar power to the colony and give constant sunlight to plants without huge power usage. The south pole also contain dark spots which contains large amount of frozen water, which would be used to sustain the agriculture and to make rocket fuel. It is true that the equator has the largest amounts of Helium 3 and the best location for rocket launches. However, with the lack of constant sunlight and frequent solar winds and meteor impacts, makes to unsuited for initial colonization. If the SpaceX's BFR successes, then it would be the main means of transporting materials to the moon until infrastructure is properly developed. Later a heavy lifter would replace it when transporting goods to and from the lunar surface, and specialized cargo ship for trans portion between the Moon, Earth and Mars. A space elevator would reduce prices further in the future. Most likely, a trade station would be set up in CIS lunar space and Earth orbit which would house large fuel tanks and be able to hold the cargo from cargo ships and heavy lifters. Sun ports would be designated depending on their amount of sunlight. Year around sunlight spots would be dedicated to solar panels and agriculture. Varying sun spots would be used for storage, landing pads and in general everything. Dark spots would be designated to mining to extract its valuable water. Power production would be inistially almost purely solar, with some back up and smoothing out generators. Later nuclear reactors would take over, but serve as a secondary backup energy source. The plan: If we can assume the BFR is a success, then we have roughly 150 ton of payload to work with per spaceship. The first spaceship would contain a satellite to survey colonization spot. Everything would be robotic at first. Several robots capable of building a LZ for future ships, mining of the lunar surface for making solar panels for energy production, then mining and refinement for fuel for future expeditions. The lunar colony would be based underground, room and pillar mining would be used to cheaply create room that is also shielded from radiation and surface hazards. Copying the mighty tech priest, a second ship would come with people and more equipment. With this more large scale mining and ore refinement would be started. Eventually beginning to manufacturing their own goods. Routinely BFRs would supply the colony with special equipment like electronics, special minerals and advanced equipment and food until the agricultural sector can support the colony. The colony would start to export Helium 3 and rocket fuel, as well as spacecraft parts and scientific materials. Eventually becoming self sustaining, it would stop importing food and equipment, manufacturing it all themselves to save costs. I am not the best in agriculture, so if some knowledge people could teach us here about closed loop farming, or some way of cultivating the lunar soil. Feel free to do so. Mining: I found a article here about the composition of the lunar soil and the use for it's main components: In short, the moon has large amounts of oxygen, silicon, aluminum, calcium, iron, magnesium and titanium in it's soil. How do we refine them? By doing this. Aluminum could be used for most kinds of wiring to requiring high conductivity to density ratio. Meaning power lines, building cables and such. Aluminum is not very suited for building structures on the surface because of the varying temperatures causing it to expand and contract. Iron or steel is better suited here. Aluminum could however be used in underground structures where temperatures are more stable. Aluminum would also most likely end up as the main lunar rocket fuel. Yes, aluminum as rocket fuel. Just look at things like ALICE, or Aluminum-oxygen. Aluminum-oxygen would probably win out since ALICE uses water, which would be prioritized for the BFRs, since I am pretty sure they are not multi-fuel. More on aluminum rocket fuel here: https://forum.kerbalspaceprogram.com/index.php?/topic/88130-aluminum-as-rocket-fuel/& http://www.projectrho.com/public_html/rocket/realdesigns2.php#umlunar https://blogs.nasa.gov/Rocketology/2016/04/15/weve-got-rocket-chemistry-part-1/ https://blogs.nasa.gov/Rocketology/2016/04/21/weve-got-rocket-chemistry-part-2/ Believe it or not, but calcium is actually a excellent conductor, about 12% better than copper. So why do we not use it on earth? Because it has a tendency to spontaneously combust in the atmosphere. In a vacuum however, this does not pose a problem. I does however need to be coated in a material so it does not deteriorate. This makes it suited for "outdoor" products and compact electrical systems like electric motors. Yes, a calcium electric motor. Lastly, a few articles about colonizing the moon: https://en.wikipedia.org/wiki/Colonization_of_the_Moon https://www.sciencealert.com/nasa-scientists-say-we-could-colonise-the-moon-by-2022-for-just-10-billion https://www.nasa.gov/audience/foreducators/topnav/materials/listbytype/HEP_Lunar.html NASA article about production of solar panels on the moon: https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20050110155.pdf Map over the south pole: http://lroc.sese.asu.edu/images/gigapan Feel free to spam the thread with news regarding colonization.
  2. 2 points


    plethodon shermani/teyahalee hybrid
  3. 1 point
  4. 1 point

    WoT v WT effort-thread

    Bush mit Malyutka
  5. 1 point

    The Leopard 2 Thread

    Some more information on the mass distribution of the Leopard 2: R. Hilmes gives the following mass distribution: Total System Weight: 55.150 kg Electronic components: 3.860,50 kg - 7 % Powerpack + full fuel tanks: 8.548,25 kg - 15,5 % Running Gear (.i.e: tracks, suspensions, wheels, etc.); 11.857,25 kg - 21,5 % Bare hull and turret with composite armor inserts: 26.472 kg - 48 % Weaponry (main gun, Coax MG, etc.): 4.412 kg - 8% (not sure whether or not this includes the gun mantlet or not.) W. Spielberger/ Oberst Icken gives the following values: Turret mass without ammunition+equipment: 16.000 kg Turmgehäuse/Turret Shell: 8.910 kg Hull mass without ammunition+equipment: 37.800 kg Panzerwanne/Hull Shell: 12.100 kg Total hull and turret shell mass: 21.010 kg Main Weapon System (120 mm RH gun) without mantlet: 3.100 kg 1. The bare hull and turret mass is stated to be around 26.472 kg with composite armor inserts. The empty turret and hull shell has a combined mass of 21.010 kg 2. This let's me believe that the composite armor in both the hull and turret has a total mass of 5.462 kg.
  6. 1 point
    Willy Brandt

    General AFV Thread

    Also for the german speaking or google translating crowd the "thesis paper" from a group of officers from the Army Command on how the Army will fight in the future. http://www.pivotarea.eu/wp-content/uploads/2017/09/OOO.pdf Here in a shorter article form but still in german. Maybe just the opinion of some officers but who knows. I posted it here because i didnt know where else it would fit. If there is a more fitting thread just move it there! TL:DR: Drones, more Drones, the Empty Battlefield, Artillery, Jammers, Sensors, A2/AD, Mines and SEAD make a comeback and rather reasonable assumptions.
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  8. 1 point
    30 minutes traveling anywhere in the world, and half a day dealing with the spaceport.
  9. 1 point

    The Body Armor Thread

    Old style
  10. 1 point

    Random Space Exploration Dump Thread

    Go big or go home: http://www.bbc.co.uk/news/science-environment-41441877 To pay for the BFR, spaceX will totally refocus on BFR - falcon will stop production. Relying on a stockpile of legacy rockets (dragon and falcon) isn't as bad for spaceX as it is for other operators, because they can reuse the rockets, but it's still a bold move. Especially since they're expecting the totally reusable BFR to take over the small satellite market and still be cost competitive (might work if they have several satellites that want to be in similar orbits?). Rocket travel between cities is cool, but unlikely. Rockets have avoided green taxes because no-one used them for travel - using rockets for transport will make it a target for hippies.
  11. 1 point
    Yeah, I was going to say that this is certainly not the first time I've seen EU folks talking about their need for an EU army. Our boy Jean-Claude Junker has talked about it in the past on several occassions. Coincidence? I think not!
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  15. 0 points

    WoT v WT effort-thread

    The results of last night's drunken T-35 clubfest are in.
  16. 0 points
    Oedipus Wreckx-n-Effect


  17. 0 points
    In worse news, damage to the Arecibo Observatory from Hurricane Maria; https://www.space.com/38242-arecibo-observatory-hurricane-maria-damage.html