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This is basically my original concept for the MH12500 Heavy Lift Launch Vehicle standardised module. The baseline stats (basicly the mass budget allowances) are essentially identical to those I noted for the MH12500A module (the more advanced version). Although the mass budget is in the same range, the actual mass and capacity of the MH12500 are somewhat lower than the advanced version (this should be self evident, since the advanced version has the same dimensions, but "squares out" the structure toward the exterior). I have made a few revisions to the design. Instead of a lateral triple tank, I have pulled-in the walls of the first (innermost) pressure vessel to 10m diameter. This is now a single tank, intended to store LH propellant for Earth launch. The second vessel has been brought in to the original 12m diameter, but now serves as an outer wall for a concentric LOX propellant tank. This means that the inner tank now functions as a common wall for both LH and LOX tanks. The benefit of this is that less insulation is required for the LH tank, as there is less temperature differential. Likewise, as the cross-sectional proportions of the two tanks happen to be just about the optimal burn mix ratio (so the propellants will be consumed at the same rate, linearly), the LH tank can be much lighter, as the mass differential is also greatly reduced. The two propellant tanks share common "endcap" bulkheads.
This is a 12.5m x 25m "wet-workshop" module currently under development. It is a derivative of an older, purely cylindrical design (an updated version of which I expect to post in the near future... once I have solved a problem that I am having with my CAD programme). As a "wet-workshop" design, the module is intended for conversion to a habitat module following initial service as a propellant tank for a Heavy Lift Launch Vehicle. Given the intended eventual use, it is intentionally rather heavy for a propellant tank, with much greater mass than would otherwise be necessary or desirable. The MH12500A (The "MH" is obviously my initials, but it could also be interpreted as "Module-Heavy"; the number denotes the radius in mm; and, the "A" distinguishes this as a more advanced design) has a mass budget in the range of 80 to 100 tonnes, although it could prove to be much lighter in terms of actual structural mass (the remaining mass would be water added to the voids -I'll explain shortly- to provide extra radiation protection, as well as increased service water reserves). The much of this mass is intended to provide additional insulation / thermal protection, as well as micro-meteoroid and radiation protection. The design is intended to permit up to five of these modules to be stacked in an HLLV configuration, although four modules would be the standard load-out. There would also be a propulsion assembly with at least four independently ejectable thrust assembly modules (to be staged when the added thrust is no longer needed), together with a fifth integral module that places the HLLV in orbit; and a nose-cone fairing... all of which are intended for recovery and reuse. A single module stack is possible, with an estimated 10 tonne useful load capacity (in addition to the converted structure and propulsion mass). The mass allowances assume a mass distribution of 90% propellant (required for an SSTO to achieve LEO with an average Isp of about 400s), 7% structural mass (the STS ET actually achieved a structural mass of just over 3%), 2% propulsion systems (assuming a thrust/mass ratio of 50... normal ratios are closer to 75), and 1% payload. Among some of the more interesting features: * Each module actually has five shell layers, spaced by four 5cm void sections. This layering provides added low-mass insulation (incorporating the voids); as well as a "whipple shield" protection mechanism, enhancing the actual mass/material shielding. * The inner shell is actually composed of three distinct "tanks", incorporating common bulkhead techniques and technologies. The common bulkheads allow for decreased overall insulation requirements (since the common area has a much reduced temperature gradiant), as well as reduced containment mass (since the common area has a much reduced pressure gradiant). The integrated design provides greater mass protection against radiation and micro-meteoroids for the central volume. * The linear (vs stacked) common bulhead tank arrangement greatly reduces the length of plumbing necessary to distribute propellants, which actually reduces added mass considerably. * The modules are designed to "dock" with one another, with multiple docking ports, allowing for propellants to flow directly from tank to tank. Again, this reduces required piping mass. * Intertank modules will be designed to: support the mass of "strap-on" boosters; permit continuous flow-through for the outermost void (which may serve as an added or alternative propellant flow channel, if necessary); serve as load space, directly serving the adjacent modules; and accomodate eventual repurposing as tunnel wall support (etc). Modified intertanks could serve as an alternative propellant configuration (incorporating the flow-through capabilities of the outermost void spaces. The CAD drawings attached (converted to JPEGs) show the general arrangement of the voids, the three tanks of the interior shell, general boundary outlines for the remaining shells, one panel of the exterior end-cap bulkhead, and various construction lines. The parallel construction lines inside the tank space denote centrelines and boundary lines denoting compartment divisions. These latter consist of four lateral decks, themselves divided into a central corridor, two primary living space channels, and two supporting space channels. The outer decks and supporting space channels provide additional radiation shielding for living space areas.
Energy is a critical limiting factor in plans to develop a base on Mars into a manufacturing facility that can expand into a self-sufficient colony. It limits how much subsurface ice can be melted and processed, how many structural bricks can be baked, how much iron and glass can be smelted, and critically, how much CO2 and water can be processed into rocket fuel, plastics, and lubricants. The extreme cold also means that many types of equipment left outside will need to be heated to keep them operational. Importing power generation systems from earth would be costly for the organization sponsoring the base, and would limit what the colonists could do in terms of growing their industry during the 18 month periods between launch windows. Additionally, unexpected failure of power generation systems that cannot be replaced on-site would put the colony in danger, or at least drastically slow down its industrial growth. Using resources that are relatively simple to refine and readily available on Mars, like iron, glass, and polyethylene, what energy generation systems could be mass-produced by martian colonists with minimal use of materials imported from earth? The book “Mars: Prospective Energy and Material Resources” by Vlorel Badescu, which I read a year or so ago, gives several options, some more realistic than others. Two that stand out from a simplicity of manufacturing perspective are wind turbines and solar-thermal generators. (Yes, wind power is possible on mars, it’s because of the higher density of CO2 and the higher wind speeds) How would you go about designing and manufacturing these systems, or can you think of an alternative? I’m thinking that this could turn into a project that someone could build in their backyard at fairly low cost, which would demonstrate a piece of space technology that would be very useful to base designers and mission planners.
"Galaxy Quest" proposed flipping a Science Fiction TV show into a reality that even the cast didn't expect. This project is a reality that most of the world is unaware of. Suppose you launch a story about a group of dreamers putting a space venture together. As the story progresses viewers might begin to notice a familiar pattern as ideas they have heard about...somewhere. As the story progresses the characters are revealed to be not as fictional as initially presented. Now it may become clear that this is NOT science fiction, but fact...a documentary about this very venture. Social adventures only dreamed of on "Star Trek" combines with evolving technologies that open the door to make that reality. Your cast may be unaware of the plan too, thinking this to be a documentary. This reality show cannot be micro-managed like current TV shows as these people have real work to do. But witnessing this all become reality is a real adventure, and that revelation may provide some real excitement. But remember, even NASA experienced a love triangle issue, so keep shields up in case of real misadventures too!
Hi there, I'm Adam... and I'm new here. I've written somewhat extensively about "space travel" and the prospects that I see--the good ideas and some commentary on the bad ones that pervade our current attempts and also our history and fiction. I don't particularly ever want to see "space" myself--firmly entrenched in the concept that the Earth is in virtual reality, and that that itself is a something of a "great secret" in a world that should see pretty clearly ... at least if you connect the color blue to Heaven as I do ... that names like "Blue Origin" seem to echo the ancient Biblical phrase from the Lord's Prayer. SPAC-GAM ... and "abstracted" as the key to "humanity" and holographic universe: http://en.reallyhim.com/N8SRADIN.html Not here to "poo poo" ideas like the Point of Origin (stolen from Stargate SG-1 pre "New Jack City") of life in the Universe being a "truly terran thing" ... just to point out the word "cry" in cryogenics and suggest that perhaps our bodies and our buildings aren't the best vector for "entry or survival" in a place where we are probably better off living "between worlds and stars" than around them or orbiting them. It might be such a big deal that "changing our perspective" to see "intergalactic domicile" as the truly safest place of all, that it could be "afterlife or death" for this place that seems to have it's head buried in the sand. Nero loves Pac-Man is the title of my latest book, though it doesn't have much to do with either one, I've already played this game and cried because of all the songs. It's important, though, to see our blindness and our "mutedness" lifted quickly, each passing day I grow a little bit more somber and despondend that we might really never connect "Pac-Man" to Space Man or to Vietnam or to the book just before that, "So... viet name?" I'm not sure if the impact of Vietnam and "Soviet" having no etymological or historical connection to each other ... aside from the "missing e" that connects all these ideas together, but I am sure that what I've written is noteworthy and widely ... received, even if it must be very unrespected. https://i.imgur.com/Pemri3V.jpg On Mars colonization, Total Recall, and Bush's Boring machine that preceded Elon's dream: http://fromthemachine.org/MARSHALL.html On "Ad Astra" and wondering what on Earth we desire to actually be filling the stars with, in this land that has forgone democracy and freedom in sum in exchange for ... what appears to be very little from my vantage point: https://lamc.la/TOASTRAM.html The reason for "Space Man" and K-PAX linking to Comey and Spacey; "heh" ... https://gruyerewak3nx2em.onion.pet/CONNETICUT.html https://i.imgur.com/kQIu9Mk.png The reception I get from the world--which I guage from a mailing list of hundreds of thousands isn's so great--as in it typifies "Sound of Silence" and Dr. Who's ugly invisible alien ... imagery. What I don't write about or share is even more gloomy and dark than the things that I have been. At this point I'm fearful of what we'd become "in space" ... I see the world and the state of "morality" and "freedom" on a steep downward decline that really needs "some kind of disruption" in my Soprano's voice. I hope you'll actually respond here--with care and love. I think we have a clear map to "the right thing to send to intragalactia" and it's closer to connecting "Dust in the Wind" and "Skynet" to a nanodust meshnet than a bunch of buoy'd copies of Earth peppering the road from here to Andromeda. https://izing.bitbucket.io/MEVATHI.html http://lamc.la/B2BIONIC.html This place, and space, and a "good future" ... these things are all about revitalizing democracy, and until we do that--I'm scared that you'll get out--rather than uhhh, having any kind of key to the Universe; other than, you know, my name. "and the bombs bursting ..." http://lamc.la/CRUELGENIAD.html https://en.reallyhim.com/REASON.html https://gruyerewak3nx2em.onion.pet/BELINSKY.html "gave proof" I think they're all good, I really do--but it all means nothing if other people aren't screaming "ELE" in electoral college means more than one person "getting a date." https://igruyerewak3nx2em.onion.pet/GRENORADINE.html "i see night." To me, all roads had led from Rome to here--from some past or "up in the air" future that comes back and re-runs their tarnished and tattered youths to find something they'll never understand is their hearts--see clearly all roads here stem from this message and "xx!!i" and Proverbs 4:23; guard our heart, for it is this Earth and without it there is nothing. I've called it "phytoplankton" and "magneto space mold" ... but the grande point of the whole thing is that "electicity and power" are not our problem, we have a problem with thinking we have all the answers before we get started, and that the "magic genie in the lamp" will simply give us everything ... for playing its games and falling for its tricks. https://i.imgur.com/lcLf9Qn.jpg It doesn't matter how real you think it is, or how sure you are that "you're out" ... I've seen in the most auspicious of places--at for me--in the names of our books and diseases, that we are staring at "ORVER ET AUTISM" .. that we have a real disease here named for this idea that we're on "/away" and don't have to pay attention to the place where our minds and souls were truly born and conceived and altered without ... "oversight" or "clear understanding here" of what ascension really means. It's "over and out" in uhhh, scary Vincent Ichban voice; and the price of not caring that "holographic universe" is the start "humanity" and our end; until we overcome trying to escape "the better solution" the actual progenitors of our world conceived, we'll be stuck fighting and creating fake "line feeds" and Bostrom/Rock and Amorty like "sim within sims" until the end of Tartarus ... This is the one I'd buy if I really wanted something rare, it would be a great help to me--I'm starving literally--not just of hunger for food and conversation, but for faith in our ability to "will eternity to be ours." https://www.amazon.com/XIV-ORVER-Adam-Marshall-Dobrin/dp/1793018081 "until the end of Tartarus..."
This is a revision of a project that I have been working on for a few years now. Oringinally, I started work on it as a concept proposal for a "Universal Lander" for BuildTheEnterprise (BTE), building off the visual inspiration of the "Jupiter 2" from the Lost In Space television series. At 50m diameter and 12.5m height, the J2 is a very large craft. After having concluded some initial volume studies, I have determined that the loaded "wet" mass is roughly equivalent to an Apollo Saturn V, when the J2 is configured for SSTO launch from Earth to LEO. The assuptions are that the propellent mass constitues 90% of the wetmass (the requirement for obtaining the effective 9.5 km/s delta-v necessary to transit to LEO), propulsion systems are allocated 2% (coinciding with a very conservative thrust/weight ratio for most rocket thrusters), a target structural mass ratio of 7%, which would allow 1% mass ratio for useful payload. Technically, this means that the craft can "only" lift about 35 tonnes to LEO, which is less than what the Saturn V was able to deliver to the moon; however, the J2 is a "wet workshop" platform, and will itself constitue an additional 300 tonnes of payload, with several times more habitable volume than the ISS. The "useful" payload would allow the J2 to operate with a crew of 5 for well over 2 years... and that is assuming that all closed-loop Environmental Life Support systems break down (leaving only basic filtration systems). Although fully capable of interplanetary operations (when fitted out with appropriate propulsion and power supply systems), the J2 is intended for more localised operation. The J2 is designed to serve as a functional annex to larger craft on interplanetary missions. Once delivered to a mission destination, it can fill a number of varying roles. Notably, these roles would include bulk deliveries to colonies (normally orbit to surface), and other high mass transports; large capacity personnel transports; as well as long term "platform" deployments. As an example of the latter group of roles, the J2 could serve as a local command centre for colony development operations. In case of emergencies, the J2 could evacuate 250+ persons to an alternative site, or even into orbit. The J2 is design for LOX/LH combustive propulsion for Earth operations, but is easily adaptable to LOX/liquid methane propulsion for other locations, where environmental impact is not a major concern. It is equally adaptable to support various propellants for VASIMR, or other, electric drives for space operations. Importantly, with 12 convertable pressure hulls, J2 an support everal different propulsion systems simultaneously. Ideally, J2 would likewise be able to support eventual nuclear power and propulsion operations, but this would be well beyond SpaceDecentral's projected capacities, for various reasons. J2 would definitely be a long-term project, probably in the 30 year time frame. That said, the concept has been developed around existing materials that are already in, or entering, the mainstream market. Likewise, although the scale will require a considerable amount of testing, the concept has also been developed around production technologies that have been firmly established. On a conceptual level, there is nothing that is reliant on purely theoretical projections of future capabilities and/or properties. In other words, although future technologies could make a better craft, we have everything we need to build the J2 now.
The Space Decentral Way
- Initial collaboration is fostered through the community-driven curation of a portfolio of projects
- Requirements and goals are defined for the projects in order to guide the solution stage
- Community members are incentivized to submit open-source action plans through a competitive “request for proposals” process
- Action plans are vetted using a transparent decision-making process
- The best proposal for each project will be added to a digital commons, with alternates archived
- Everyone will have access to these shared commons and will be enabled to take action
- Funds are collectively raised to support the development, testing, and launch of top action plans
- Jobs are created and work contracts are assigned based on solution proposals
- Collaborative research and shared visions become realities
- Contributions are rewarded upon commercial adoption of solutions seeded from the digital commons