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Metal Iris Umbrella, or Slatted Umbrella Since your design always points the hub towards the Sun, the primary heat source, it makes designing a light shield really easy. Build a tower directly outward from the hub (it can have an offset if you want landings there). Build a sun-blocking structure that can be fine-tuned. There are many good shapes. The ...


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Rearrange, and increase the size of, your solar panels so that they almost completely shade your entire cylinder from the sun. The only openings you need are an entrance to your mirror system for internal lighting. Arrange any needed radiators on the external hull, which will still be shadowed, allowing for excellent cooling efficiency. Note that a ...


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those habitats are part of a Dyson swarm in my design. Therefore, any radiation from this outer lateral area would be absorbed by the other habitats and not radiated to space. A perfect circle 1AU in radius has a circumference of nearly a billion kilometres. A McKendree cylinder is about 1000km across. If separated from each other by 1000km, you'd be able ...


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Heat pipes are the answer: These were used for the McKenzie Valley pipeline to keep the permafrost cold under the supports. Thought experiment: Take a 30 foot long steel pipe, and put a few gallons of liquid propane in it. Let it boil, pushing the air out. Cap it. Propane liquifies at -40 under normal atmospheric pressure and temperature, and is a ...


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Your Tidal Locking Dilema You are already pointing tidally locked solar panels at the sun, simply place the panels between the sun and your habitat. This puts your whole living space in their shadow. Then you just need to evenly distribute things inside of your habitat that generate heat (lighting, computer systems etc.) such that they are evenly ...


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It can be what you need it to be. Energy of activation is a useful concept. Suppose I embark on dimensional travel, across town. I am riding my dirt bike. I start on the left of the graph. I must input a lot of energy to climb that hump. I get it all back and more on descending to the other side. A different ride might have a lower hump, or no hump ...


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It would have to lift its mass at least 40000 kilometers This doesn't make a whole lot of sense. On Earth, a space elevator needs to have that sort of length because it needs to reach out to the geosynchronous point plus a bit more to the counterweight. A space fountain can be of more or less arbitrary size, which means you only need to build it long enough ...


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I found this image online that I think is a much better explaination of what a space fountain is: From this my understanding is that a space fountain is basically like a bicycle chain of magnets holding a space station in place rather than a solid tether. You could then also build an elevator to ride the rotating magnets up and down. I don't think this ...


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