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    As NERVA is on the list, I might also recommend the Russian RD-0140 (https://en.wikipedia.org/wiki/RD-0410).

    On a semi-related note, since we're going nuclear, can we add new 'fuel' sources? I'm thinking we need an RTG.

    https://en.wikipedia.org/wiki/SystemsforNuclearAuxiliaryPower

    And this is a real lark, but can we add a polywell fusion reactor based on either the Lockheed Compact Fusion Reactor (at least as originally conceived) or the Polwelly WB-8?

    +2 5.3 years ago
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    I actually learned about SimpleRockets 2 from Scott Manley, who gave a very fair and positive review. Since purchasing it, I have utterly destroyed my personal productivity, and my wife is ready to divorce me.

    https://www.youtube.com/watch?v=kDpje-hJXYs

    +1 5.3 years ago
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    Could it maybe be captured in the cargo bay of a shuttle which then transfers it to a lower orbit? I include docking rings on my satellites. You can capture them this way, refuel them, reposition them, or deorbit them.

    +1 5.3 years ago
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    I started a space station. I have one module up now which is basically just a large battery, a big tank of mono-propellant, RCS, and a large solar array. The next module is actually a crew return module, but I have to learn how to do an orbital intercept.

    I also created a stupidly OP heavy lift vehicle. Basically 5 Apex I engines on a large tank and a faring to house either three cylindrical modules at a time, or one oddly shaped module.

    5.3 years ago
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    Switch to map view, and select the moon or planet. Then click the little icon on the right under "Map View" that looks like four corners. This sets that body as your target. Then you'll see a green and orange arrow (nodes) appear along that body's orbit indicating alignment to your periapsis and apoapsis. Warp ahead until that arrow starts to come around to the body. (There's actually a button that will warp you directly to that node.) If you select "High" under UI Verbosity, it will give you a countdown. At 0, fire your engines. As your energy builds, your orbit will begin to grow more parabolic, with the periapsis approaching the target body's orbit. The UI will then give you a bunch of indicators about your approach, intercept, etc.

    You can also do a planned burn: https://www.simplerockets.com/Blog/View/1919/Planned-Burns

    5.3 years ago