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    Figuring out LEO possibility

    Hello, I am trying to build a stack using UCD and am trying to figure out if a certain rocket has enough thrust to take the payload to LEO. Is there any kind of equations I can use if I know the Thrust and Total mass of the stack? Also is there any way to determine how quickly a TLI-like stage...
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    General Question Setting planet approach up for return

    Hello, I've been gradually adding difficulty to each travel that I make in Orbiter. I know alot about orbiter and orbital mechanics that I didn't know months ago. I know how to travel to planets, do all the crazy aero stuff(other then aeroslinging) and stuff like that. I tend to use transx for...
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    Ion engines and other low thrust vs Ship mass engines

    Hello, I am having a problem when it comes to ships that have a low thrust vs the ship mass(ie the Perseus which is very very massive because of fuel and other ships like the ion engine class). The problem is that I can't seem to orbit eject properly with these types of engines because they...
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    Retrograde planets and objects

    Hello, I'm still learning rudimentary orbital mechanics so I apologize if I misinterpreted something. My question is that why is it that we have no retrograde orbiting planets in our solar system? I'm guessing this is because of the rotation of the planetary nebula when the planets were formed...
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