I'm trying to design a three-stage rocket ascent flight trajectory to LEO using AGI's Software SKT but I'm in trouble. Could anyone help me with designing it?

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    $\begingroup$ Could you explain your problem a more detailed? What are your STK licenses. What do you know about the trajectory? How realistic do you want it to have? $\endgroup$ – CallMeTom May 29 '20 at 10:27
  • $\begingroup$ Hi @Forbraer welcome to Stack Exchange! If you have a look around at other questions you'll see they are fairly specific and are written so that they can have a clear, concise and correct answer. This is definitely the right site to look for help, but could anyone help me with designing it? is way too broad. Like the other comment suggests, please add more information about your specific situation and chose one small part of the problem for each question you ask. $\endgroup$ – uhoh May 29 '20 at 13:00
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    $\begingroup$ For example, have you had success with one and two stage rockets already and it's only the three stages that's the problem, or in fact are you really just getting started. If so, please explain what you have gotten working so far. Thanks, and welcome to Space! $\endgroup$ – uhoh May 29 '20 at 13:00
  • $\begingroup$ Well, I'm new using STK. I don't to be so strict in simulation, just want to set some inputs as Isp, fuel mass, structure mass, things like we use in Tsiolkovisk's equation. $\endgroup$ – Forbraer May 30 '20 at 17:55
  • $\begingroup$ I recieved it in AGI Fórum: " this is not an easy task, especially getting the attitude right is tricky. Start out with an initial state segment. Set the coordinate system to Earth Fixed, set the coordinate type to Mixed Spherical and start stationary at the location you want to take off from. Then add a maneuver segment that initially sends you straight up so use a reference frame that has an up or down component. [...] $\endgroup$ – Forbraer May 30 '20 at 17:59

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