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I am working on a college project which is based upon a experimental sounding rocket and it would be really helpful if the community could refer me good softwares to simulate trajectories of a rocket.

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    $\begingroup$ You can try openrocket.sourceforge.net $\endgroup$ – Michele Mar 11 '17 at 17:03
  • $\begingroup$ Sprinkle a little Runge-Kutta on your favorite language and you are good to go. $\endgroup$ – Erik Mar 11 '17 at 23:15
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The principal software that I found (and free) is the "Comprehensive General-Purpose Simulation of Attitude and Trajectory Dynamics and Control of Multiple Spacecraft Composed of Multiple Rigid or Flexible Bodies" from the NASA Technology Tranfer program. More alternatives in the same catalog:

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OpenRocket is free based on JAVA runtime. I have personally used this. So long so good. http://openrocket.info/

RockSim is a paid version.
RAS Aero is an other option.

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I believe you can specify a custom rocket and flight plan in flightclub.io

The examples below give you some idea of how it works. The big image is the first launch of the Falcon Heavy, you can see the two side boosters land on the left and the center booster over the horizon on the right.

Here are some example images found on the following pages. The developer of the site can be reached through the site and is also an occasional visiter here: @DeclanMurphy

  • this answer to What is this debris on the CRS-10 reentry at T6:30?
  • this answer to What is the velocity profile of a Falcon 9 first stage landing?
  • this answer to How can Flightclub.io Camera Tools be used to simulate launch photography geometry?
  • this answer to Understanding Flightclub.io simulation of SpaceX's Bangabandhu launch

flightclub.io Camera Tools view

flightclub.io

flightclub.io

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