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View Code? Open in Web Editor NEWA space launch simulator
A space launch simulator
Space Launch Simulator v0.1a William Earley Feb 2013 License: GPLv3, see gpl.txt If you use this software, please reference the original This software will compute many different variables over the course of a launch simulation. It is generalised, and you can input any number of stages and burn phases, with ranges or constant ISPs and other variables python sls.py Run the above command to see sample output data for the Apollo 11 Saturn V, first 11:52 of the launch, using a mission profile from http://www.braeunig.us/apollo/saturnV.htm Note that the simulation does not exactly reproduce his results, however it was close enough for my needs, feel free to tweak the mission profile to more closely approximate the launch There is currently no documentation, below is a brief description of each python file and what it does to try to make up for the lack of documentation, please also note that all units are SI interpolation.py provides a number of mathematical tools for interpolating by akima cubic spline, integrating, matrices and linear system solving, and others rocket.py provides a number of generic classes for holding data for use in other classes atmosphere.py provides an atmosphere class, which takes in a csv file containing: altitude /m air temp /K air density /kg/m3 pressure /Pa molar mass /g/mol specific heat ratio and then provides functions interpolating all of these values across the entire altitude range, make sure that the altitude is in the correct order, and increasing sim.py provides the sim class, which carries out the simulations. A sample use is in sls.py sls.py may one day be a front end for the simulator, currently just performs one example launch (Apollo 11 Saturn V) and saves the distance/drag data to the file sim.dat for use in gnuplot
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