Tag: Lambert

Earth-Mars Free Return

Let’s try using the Fortran Astrodynamics Toolkit and Pikaia to solve a real-world orbital mechanics problem. In this case, computing the optimal Earth-Mars free return trajectory in the year 2018. This is a trajectory that departs Earth, and then with

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Porkchop Plots

A porkchop plot is a data visualization tool used in interplanetary mission design which displays contours of various quantities as a function of departure and arrival date.  Example pork chop plots for 2016 Earth-Mars transfers are shown here.  The x-axis is the Earth departure

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Fortran Astrodynamics Toolkit

I’m starting a new project on GitHub: the Fortran Astrodynamics Toolkit. Hardly anyone is developing open source orbital mechanics software for modern Fortran, so the time has come. Most of the code from this blog will eventually find its way

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