GMAT

GMAT 2014.0

Free
You can model, optimize and estimate spacecraft trajectories
 
2014.0 (See all)

GMAT is an open source space trajectory optimization and mission analysis system. The program is used for real-world engineering studies, as a tool for education and public engagement and to fly operational spacecraft. You can model, optimize and estimate spacecraft trajectories in flight regimes ranging from low Earth orbit to lunar applications, interplanetary trajectories and other deep space missions.

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