OpenRocket is a free, fully featured model rocket simulator that allows you to design and simulate your rockets before actually building and flying them.

The main features include:

Six-degree-of-freedom flight simulation
Automatic design optimization
Realtime simulated altitude, velocity and acceleration display
Staging and clustering support
Cross-platform (Java-based)

Read more about it on the OpenRocket Wiki.

Running OpenRocket

To start the software from the JAR file run:

$ java -jar OpenRocket-<VERSION>.jar

License

OpenRocket is an Open Source project licensed under the GNU GPL. This means that the software is free to use for whatever purposes, and the source code is also available for studying and extending.

Contributing

OpenRocket needs help to become even better. Implementing features, writing documentation and creating example designs are just a few ways of helping. If you are interested in helping make OpenRocket the best rocket simulator out there, please click here for information on how to get involved!

Contributors Sampo Niskanen, main developer Doug Pedrick, support for RockSim designs, printing Kevin Ruland, Android version Bill Kuker, 3D visualization Richard Graham, geodetic computations Jason Blood, freeform fin set import Boris du Reau, internationalization

Translators Tripoli France Tripoli Spain Stefan Lobas / ERIG Mauro Biasutti Sky Dart Team Vladimir Beran Polish Rocketry Society / Łukasz & Alex Kazanski