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

1. Design your rockets using a rich selection of built-in components:

2. Visualize your masterpiece in 3D:

3. Plot & Analyze your simulation results for precision and improvements:

• Six-degree-of-freedom flight simulation
• Automatic design optimization
• Realtime simulated altitude, velocity, and acceleration display
• Staging and clustering support
• Export to other simulation programs (RockSim, RASAero II)
• Export component(s) to OBJ file for 3D printing
• Cross-platform (Java-based)

... plus many more

📖 Read more on our website or the OpenRocket Wiki.

You can find the OpenRocket installers here.

Release notes are available on each release's page or on our website.

The easiest way to get started is to open one of our in-program example designs:

Dive into the essentials: adjust component dimensions, plot a simulation, swap out motors, ... Explore the impact of your changes and, most importantly, enjoy the process! 😊

Help us soar higher! Whether it's implementing features, writing documentation, or creating design examples, every contribution matters. Interested? Check out how to get involved and the practicalities of contributing.

• Sampo Niskanen - Original developer
• Doug Pedrick - 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
• Daniel Williams - Pod support, maintainer
• Joe Pfeiffer - Maintainer
• Billy Olsen - Maintainer
• Sibo Van Gool - RASAero file format, 3D OBJ export, dark theme, maintainer
• Neil Weinstock - Tester, icons, forum support
• H. Craig Miller - Tester

You can view the full list of contributors here.

• Tripoli France
• Tripoli Spain
• Stefan Lobas / ERIG
• Mauro Biasutti
• Sky Dart Team / Ruslan V. Uss
• Vladimir Beran
• Polish Rocketry Society / Łukasz & Alex Kazanski
• Sibo Van Gool
• Mohamed Amin Elkebsi

OpenRocket is proudly open-source under the GNU GPL license. Feel free to use, study, and extend.

⭐ Please give us a star if you find OpenRocket useful, and spread the word! ⭐