OpenRocket is a free, fully featured model rocket simulator that allows you to design and simulate your rockets before actually building and flying them.
Explore scale models, detailed decals, pods, staging, and unusual fin shapes. Browse the gallery or watch Vortikon rotate.
You can find the OpenRocket installers here.
Release notes are available on each release's page or on our website.
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Design your rockets using a rich selection of built-in components:
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Visualize your masterpiece in 3D:
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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 or SVG for laser cutting
- Cross-platform (Java-based)
... plus many more
📖 Read more on our website.
OpenRocket does not collect telemetry or upload rocket designs. It makes network requests for user-facing functions such as checking for application and motor-database updates, opening online resources, and submitting a bug report when requested by the user. Internet access can be disabled in the application preferences.
You can find our documentation on ReadTheDocs.
Check out our documentation for a detailled guide on how to get started.
The easiest way to get familiar with OpenRocket is to open one of our in-program example designs:
Dive into the essentials: adjust component dimensions, plot a simulation, swap out motors, and more. Explore the impact of your changes and, most importantly, enjoy the process! 😊
Note: If you have an OpenRocket-related project you would like included in the list, you can file a new issue for it.
| Project | Type | Description |
|---|---|---|
| openrocket/openrocket | Core project | Main simulator (Java) |
| openrocket/openrocket.github.io | Website source | Website content (Jekyll) |
| openrocket/openrocket-database | Data enhancement | Expanded parts catalog (originally dbcook/openrocket-database) |
| Project | Type | Description |
|---|---|---|
| openrocket/orhelper | Integration (Python) | Python scripting/module for OpenRocket (via JPype) (forked from SilentSys/orhelper) |
| RocketPy-Team/RocketSerializer | Integration (Python) | Convert .ork files to RocketPy-compatible formats |
| SpaceTeam/ortools | Integration Tools (Python) | Scripts like 6DOF landing scatter visualization |
| schrum2/OpenRocketQD | Optimization tool (Python) | Quality Diversity optimization for rocket designs |
| waterloo-rocketry/or-monte-carlo | Simulation tool (Java) | Monte Carlo simulation wrapper for OpenRocket |
| Project | Type | Description |
|---|---|---|
| SpaceTeam/ORLEG | Engine modeling (Python) | Liquid-engine generator for OpenRocket |
| WPI-HPRC/ORBrake (archived) | Plugin (Java) | Active drag control (air-brakes) |
| Project | Type | Description |
|---|---|---|
| ORWind | Atmospheric data utility | Fetches/imports multi-level wind data for OpenRocket |
| Aloft | Weather data utility | Retrieves weather/atmospheric profiles (winds, temp, pressure) for flight simulation |
| Project | Type | Description |
|---|---|---|
| FreeCAD Rocket Workbench | CAD workbench | A rocket design workbench for FreeCAD that can import OpenRocket .ork files |
| Project | Type | Description |
|---|---|---|
| TrinetraOne-OpenRocket | Example designs | Showcase rocket project |
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, LWJGL 3D engine, maintainer
- Neil Weinstock - Tester, icons, forum support
- H. Craig Miller - Tester
You can view the full list of contributors here.
Windows code signing provided by SignPath.io.
- 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
- Oleksandr Hladin
- taotieren Simplified Chinese
- Yüksel Dağhan Güven
Crowdin translators:
Sibo Van Gool (sibo.vangool) 164104 words ar, zh-CN, cs, nl, fr, it, ja, pl, pt-PT, ru, es-ES, tr, uk
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3Dmachine 29030 words fr, es-ES
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Yüksel Dağhan Güven (guvendaghan01) 3355 words tr
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Fabosch 1752 words cs
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guneyozsan 908 words tr
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Hello.1234a (hakucin) 136 words ja
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Want to help us translate OpenRocket into your language? Join our Crowdin project and contribute!
OpenRocket is proudly open-source under the GNU GPL license. Feel free to use, study, and extend.
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