A free, fully featured model rocket simulator for designing and simulating rockets before building and flying them.
OpenRocket is a free, open-source software for simulating the aerodynamics and flight trajectories of model rockets. It allows users to design rockets using built-in components, visualize them in 3D, and run detailed simulations to predict performance before actual construction. The tool helps optimize designs for stability, altitude, and other flight characteristics.
Model rocket enthusiasts, students, educators, and engineering researchers involved in rocketry who need a reliable simulation tool for design validation and performance analysis.
Developers choose OpenRocket because it offers a fully featured, free alternative to commercial rocket simulators like RockSim, with advanced capabilities such as six-degree-of-freedom simulation, automatic optimization, and extensive export options. Its open-source nature allows for community contributions and customization.
Model-rocketry aerodynamics and trajectory simulation software
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Provides six-degree-of-freedom flight dynamics modeling for realistic trajectory predictions, a core feature highlighted in the README for accurate aerodynamics.
Offers built-in optimization tools to suggest improvements for better performance, streamlining the design process without manual iteration.
Java-based application runs on Windows, macOS, and Linux, with installers available via Snap and Chocolatey, ensuring broad accessibility.
Supports exporting to RockSim, RASAero II, OBJ for 3D printing, and SVG for laser cutting, facilitating integration with other tools and manufacturing processes.
Active community contributions include Python scripting via orhelper and related projects, enhancing extensibility and support for advanced use cases.
Requires Java installation, which can add setup complexity and potential performance overhead compared to native applications, especially on resource-constrained systems.
Advanced features like six-degree-of-freedom simulation and optimization parameters may overwhelm beginners, despite the provided example designs and documentation.
Real-time atmospheric data import isn't built-in; users must rely on external tools like ORWind for wind data, adding extra steps for accurate simulations.
OpenRocket is an open-source alternative to the following products: