Release Notes

OpenRocket 22.02 (2023-02-08)

The 22.02 release includes hundreds of new features, bug fixes, and UI improvements, more than we could ever fit into one set of release notes. These notes summarize the highlights of the entire release; for more detail consult the notes from the five previous public beta releases.

Please note that version 22.02 is required for Macs running macOS 13.0 or later.

New Features

Simulation and Staging Improvements

UI Improvements


…plus about a billion bug fixes and so much more.

Huge thanks to all the users who gave us feedback throughout the public beta period and helped us get to our first release in eight years!

OpenRocket 22.02.beta.05 (2022-09-28)

New Features

UI Improvements

Notable Bug Fixes


OpenRocket 22.02.beta.04 (2022-06-17)

Please note: For this new beta, the packaged installers are now back to using Java 11, due to multiple bug reports related to Java 17. However, the JAR file will still allow Java 11 or 17, so if you want to keep experimenting with Java 17 then feel free.

New Features

Notable Bug Fixes


OpenRocket 22.02.beta.03 (2022-05-18)

New Features

Notable bug Fixes


OpenRocket 22.02.beta.02 (2022-03-26)

NOTE: Tube fin simulation is currently broken, and will be fixed in a future beta.

New Features

Notable Bug Fixes


OpenRocket 22.02.beta.01 (2022-02-25)


New Rocket Design Capabilities

Staging Improvements

Simulation Improvements

Rocket Appearance

User Interface


plus many, many additional bug fixes and refinements

OpenRocket 15.03 (2015-03-28)

OpenRocket now requires Java 1.7 for execution.

New Features

Bug Fixes

OpenRocket 14.11 (2014-11-02)

New Features

Bug Fixes

OpenRocket 14.06 (2014-06-25)

New Features

Bug Fixes

OpenRocket 14.05 (2014-05-21)

New Features

Bug Fixes

OpenRocket 14.03 (2014-03-20)

New Features

Bug Fixes

OpenRocket 13.11.2 (2014-01-01)

Bug Fixes

OpenRocket 13.11.1 (2013-11-15)

Bug Fixes

OpenRocket 13.11 (2013-11-08)

New Features

Bug Fixes

OpenRocket 13.09.1 (2013-10-05)

This release contains a number of bug fixes, updated 3D JOGL libraries. Added preliminary thrustcurves for Aerotech C3 and D2 18mm reloads.

OpenRocket 13.09 (2013-09-08)

This release contains a number of bug fixes, updated 3D JOGL libraries, and separates simulation edit and plot dialogs.

OpenRocket 13.05 (2013-05-04)

New Features

OpenRocket 12.09.1 (2012-06-28)

Bug-fix release for 12.09, fixing numerous bugs. Only new feature is the possiblity to automatically open the latest design file on startup (in Edit -> Preferences -> Options).

OpenRocket 12.09 (2012-09-16)

Numerous new features by many contributors

OpenRocket 12.03 (2012-03-17)

In this release the version numbering scheme has been changed to be “YY.MM” indicating the year and month of the release.

Enhancements in the desktop version include saving designs in RKT format thanks to Doug Pedrick, freeform fin set import from images by Jason Blood, configurable stage separation events, guided help tours and displaying the computed motor designation class. The application has also been translated to Italian by Mauro Biasutti and Russian by the Sky Dart Team.

This also marks the first release for Android devices. In this first release you can open files and examine existing simulations, stability data and motor files. The Android port is thanks to work by Kevin Ruland.

OpenRocket 1.1.9 (2011-11-24)

This release calculates rocket flight in real-world coordinates and takes into account geodetic effects (including coriolis effect) thanks to work by Richard Graham. Printing of transitions, nose cone profiles and fin marking guides is available thanks to Doug Pedrick. It also contains some usability features and bug fixes.

OpenRocket 1.1.8 (2011-08-25)

This release contains bug fixes to the optimization methods. It also contains a workaround to a JRE bug that prevents running OpenRocket on Java 7.

OpenRocket 1.1.7 (2011-08-12)

This release contains automatic rocket design optimization functionality. However, be cautious when using it and take the results with a grain of salt.

OpenRocket 1.1.6 (2011-07-22)

Internationalization support thanks to work by Boris du Reau and translations by Tripoli Spain, Tripoli France and Stefan Lobas (ERIG e.V.). The release also contains rocket design scaling support and numerous bug fixes.

OpenRocket 1.1.5 (2011-06-10)

Removed native printing support. Printing is now handled via PDF viewer, which should make printing much more reliable and less bug-prone.

OpenRocket 1.1.4 (2011-03-05)

Initial printing support by Doug Pedrick, and various bug fixes.

OpenRocket 1.1.3 (2010-10-06)

Support for drag-drop moving and copying of components. Fixes a severe bug in the undo system.

OpenRocket 1.1.2 (2010-09-07)

Fixes a severe bug that prevented adding stages to rockets.

OpenRocket 1.1.1 (2010-09-03)

Major rewrite of the simulation code, enhanced support for thrust curve loading and selection, faster startup time and bug fixes.

Old simulation listeners are incompatible with this release.

OpenRocket 1.1.0 (2010-03-21)

Support for loading RockSim rocket design files (.rkt) thanks to Doug Pedrick.

OpenRocket 1.0.0 (2010-03-10)

Added numerous new motor thrustcurves from, and fixed a few more bugs.

OpenRocket 0.9.6 (2010-02-17)

Updated aerodynamic calculation methods to be more in line with the Barrowman method and enhanced simulation time step selection. Fixed numerous bugs.

OpenRocket 0.9.5 (2009-11-28)

Fixed a serious defect which prevented adding a tube coupler and centering ring on the same body tube. Other minor improvements.

OpenRocket 0.9.4 (2009-11-24)

Added through-the-wall fin tabs, attaching components to tube couplers, material editing and automatic update checks, and fixed numerous of the most commonly occurring bugs.

OpenRocket 0.9.3 (2009-09-01)

Numerous bug fixes and enhancements including data exporting, showing flight events in plots, example rocket designs, splitting clustered inner tubes and automated bug reporting.

OpenRocket 0.9.2 (2009-07-13)

Fixed imperial unit conversions. Significant UI enhancements to the motor configuration edit dialog, motor selection dialog and file open/save.

OpenRocket 0.9.1 (2009-06-09)

Bug fixes to file dialog and saving; initial support for cut/copy/paste of simulations.

OpenRocket 0.9.0 (2009-05-24)

Initial release.