JoePfeiffer 87c26cccf4 Modified unit test expected results to match corrected fin MOI.
testAlphaIIIStructure
    Three fins in finset, so Ixx and Iyy are reduced by a factor of 3
    Ixx reduced from 5.2771946530250825E-5 to 1.7590648843416942E-5
    Iyy reduced from 1.3580770106050167E-4 to 4.526923368683389E-5

    Total rocket MOI changed to Ir=1.8763734635622462E-5 and
    It=2.1238394331365588E-4

testFalcon9HComponentMOI
    Three fins in finset, so
    finset rotational MOI  changed from 0.00413298 to 0.001377661595723823
    finset longitudinal MOI changed from 0.01215133 to 0.004050443797127646

testFalcon9HeavyBoosterLaunchMOIs
    Two finsets, each three fins.  Each finset's MOI are reduced as in
    testFalcon9HComponentMOI, resulting in change to totals
    Ir=0.013480523485489424, It=0.07017476021288252

testFalcon9HeavyBoosterSpentMOIs
    Two finsets, each three fins, as above
    Ir=0.010420016485489425, It=0.06398514917026163

testFalcon9HeavyBoosterStageMassOverride
    Two finsets, each three fins, as above
    Ir=0.007100144485489424, It=16.030625168315694

testFalcon9HeavyComponentCMxOverride
    Two finsets, each three fins, as above
    Ir=0.007100144485489424, It=0.047289449862727435

testFalcon9HeavyComponentMassOverride
    Two finsets, each three fins, as above
    Ir=0.026027963480146098, It=0.35928666329363634
2020-06-29 15:02:34 -06:00
2020-06-13 14:43:14 -07:00
2020-04-24 20:01:53 -07:00
2020-06-01 08:49:08 +09:00

OpenRocket

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Overview

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.

Installers

OpenRocket maintains an installer for installing the software and Java runtime. You can find the installer for Windows at the link below. Installers for macOS and Linux are coming and will be added to this page when ready.

OpenRocket 15.03 Installer (Windows)

Release Notes

Release notes for all releases of OpenRocket are available at the following link.

OpenRocket Release Notes

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
Description
Model-rocketry aerodynamics and trajectory simulation software
Readme 388 MiB
Languages
Java 80.3%
Csound 13.9%
Racket 4.6%
Cython 1.1%