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47 <h1>OpenRocket — an Open Source model rocket simulator</h1>
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53 <strong>Download now!</strong>
54 <span>OpenRocket-1.1.7.jar</span>
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57 <a href="https://sourceforge.net/projects/openrocket/files/openrocket/1.1.7/ReleaseNotes/view">Release notes</a> |
58 <a href="download.html">Other versions</a>
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71 <p><strong>OpenRocket</strong> is an free, fully featured model
72 rocket simulator that allows you to design and simulate your
73 rockets before actually building and flying them.</p>
74 <p>The main features include:</p>
76 <li>Six-degree-of-freedom flight simulation</li>
77 <li>Automatic design optimization</li>
78 <li>Realtime simulated altitude, velocity and acceleration display</li>
79 <li>Staging and clustering support</li>
80 <li>Cross-platform (Java-based)</li>
82 <p>Read more about its <a
83 href="features.html">features and see screenshots</a>.
85 <p>OpenRocket is an Open Source project licensed under the
86 <a href="license.html">GNU GPL</a>. This means that the
87 software is free to use for whatever purposes, and the source
88 code is also available for studying and extending.
90 <p>OpenRocket needs help to become even better. Implementing
91 features, writing documentation and creating example designs are
92 just a few ways of helping. If you are interested in helping
93 make OpenRocket the best rocket simulator out there, please
94 <a href="getinvolved.html"><em>Get involved!</em></a>
96 <div class="clear"></div>
99 <p><span class="date">22.7.2011:</span> Version 1.1.7 is
100 <a href="download.html">released</a>!</p>
101 <p>This release includes automatic rocket design optimization
102 support (<em>Analyze</em> → <em>Rocket optimization</em>).
103 You can optimize any amount of rocket parameters for apogee
104 altitude, maximum velocity or a number of different values.</p>
105 <p>While the automatic optimization is a powerful tool, it is very
106 easy to optimize against particulars of the simulation methods,
107 instead of true physical phenomena. Always keep common sense at
108 hand and take the results with a grain of salt.</p>
109 <p><span class="date">22.7.2011:</span> Version 1.1.6 is
110 <a href="download.html">released</a>!</p>
111 <p>This release includes initial localization support and
112 translations to French, German and Spanish. This is thanks to the
113 great work of Boris du Reau, and the teams from Tripoli France,
114 Tripoli Spain and ERIG e.V. If you prefer to use some other
115 language than the system default, you can select the language on
116 the "Options" tab of the preferences dialog.</p>
117 <p>The release also includes design scaling support and numerous bug
119 <p><span class="date">10.6.2011:</span> Version 1.1.5 is
120 <a href="download.html">released</a>!</p>
121 <p>This release includes updates to the printing system which fixes
122 printing on Windows.</p>
123 <p><span class="date">5.3.2011:</span> Version 1.1.4 is
124 <a href="download.html">released</a>!</p>
125 <p>This release includes initial printing support, thanks to Doug
126 Pedrick. Printing still has a few issues on some platforms.
127 Various bugs have also been fixed.</p>
128 <p><span class="date">6.10.2010:</span> Version 1.1.3 is
129 <a href="download.html">released</a>!</p>
130 <p>This release includes support for moving and copying components
131 in the component tree using drag-and-drop. Use normal DnD for
132 moving, and control-drag for copy. This release also fixes a
133 severe bug in the undo system.</p>
134 <p><span class="date">7.9.2010:</span> A bug-fix version 1.1.2 is
135 <a href="download.html">released</a>!</p>
136 <p>This release fixes a severe bug in 1.1.1 that prevented adding stages
137 to rocket designs. Users are recommended to upgrade.</p>
138 <p><span class="date">3.9.2010:</span> Version 1.1.1 is
139 <a href="download.html">released</a>!</p>
140 <p>For this release a major part of the simulator code has been
141 rewritten for better flexibility in future development. It also
142 includes a vastly improved thrust curve selection dialog, the
143 possibility to loading user-defined thrust curves and better
144 startup times than previous releases.</p>
145 <p>Simulation listeners written for older versions of OpenRocket
146 are not compatible with this release.</p>
147 <p><span class="date">21.3.2010:</span> Version 1.1.0 is
148 <a href="download.html">released</a>!</p>
149 <p>This release includes the first support for loading RockSim
150 rocket design files (.RKT), thanks to contributions by Doug
151 Pedrick. It's also the kick-off of the 1.1 development branch of
153 <p><span class="date">10.3.2010:</span> Version 1.0.0 is
154 <a href="download.html">released</a>!</p>
155 <p>This release includes several hundred new thrustcurves from
156 <a href="http://www.thrustcurve.org/">thrustcurve.org</a> and some
157 bug fixes. It is also a stable milestone, after which development
158 on larger features will be started in a 1.1 branch. Look out
160 <p><span class="date">17.2.2010:</span> Version 0.9.6 is
161 <a href="download.html">released</a>!</p>
162 <p>This release updates the aerodynamic calculation methods to be
163 more in line with the Barrowman method and enhances the simulation
164 time step selection, in addition to fixing numerous bugs.</p>
165 <p><span class="date">28.11.2009:</span> Version 0.9.5 is
166 <a href="download.html">released</a>!</p>
167 <p>This release <strong>fixes a serious bug in 0.9.4</strong> that
168 prevented adding a tube coupler and centering ring to the same
169 body tube, in addition to a few smaller additions. Users of
170 0.9.4 should upgrade immediately!</p>
171 <p><span class="date">24.11.2009:</span> Version 0.9.4 is
172 <a href="download.html">released</a>!</p>
173 <p>This version adds support for through-the-wall fin tabs,
174 attaching components to coupler tubes, material editing, automatic
175 update checking, in addition to fixing numerous bugs.</p>
176 <p><span class="date">1.9.2009:</span> Version 0.9.3 is
177 <a href="download.html">released</a>!</p>
178 <p>This version includes lots of bug fixes and new features including
179 data exporting, showing flight events in plots, example rocket designs,
180 splitting clustered inner tubes and automated bug reporting.</p>
181 <p><span class="date">13.7.2009:</span> Version 0.9.2 is
182 <a href="download.html">released</a>!</p>
183 <p>This version includes <strong>bug fixes for imperial unit
184 conversions</strong> and UI improvements for motor selection.
185 <em>All users of imperial units should upgrade!</em></p>
186 <p><span class="date">9.6.2009:</span> The
187 <a href="documentation.html">Master's thesis</a> for which OpenRocket
188 was written for is now available!</p>
189 <p>At the same time version 0.9.1 was
190 <a href="download.html">released</a>. This release fixes various
191 file handling bugs and adds small UI enhancements.</p>
192 <p><span class="date">24.5.2009:</span> First version 0.9.0
193 <a href="download.html">released</a>!</p>
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