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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-1.1.8.jar</span>
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57 <a href="https://sourceforge.net/projects/openrocket/files/openrocket/1.1.8/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">25.8.2011:</span> Version 1.1.8 is
100 <a href="download.html">released</a>!</p>
101 <p>This release contains bug fixes to the optimization methods.
102 It also contains a workaround to a JRE bug that prevents running
103 OpenRocket on some builds of Java 7.</p>
104 <p>The web pages have also been somewhat updated and Boris du Reau has
105 created <a href="http://openrocket.trans.free.fr/">a separate site</a>
106 for coordinating the localization efforts for OpenRocket.</p>
107 <p><span class="date">12.8.2011:</span> Version 1.1.7 is
108 <a href="download.html">released</a>!</p>
109 <p>This release includes automatic rocket design optimization
110 support (<em>Analyze</em> → <em>Rocket optimization</em>).
111 You can optimize any amount of rocket parameters for apogee
112 altitude, maximum velocity or a number of different values.</p>
113 <p>While the automatic optimization is a powerful tool, it is very
114 easy to optimize against particulars of the simulation methods,
115 instead of true physical phenomena. Always keep common sense at
116 hand and take the results with a grain of salt.</p>
117 <p><span class="date">22.7.2011:</span> Version 1.1.6 is
118 <a href="download.html">released</a>!</p>
119 <p>This release includes initial localization support and
120 translations to French, German and Spanish. This is thanks to the
121 great work of Boris du Reau, and the teams from Tripoli France,
122 Tripoli Spain and ERIG e.V. If you prefer to use some other
123 language than the system default, you can select the language on
124 the "Options" tab of the preferences dialog.</p>
125 <p>The release also includes design scaling support and numerous bug
127 <p><span class="date">10.6.2011:</span> Version 1.1.5 is
128 <a href="download.html">released</a>!</p>
129 <p>This release includes updates to the printing system which fixes
130 printing on Windows.</p>
131 <p><span class="date">5.3.2011:</span> Version 1.1.4 is
132 <a href="download.html">released</a>!</p>
133 <p>This release includes initial printing support, thanks to Doug
134 Pedrick. Printing still has a few issues on some platforms.
135 Various bugs have also been fixed.</p>
136 <p><span class="date">6.10.2010:</span> Version 1.1.3 is
137 <a href="download.html">released</a>!</p>
138 <p>This release includes support for moving and copying components
139 in the component tree using drag-and-drop. Use normal DnD for
140 moving, and control-drag for copy. This release also fixes a
141 severe bug in the undo system.</p>
142 <p><span class="date">7.9.2010:</span> A bug-fix version 1.1.2 is
143 <a href="download.html">released</a>!</p>
144 <p>This release fixes a severe bug in 1.1.1 that prevented adding stages
145 to rocket designs. Users are recommended to upgrade.</p>
146 <p><span class="date">3.9.2010:</span> Version 1.1.1 is
147 <a href="download.html">released</a>!</p>
148 <p>For this release a major part of the simulator code has been
149 rewritten for better flexibility in future development. It also
150 includes a vastly improved thrust curve selection dialog, the
151 possibility to loading user-defined thrust curves and better
152 startup times than previous releases.</p>
153 <p>Simulation listeners written for older versions of OpenRocket
154 are not compatible with this release.</p>
155 <p><span class="date">21.3.2010:</span> Version 1.1.0 is
156 <a href="download.html">released</a>!</p>
157 <p>This release includes the first support for loading RockSim
158 rocket design files (.RKT), thanks to contributions by Doug
159 Pedrick. It's also the kick-off of the 1.1 development branch of
161 <p><span class="date">10.3.2010:</span> Version 1.0.0 is
162 <a href="download.html">released</a>!</p>
163 <p>This release includes several hundred new thrustcurves from
164 <a href="http://www.thrustcurve.org/">thrustcurve.org</a> and some
165 bug fixes. It is also a stable milestone, after which development
166 on larger features will be started in a 1.1 branch. Look out
168 <p><span class="date">17.2.2010:</span> Version 0.9.6 is
169 <a href="download.html">released</a>!</p>
170 <p>This release updates the aerodynamic calculation methods to be
171 more in line with the Barrowman method and enhances the simulation
172 time step selection, in addition to fixing numerous bugs.</p>
173 <p><span class="date">28.11.2009:</span> Version 0.9.5 is
174 <a href="download.html">released</a>!</p>
175 <p>This release <strong>fixes a serious bug in 0.9.4</strong> that
176 prevented adding a tube coupler and centering ring to the same
177 body tube, in addition to a few smaller additions. Users of
178 0.9.4 should upgrade immediately!</p>
179 <p><span class="date">24.11.2009:</span> Version 0.9.4 is
180 <a href="download.html">released</a>!</p>
181 <p>This version adds support for through-the-wall fin tabs,
182 attaching components to coupler tubes, material editing, automatic
183 update checking, in addition to fixing numerous bugs.</p>
184 <p><span class="date">1.9.2009:</span> Version 0.9.3 is
185 <a href="download.html">released</a>!</p>
186 <p>This version includes lots of bug fixes and new features including
187 data exporting, showing flight events in plots, example rocket designs,
188 splitting clustered inner tubes and automated bug reporting.</p>
189 <p><span class="date">13.7.2009:</span> Version 0.9.2 is
190 <a href="download.html">released</a>!</p>
191 <p>This version includes <strong>bug fixes for imperial unit
192 conversions</strong> and UI improvements for motor selection.
193 <em>All users of imperial units should upgrade!</em></p>
194 <p><span class="date">9.6.2009:</span> The
195 <a href="documentation.html">Master's thesis</a> for which OpenRocket
196 was written for is now available!</p>
197 <p>At the same time version 0.9.1 was
198 <a href="download.html">released</a>. This release fixes various
199 file handling bugs and adds small UI enhancements.</p>
200 <p><span class="date">24.5.2009:</span> First version 0.9.0
201 <a href="download.html">released</a>!</p>
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