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44 <h1>OpenRocket — an Open Source model rocket simulator</h1>
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49 <a class="main" href="https://sourceforge.net/projects/openrocket/files/openrocket/1.1.5/OpenRocket-1.1.5.jar/download">
50 <strong>Download now!</strong>
51 <span>OpenRocket-1.1.5.jar</span>
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54 <a href="https://sourceforge.net/projects/openrocket/files/openrocket/1.1.5/ReleaseNotes/view">Release notes</a> |
55 <a href="download.html">Other versions</a>
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68 <p><strong>OpenRocket</strong> is an free, fully featured model
69 rocket simulator that allows you to design and simulate your
70 rockets before actually building and flying them.</p>
71 <p>OpenRocket features a full six-degree-of-freedom simulation,
72 realistic wind modeling, a multitude of different components
73 including free-form fins and canted fins, clustering and
74 staging. Read more about its <a href="features.html">features
75 and see screenshots</a>.
77 <p>OpenRocket is an Open Source project licensed under the
78 <a href="license.html">GNU GPL</a>. This means that the
79 software is free to use for whatever purposes, and the source
80 code is also available for studying and extending.
82 <p>OpenRocket needs help to become even better. Implementing
83 features, writing documentation and creating example designs are
84 just a few ways of helping. If you are interested in helping
85 make OpenRocket the best rocket simulator out there, please
86 <a href="getinvolved.html"><em>Get involved!</em></a>
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91 <p><span class="date">10.6.2011:</span> Version 1.1.5 is
92 <a href="download.html">released</a>!</p>
93 <p>This release includes updates to the printing system which fixes
94 printing on Windows.</p>
95 <p><span class="date">5.3.2011:</span> Version 1.1.4 is
96 <a href="download.html">released</a>!</p>
97 <p>This release includes initial printing support, thanks to Doug
98 Pedrick. Printing still has a few issues on some platforms.
99 Various bugs have also been fixed.</p>
100 <p><span class="date">6.10.2010:</span> Version 1.1.3 is
101 <a href="download.html">released</a>!</p>
102 <p>This release includes support for moving and copying components
103 in the component tree using drag-and-drop. Use normal DnD for
104 moving, and control-drag for copy. This release also fixes a
105 severe bug in the undo system.</p>
106 <p><span class="date">7.9.2010:</span> A bug-fix version 1.1.2 is
107 <a href="download.html">released</a>!</p>
108 <p>This release fixes a severe bug in 1.1.1 that prevented adding stages
109 to rocket designs. Users are recommended to upgrade.</p>
110 <p><span class="date">3.9.2010:</span> Version 1.1.1 is
111 <a href="download.html">released</a>!</p>
112 <p>For this release a major part of the simulator code has been
113 rewritten for better flexibility in future development. It also
114 includes a vastly improved thrust curve selection dialog, the
115 possibility to loading user-defined thrust curves and better
116 startup times than previous releases.</p>
117 <p>Simulation listeners written for older versions of OpenRocket
118 are not compatible with this release.</p>
119 <p><span class="date">21.3.2010:</span> Version 1.1.0 is
120 <a href="download.html">released</a>!</p>
121 <p>This release includes the first support for loading RockSim
122 rocket design files (.RKT), thanks to contributions by Doug
123 Pedrick. It's also the kick-off of the 1.1 development branch of
125 <p><span class="date">10.3.2010:</span> Version 1.0.0 is
126 <a href="download.html">released</a>!</p>
127 <p>This release includes several hundred new thrustcurves from
128 <a href="http://www.thrustcurve.org/">thrustcurve.org</a> and some
129 bug fixes. It is also a stable milestone, after which development
130 on larger features will be started in a 1.1 branch. Look out
132 <p><span class="date">17.2.2010:</span> Version 0.9.6 is
133 <a href="download.html">released</a>!</p>
134 <p>This release updates the aerodynamic calculation methods to be
135 more in line with the Barrowman method and enhances the simulation
136 time step selection, in addition to fixing numerous bugs.</p>
137 <p><span class="date">28.11.2009:</span> Version 0.9.5 is
138 <a href="download.html">released</a>!</p>
139 <p>This release <strong>fixes a serious bug in 0.9.4</strong> that
140 prevented adding a tube coupler and centering ring to the same
141 body tube, in addition to a few smaller additions. Users of
142 0.9.4 should upgrade immediately!</p>
143 <p><span class="date">24.11.2009:</span> Version 0.9.4 is
144 <a href="download.html">released</a>!</p>
145 <p>This version adds support for through-the-wall fin tabs,
146 attaching components to coupler tubes, material editing, automatic
147 update checking, in addition to fixing numerous bugs.</p>
148 <p><span class="date">1.9.2009:</span> Version 0.9.3 is
149 <a href="download.html">released</a>!</p>
150 <p>This version includes lots of bug fixes and new features including
151 data exporting, showing flight events in plots, example rocket designs,
152 splitting clustered inner tubes and automated bug reporting.</p>
153 <p><span class="date">13.7.2009:</span> Version 0.9.2 is
154 <a href="download.html">released</a>!</p>
155 <p>This version includes <strong>bug fixes for imperial unit
156 conversions</strong> and UI improvements for motor selection.
157 <em>All users of imperial units should upgrade!</em></p>
158 <p><span class="date">9.6.2009:</span> The
159 <a href="documentation.html">Master's thesis</a> for which OpenRocket
160 was written for is now available!</p>
161 <p>At the same time version 0.9.1 was
162 <a href="download.html">released</a>. This release fixes various
163 file handling bugs and adds small UI enhancements.</p>
164 <p><span class="date">24.5.2009:</span> First version 0.9.0
165 <a href="download.html">released</a>!</p>
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