October 19th 2008 the XLR-2 was fired to evaluate the engine for the HATV (Hybrid Atmospheric Test Vehicle) rocket. It was a success and the prerequisite for a man-rated HEAT (Hybrid Exo Atmospheric Transporter).
<a href="//commons.wikimedia.org/wiki/User:Necessary_Evil" title="User:Necessary Evil">Necessary Evil</a>
2010-02-13
<span class="int-own-work" lang="en">Own work</span>