I think that it is a test vehicle for the
Hope space plane. Similar in some ways to the European Phoenix test vehicle I think the vehicle you linking to is a subscale low speed atmospheric test vehicle designed to test autonomous landing capabilities. I think that the vehicle was called
alfex for Automatic Landing Flight EXperiment.<br /><br />Here are some more
pictures.<br /> <br />Edit: After a little more looking I think the craft linked to is actually the succession of AFLEX called the
HSFD for High Speed Flight Demonstration. <br /><br />
Pictures<br /><br />Cool find <img src="/images/icons/smile.gif" />