A VTOL Unmanned Aircraft
That stands for "vertical take off and landing", n... ...prey in the U.S. military inventory. As the U.S. Air Force is moving toward a greater role for unmanned aircraft , the Excalibur could have a production future:... ...aviation-amp-space/article/2009-07/unmanned-hov...
https://www.neatorama.com/2009/07/23/a-vtol-unmanned-aircraft/
