The DARPA Vertical Take-Off/Landing X-plane (VTOL x-plane) Program achieved a critical milestone as Aurora Flight Sciences' subscale vehicle demonstrator successfully flew at a U.S. military facility.
The flight of the subscale aircraft met an important DARPA risk reduction requirement, focusing on validation of the aerodynamic design and flight control system
http://www.aurora.aero/wp-content/uploa ... Flight.pdf[youtube]http://www.youtube.com/watch?v=F4jWzANJufc[/youtube]