http://www.designfax.net/enews/20101102/feature-4.asp

An unmanned aerial vehicle (UAV) called DEMON is designed to fly with no
conventional elevators or ailerons, getting its pitch and roll control from
technologies that rely on blown air and (hopefully) making it a lot easier to
maintain and repair.

The 200-lb, jet-powered DEMON craft made a historic, “flapless” flight from an
airfield at Walney Island in Cumbria, U.K., on Friday, September 17, 2010.
Developed by Cranfield University, BAE Systems, and nine other U.K.
universities. The blended-wing DEMON is designed to be able to forgo the use of
conventional mechanical elevators and ailerons that usually control the movement
of an aircraft in favor of novel aerodynamic control devices using blown jets of
air. The plane has an 8-ft wingspan and sports flight speeds of 70 to 150 knots.
DEMON can fly parts of its mission by itself but is not fully autonomous at this
stage of development.

The project aims to show that this approach offers several advantages over
“moving flap” technology (which has been used since the early days of aviation)
because it requires fewer moving parts, less maintenance, and a more stealthy
profile for the aircraft. DEMON's trial flights were the first “flapless
flights” ever to be authorized by the U.K. Civil Aviation Authority. As well as
the successful demonstration of flapless flight technology, the project also
aims to showcase new methods of UAV construction, new control systems, and more
advanced integration of technologies.

Thanks to Dutcher.