From Aerospace Daily & Defense Report; ~ 06/11/2004
"Jointly managed by DARPA and the Army, the $500 million UCAR program is attempting to develop a highly autonomous unmanned combat helicopter ......
Teams led by Northrop Grumman and Lockheed Martin are competing in Phase II of the UCAR effort, working on preliminary designs for their respective systems. Northrop Grumman's UCAR is a tailless concept featuring twin intermeshing rotors to overcome torque, while Lockheed Martin is offering a compound helicopter featuring small wings and an auxiliary propulsion system."
DARPA was scheduled to choose in September a single team to move into Phase III and build two flying demonstrator aircraft.
It is reported that the Northrop Grumman's entrant utilizes servo-flaps. These flaps will work slightly differently from those of the Kaman helicopters. Sikorsky is involved in this project and Nick L. may be able to provide additional information.
Dave J.
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Edit
Opps! Forget the above.
From Aerospace Daily & Defense Report ~ 12/27/2004
DARPA Cancels Third Phase Of UCAR Program