's J-UCAS program, and is now part of the United States Navy 's UCAS-D (Unmanned Combat Air System Demonstration) program, which aims to create a carrier -based unmanned aircraft. Unlike the similar Boeing X-45 , the development of the aircraft's predecessor, the X-47A Pegasus , was company-funded. http://en.wikipedia....p_Grumman_X-47B General Atomics Avenger