Unmanned Combat Air System Demonstrator program
The United States Navy Unmanned Combat Air System Demonstrator (UCAS-D) program consists of
The UCAS-D program was to demonstrate the feasibility of operating an unmanned vehicle on an aircraft carrier. Technology and operational procedures gained from the program and X-47B demonstrator were used to develop an operational unmanned carrier aircraft through the Unmanned Carrier-Launched Surveillance and Strike (UCLASS) program. After debate over whether the UCLASS should primarily focus on stealthy bombing or scouting, the Pentagon instead changed the entire program into the Carrier-Based Aerial-Refueling System (CBARS) program. This new program intended to create an UAV for aerial refueling duties to extend the range of manned fighters.
This new project lead to the development of the aerial refueling drone, the Boeing MQ-25 Stingray.