The US Navy developed the X-47B UCAS drone as part of the unmanned ᴄᴏᴍʙᴀᴛ air system carrier demonstration (UCAS-D) program. The program’s goal is to build and show which fighter-sized unmanned ᴀɪʀᴄʀᴀғt can be launched from US Navy ᴀɪʀᴄʀᴀғ carriers. Following the cancellation, development of the X-47B ᴄᴏᴍʙᴀᴛ drone, which had begun in June 2005, was temporarily paused.
The X-47B is an unmanned ᴄᴏᴍʙᴀᴛ air system carrier. UCAS being developed by Northrop Grumman for the US Navy usn the strike fighter. The sized unmanned ᴀɪʀᴄʀᴀғ is currently in its demonstration phase.
The unmanned ᴀɪʀᴄʀᴀғ was first developed as part of the X-47 program airworthiness of the X-47B unmanned ᴄᴏᴍʙᴀᴛ air system demonstrator was developed at an estimated cost of 813 million.