World's biggest drones – in pictures

American sailors move a US Navy X-47B unmanned combat air system demonstrator on to an elevator aboard the aircraft carrier ‘USS George H.W. Bush’ in the Atlantic Ocean. The ship was the first to successfully catapult-launch an unmanned aircraft from its flight deck. Photo: US Navy
American sailors move a US Navy X-47B unmanned combat air system demonstrator on to an elevator aboard the aircraft carrier ‘USS George H.W. Bush’ in the Atlantic Ocean. The ship was the first to successfully catapult-launch an unmanned aircraft from its flight deck. Photo: US Navy
An RQ-4 Global Hawk unmanned aircraft like the one shown is currently flying non-military mapping missions over South America, Central America and the Caribbean at the request of partner nations in the region. Photo: US Air Force / Bobbi Zapka
An RQ-4 Global Hawk unmanned aircraft like the one shown is currently flying non-military mapping missions over South America, Central America and the Caribbean at the request of partner nations in the region. Photo: US Air Force / Bobbi Zapka
A still image, taken from a video footage released by Russia's Defence Ministry, shows a Russian Altius-U military long-range unmanned aerial vehicle during a test flight at an unknown location. Photo: Ministry of Defence of the Russian Federation / Handout via Reuters
A still image, taken from a video footage released by Russia's Defence Ministry, shows a Russian Altius-U military long-range unmanned aerial vehicle during a test flight at an unknown location. Photo: Ministry of Defence of the Russian Federation / Handout via Reuters
The first joint flight of a Sukhoi S-70 Okhotnik heavy unmanned combat aerial vehicle and a Sukhoi Su-57 jet fighter. As part of a testing programme, Okhotnik has performed a fully unmanned flight into an airborne alert area. Photo: Russian Defence Ministry / Tass
The first joint flight of a Sukhoi S-70 Okhotnik heavy unmanned combat aerial vehicle and a Sukhoi Su-57 jet fighter. As part of a testing programme, Okhotnik has performed a fully unmanned flight into an airborne alert area. Photo: Russian Defence Ministry / Tass
A screengrab of an S-70 unmanned combat air vehicle.
A screengrab of an S-70 unmanned combat air vehicle.
The Lockheed Martin SR-72, sometimes called Son of Blackbird, is a US hypersonic UAV drone intended for intelligence, surveillance and reconnaissance. Photo: Lockheed Martin
The Lockheed Martin SR-72, sometimes called Son of Blackbird, is a US hypersonic UAV drone intended for intelligence, surveillance and reconnaissance. Photo: Lockheed Martin
A team of 12th Aircraft Maintenance Unit Airmen walk beside an RQ-4 Global Hawk drone. EPA
A team of 12th Aircraft Maintenance Unit Airmen walk beside an RQ-4 Global Hawk drone. EPA
An X-47B pilot-less drone is launched for the first time off an aircraft carrier, the USS George H. W. Bush, in the Atlantic Ocean off the coast of Virginia.
An X-47B pilot-less drone is launched for the first time off an aircraft carrier, the USS George H. W. Bush, in the Atlantic Ocean off the coast of Virginia.