Larger unmanned aerial vehicles are used for strategic reconnaissance. The most important of these is the US, S. RQ-4 Global Hawk, a 44-foot (13 meter) long jet powered ship with a wingspan of 116 feet (35 meters). An unmanned aerial vehicle (UAV), commonly known as a drone, is an aircraft without any human pilot, crew, or passengers on board.
Unmanned aerial vehicles are a component of an unmanned aircraft system (UAS), which includes the addition of a ground controller and a communications system with the UAV. The flight of unmanned aerial vehicles can operate under the remote control of a human operator, such as remotely piloted aircraft (RPA), or with varying degrees of autonomy, such as autopilot assistance, to fully autonomous aircraft that have no provision for human intervention. Unmanned aerial vehicles are used in numerous real-life applications, such as payload delivery, traffic monitoring, moving objects in seemingly hazardous environments, and surveillance. Unmanned aerial vehicles (UAVs) are increasingly being used in a wide range of real-world applications, such as military operations, disaster relief and the exploration of hazardous remote areas.
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