What is a drone ?
An unmanned aerial vehicle (UAV) commonly known as a drone is an aircraft without a human pilot on board and a type of unmanned vehicle. Drones are a component of an unmanned aircraft system (UAS); which include a UAV, a ground-based controller, and a system of communications between the two.
The flight of drones may operate with various degrees of autonomy: either under remote control by a human operator or autonomously by onboard computers.
Drones were originally used for missions too and usually kids also use them a lot .While they originate in military applications also, their use is rapidly expanding to commercial, scientific, recreational, agricultural, and other applications, such as policing and surveillance, product deliveries, aerial photography, and drone racing.