Читать книгу Unmanned Aerial Vehicles for Internet of Things (IoT) - Группа авторов - Страница 23

UAVs have a much wider variety of sizes and vary according to the need. The largest one is being used for military purposes such as the MQ-4 Triton, built by Northrop Grumman, Raytheon and L3 Comm, the MQ-4 is 47.6 feet long with a wingspan of 130.9 feet, giving it a span wider than a Boeing 737 airliner. The next in size is unmanned aircraft, which have fixed wings and require short runways or sometimes catapult. These are generally used to cover a larger area of land, for geographical mapping, surveying, or to combat wildlife poaching and numerous other examples. These are mainly used for commercial or civil purposes. VTOL drones on the other hand have the endurance of fixed-wing type and vertical take-off quality like quadcopter which makes it more suitable for a job where there is not much space for landing e.g., in hilly areas.