In the event of a natural disaster that disrupts phone and Internet systems over a wide area, autonomous aircraft could potentially hover over affected regions, carrying communications payloads that provide temporary telecommunications coverage to those in need.
However, such unpiloted aerial vehicles, or UAVs, are often expensive to operate and can only remain in the air for a day or two – as is the case with most autonomous surveillance aircraft operated by the U.S. Air Force. Providing adequate and persistent coverage would require a relay of multiple aircraft, landing and refueling around the clock, with operational costs of thousands of dollars per hour per vehicle …
https://unmanned-aerial.com/engineers-design-drones-can-stay-aloft-five-days
Unmanned Aerial | June 21, 2017
