A drone is an unmanned aircraft such as :
They are more formally known as unmanned aerial vehicles ( UAV). So, there are essentially flying robots.
This aircraft enables to fly autonomously through software-controlled flight plans in their embedded systems working in conjunction with GPS.
We can see, nowadays, very huge applications for this vehicles:
- Traffic monitoring
But the listing is still very long.
I have found a very interesting role for drone. In fact, In Mexico they use drones to protect sea turtle nest :