Quadcopters are getting smarter every year. While they still crash, many companies are working to improve them in this area. Failsafe from Verity is a control algorithm that can be applied to any drone to enable quadcopters to continue flying after propulsion system failure. As the company explains:
When a Failsafe drone has a propulsion system failure, instead of spinning out of control and crashing to the ground, the drone stays in the air using sophisticated algorithms to stabilize itself and can be safely navigated to a secure landing location.Failsafe works indoors and outdoors, on autonomous as well as remote controlled drones.