Here is a drone with a telescopic leg that can hop and fly. It can transition from aerial and terrestrial locomotion modes. The Hopcopter has a springy leg and can follow a prescribed trajectory in a continuous mode. When hopping, the robot achieves improved power efficiency. The below video shows it in action:
As the researchers explain, the robot can hop for 05 minutes. It can use the even use the ground to decelerate and turn during forward flight.