QUaRTM: A Quadcopter with Unactuated Rotor Tilting Mechanism Capable of Faster, More Agile, and More Efficient Flight

 

Docking two multirotors in midair using relative vision measurements

 

Staging energy sources to extend flight time of a multirotor UAV

 

Flying batteries: In-flight battery switching to increase multirotor flight time

 

Tethered Power Supply for Quadcopters: Architecture, Analysis and Experiments