Meet the Voliro Hexacopter: an omnidirectional drone that can hover in any orientation and perform tasks regular drones may not be able to. It was developed and programmed as a student project at ETH Zurich. 6 tilting motors were used to allow the rotor units to turn around the axes, allowing decoupling of the position and orientation of the hexacopter.
Voliro can drive on a wall or fly vertically to perform challenging inspection tasks. The above video shows it in action.