Treehugger: Flying bot wraps its wings around trees to perch
A research team from the Laboratory of Intelligent Systems at EPFL, Switzerland, have introduced an unmanned aerial vehicle (UAV) that can perch on vertical poles using a passive wing morphing technique.
VIDEO: Helium balloon drones
Germany-based H-Aero have developed bi-propeller helium balloon drones for long duration, energy efficient flight, with the largest model boasting a 3 kg sensor payload and 5 hr flight time.