Quadcopters are great for maneuverability and slow, stable flight, but it comes at the cost of efficiency. [Peter Ryseck]’s Mini QBIT quadrotor biplane brings in some of the efficiency of fixed ...

If you want longer flight times, something has to change. Or does it? A small start-up company called Horizon Unmanned Systems based out of Singapore claims their quadcopter can fly for up to four ...