Drone crashes while carrying 51-kg load, still named 'most promising' by US

Avidrone's Katana helicopter drone won first place in the DARPA Lift Challenge despite crashing while attempting to carry a 51 kg (112.4 pounds) payload. The 13-kg drone successfully achieved a 3.84 to 1 payload-to-weight ratio in the competition held at Ohio. Teams had to take off with a payload, fly, drop the cargo and complete the course without a load.