John Langford, CEO of Aurora Flight Sciences, has been demonstrating autonomous aircraft for years – a fact he has shared with Electric Aircraft Symposium audiences several times. This year he gave a brief history of Aurora, starting with the Sunlight Eagle, an adaptation of the Michelob Light Eagle, a human-powered aircraft that preceded the most successful long-distance flight by an HPA – the Daedalus with a 76-mile trip over the Mediterranean. The 2009 craft was originally powered with bicycle-like pedals and still holds four world records for human-powered flight. For its two test flights at Las Cruces International Airport, the pedals were replaced with solar panels, an electric motor, a high-performance battery, and a flight control system. Even with all the add-ons, the 114-foot span airplane weighed a mere 173 pounds. This ability to build light, capable airframes coupled with intelligent remote and autonomous controls has led to multi-day endurance craft well suited to ISR (Intelligence, surveillance and reconnaissance) missions. …