Huge, solar-powered dragon fly: Wing span of a 747, weight of a small car

Huge, solar-powered dragon fly: Wing span of a 747, weight of a small car

John J. Metzler NEW YORK — A dragonfly-like aircraft, large but seemingly fragile, slow but silent, and powered by sunlight, has flown safely across America. The amazing and indeed epic coast to coast journey by the Swiss engineered and piloted Solar Impulse plane concluded in New York having set a number of aeronautical records for […]