Why can't helicopters travel transatlantic?

First of all let me interpret the question as “why are helicopters not designed to fly as long as fixed wing aircraft?” The largest helicopter in operations as of date is Russian Mi-26—almost as large as a Lockheed C-130j. read more

Helicopters are the most unnatural flying machines. Their pilots have to use hands and legs simultaneously to keep it under control in three dimensions. Helicopter’s only characteristics is that it can take off and land vertically, which has hitherto ensured its necessity by military and civil. All it’s complexities stem from rotor blades. read more

CHC, May 31, 2017 - Dallas, Texas - CHC Group and Sikorsky, a Lockheed Martin Company, are marking the 52nd anniversary of their collaboration on the first transatlantic ferry flight by a civilian helicopter, which was also the first unescorted crossing of the Atlantic by helicopter. read more