where the Aeroflot airline operated passenger helicopters in regular service for many decades. In the mid-1960s they even started work on converting the Mil Mi-6 — the USSR’s largest and ...

NASA's Ingenuity Mars Helicopter ... the 55-foot-long (17-m) float featured an Ingenuity-like rotorcraft at its front and a six-wheeled rover made to look like it had been built using components ...