Smallest Helicopter-World record
75-year-old Gennai Yanagisawa, who runs an electronics equipment company in Matsumoto, central
Yanagisawa's helicopter is the smallest model in the world in terms of weight and its rotor length of 3.9 meters.
The first prototype he created in 1995 hovered several centimeters above the ground for just a few seconds, but after poring over books and other materials, including some 50 years old, he managed to solve the technical problems that had been hindering his flight.
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