The final story of this helicopter: Chen kepts testing this helicopter, there was an accident happened several month later of this vedio shot, he felt the engine stopped work and then machine just fall into a crop field and smashed. He sold the damaged one to someone else for RMB 20K (USD $3000)
the guy is from Guandong, China who spent around RMB 70K (USD 11K)for this helicopter. According his own words; his highest education is a high school diploma; has studied more than 10 years for understanding the whole thing of manufacturing a helicopter then it took him more than 2 years to finish the project.
Chinese farmers probably have a knack for creating DIY flying machines. Wu Zhongyuan, a farmer from China’s Henan province has built himself a helicopter, using wood from an elm tree, a motorcycle engine and steel pipes. The 150cc engine powers the wooden blades, while the steel tubes provide structural rigidity.
Wu has had no formal education in aviation or aeronautics, and says he built the helicopter relying on the Physics he learnt in middle school. He spent three months and nearly $1600 in creating the helicopter, which he claims can go as high as 800 meters. He won’t be able to fly it though, the Chinese government has stopped the flight for safety reasons.
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