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Avimech Dragonfly DF-1 tip jet helicopter.
https://www.youtube.com/watch?v=PyCxztTkq7E
Previously:
https://www.homemadetools.net/forum/...795#post232352
https://www.homemadetools.net/forum/...893#post229732
https://www.homemadetools.net/forum/...157#post214478
https://www.homemadetools.net/forum/...138#post168777
This concept was put forward in the 1970s by a gentleman (whose name escapes me) in Midland, Texas. A hydrogen peroxide-silver reaction propelled the prototype. I watched the initial flights by test pilot Jerry Alexander. The prototype flew well but for less than 30 minutes each flight due to limited fuel.
No wonder he is wearing a Haz-mat suit.