Dragonfly DF1 H2O2 helicopter demo
The most amazing new helicopter. Flies so softly and gently it is so stabe and easy to fly. Powered by Hydrogen peroxide gas.
Experiments, inventions, patents, …
Free Energy News TV / overunitydotcom
by F.E.N. · Published 24. March 2010 · Last modified 5. June 2010
The most amazing new helicopter. Flies so softly and gently it is so stabe and easy to fly. Powered by Hydrogen peroxide gas.