Helicopter with hydrogen-peroxide-rocket-powered blades
Shown above is a video of the Dragonfly DF1, an experimental aircraft under development by Swisscopter US. Instead of a traditional gasoline engine, the Dragonfly has peroxide-powered rocket engines on the tips of its main blades, with a mechanical take-off to drive the tail-rotor. Large tanks of high-test peroxide supposedly provide 50 minutes of flight at 40 mph.