How to make a Paper Helicopter that Flies

Paper Helicopter
http://eng.origami-kids.com/paper-airplane/acrobatic/paper-helicopter.htm

paper-helicopters

Is it a bird or a helicopter? Did you ever wonder what would happen to a helicopter if the engine stopped while it was flying? No, it wouldn’t fall out of the sky. The air flowing through the blades would make them spin, creating lift and allowing the aircraft to become an autogyro, descending slowly rather than crashing down. The Robo Chopper is also an autogyro, and should be launched by throwing it straight up into the air.

The blades will remain folded down until the top of the climb, at which point they’ll open and the aircraft will spin rapidly as it begins to fall. For spectacular flights, drop it from somewhere high, like down a staircase. … Continue reading

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