Man Powered Helicopter

A human-powered helicopter is a helicopter designed to carry at least one person but limited to using only what power is provided by the person(s) on board, usually by pedalling. A high power-to-weight ratio is needed as in all helicopters. Such aircraft must be light and must have efficient rotary wings. Efficiency for human powered purposes means that the rotors must generate great lift but cause little drag, because drag consumes power.

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Human Powered Helicopters Organization 
 CNET Human powered Helicopter gets off the ground
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Developments in Human Powered Helicopter

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