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2007: CENTENNIAL OF THE HELICOPTER?
Could It Fly?

The following chart was developed by Dr. Gordon Leishman, a leading helicopter aerodynamicist, to analyze the lifting capability of the Cornu helicopter as described by Cornu himself with the actual power available from his engine. 

Cornu Graph

Predictions of power requirements for flight for Cornu's piloted machine, showing that with a 12 to 24 hp Antoinette engine, a free flight, even in ground effect, was a highly improbable event.