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Cornu, Paul
 
The first Paul Cornu helicopter was built in 1906 in Lisieux. The machine weighed 13.75 kg and its Buchet engine delivered a full 2 hp and drove two 2,25 m rotors. Horizontal propulsion was achieved by inclined surfaces that were placed in the downwash from the lifting propellers.

 

Cornu-model

Paul Cornu's unmanned model helicopter
 
 Cornu-model-01
 
It reached an altitude of three metres and made flights of up to 20 metres.
 
 
 
 
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