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Powell Helicopter Project of 1935

hesham

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Hi,

Mr. Russell S. Powell designed a coaxial-rotor helicopter or autogiro in 1935,mentioned
in Aerofiles site;

http://www.aerofiles.com/_pl.html

http://blog.modernmechanix.com/inventors-patent-odd-designs-for-safer-planes/
 

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Apteryx

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I'm not seeing anything co-axial about this machine. ???
 
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