Igor Sikorsky, Sikorsky VS-300, 4 rotor (2nd configuration).

Igor Sikorsky, Sikorsky VS-300, 4 rotor

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Igor Sikorsky, Sikorsky VS-300, 4 rotor (2nd configuration).

 

Added to Historical Records - Igor... and categorized in 4 months ago

 

License: Creative Commons Attribution-ShareAlike

 

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