aviation , Chantilly , helicopter , Hoverfly , NASM , National Air & Space Museum , proto , prototype , R-4 , S-47 , Sikorsky , Smithsonian , Udvar Hazy Center , Udvar-Hazy Center , USA , Virginia , XR-4C

Author

Robin MORET

Created on

Sunday, July 25, 2010

Posted on

Sunday, January 13, 2019

Dimensions

2880*1920

Tags

aviation, Chantilly, helicopter, Hoverfly, NASM, National Air & Space Museum, proto, prototype, R-4, S-47, Sikorsky, Smithsonian, Udvar Hazy Center, Udvar-Hazy Center, USA, Virginia, XR-4C

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• Aviation / This Day In Aviation / January

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