Sikorsky_YR-4BHNS-1
heli1
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Sikorsky_YR-4BHNS-1
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johnbr

Sikorsky_YR-4BHNS-1

Sikorsky YR-4BHNS-1


taken in 1944, one of Langley Research Center's Sikorsky YR-4B/HNS-1 helicopters is seen in the 30 x 60 Full Scale Tunnel. A technician sets up camera equipment for stop-action rotor-blade photos.
Date 1944.
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