Sikorsky HNS-1 (YR-4B)
One of Langley's Sikorsky YR-4B/HNS-1 helicopters is seen in the 30 x 60 Full Scale Tunnel. The technician is setting up camera equipment for stopped-action rotor-blade photos. Sikorsky built hundreds of R-4 helicopters during World War II. It was the first mass-produced helicopter.
Credit: NASA
Image Number: L-40416
Date: October 19, 1944
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Uploaded on August 10, 2016
Taken on October 19, 1944
Sikorsky HNS-1 (YR-4B)
One of Langley's Sikorsky YR-4B/HNS-1 helicopters is seen in the 30 x 60 Full Scale Tunnel. The technician is setting up camera equipment for stopped-action rotor-blade photos. Sikorsky built hundreds of R-4 helicopters during World War II. It was the first mass-produced helicopter.
Credit: NASA
Image Number: L-40416
Date: October 19, 1944
64,182
views
33
faves
0
comments
Uploaded on August 10, 2016
Taken on October 19, 1944