A technician at Langley Research Center sets up equipment for photographing the Sikorsky YR-4B/HNS-1 helicopter as it undergoes wind tunnel experiments. The Sikorsky Company built hundreds of these helicopters during World War II, making it the first mass-produced helicopter.
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Details
Creative#:
TOP22311865
Source:
達志影像
Authorization Type:
RM
Release Information:
須由TPG 完整授權
Model Release:
No
Property Release:
No
Right to Privacy:
No
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