In this image, a worker applies dope to an airplane wing. The dope, when applied, contracts the linen material of the wing. This contraction helps to counteract friction with the air, thereby improving the aerodynamic performance of the airplane. This photograph was taken during World War I in December 1917.

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Size: 8425px × 5741px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

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