Transferred from the Smithsonian Institution to the United States National Museum.
Country of Origin: United States of America
3-D: 50.8 x 15.2 x 0.3cm (20 x 6 x 1/8 in.)
Airfoil section used on Langley whirling arm. Upper surface perfect arc. Lower surface flat. Maximum depth of curvature at center, 1/8 inches (0.3 cm).