Transferred from the Smithsonian Institution to the United States National Museum.
Country of Origin: United States of America
3-D: 58.4 x 17.8 x 1cm (23 x 7 x 3/8 in.)
Airfoil section used on Langley whirling arm. Parabolic curve with high point 3/4 inches (1.9 cm) back of leading edge and maximum depth of curvature 15/16 inches (2.4 cm). Steel insert in one end with threaded hole.