Transferred from the Smithsonian Institution to the United States National Museum.
Country of Origin: United States of America
Rotor/Propeller: 62.2 x 17.1 x 5.1 x 0.6cm (24 1/2 x 6 3/4 x 2 x 1/4 in.)
Propeller of the style used on Langley experimental flying model aircraft, 1896 to 1903. Construction is metal frame covered with frabic. Mounted on a 4-inch (10.2 cm) long shaft, free spinning. This one probably used for aerodynamic testing only.