Transferred from the Smithsonian Institution to the United States National Museum.
Country of Origin: United States of America
Rotor/Propeller: 100.3 x 27.3 x 5.1 x 1.3cm (39 1/2 x 10 3/4 x 2 x 1/2 in.)
Propeller of the style used on Langley experimental flying model aircraft, 1896 to 1903. Construction is metal frame covered with frabic. This one probably used for aerodynamic testing only.