National Air and Space Museum
Restrictions & Rights
Do not reproduce without permission from the Smithsonian Institution, National Air and Space Museum
Transferred from the Smithsonian Institution to the United States National Museum.
Unidentified wood, Steel, Copper Alloy
- Rotor/Propeller: 31.1 x 5cm (12 1/4 x 1 15/16 in.)
- Storage: 61.6 x 56.83 x 8.57cm (2ft 1/4in. x 1ft 10 3/8in. x 3 3/8in.)
Country of Origin
United States of America
Small Propeller used for aerodynamic testing only. Not used for flight trials on aircraft or models. Constructed from narrow wooden strips glued together similar to boat planking and then sanded to a smooth airfoil cross section. Hub reinforced with a 1/16 inch thick metal plate mounted with screws, on one side only. Shaft hole reinforced with metal tube.
PROPULSION-Propellers & Impellers