Test propeller, No. 23, Langley


Display Status:

This object is not on display at the National Air and Space Museum. It is either on loan or in storage.

Data Source

National Air and Space Museum

Restrictions & Rights

Do not reproduce without permission from the Smithsonian Institution, National Air and Space Museum


Credit Line

Transferred from the Smithsonian Institution to the United States National Museum.


Brass; Unidentified wood; Paper; Steel


  • Rotor/Propeller: 59.7 x 7.6 x 18.1cm (23 1/2 in. x 3 in. x 7 1/8 in.)
  • Storage: 65.09 x 24.77 x 16.19cm (2ft 1 5/8in. x 9 3/4in. x 6 3/8in.)

Country of Origin

United States of America



Physical Description

  • Overall: Wood; Hub plate: Brass Hub and Shaft Hole Reinforcement: Steel; Original Varnish; Paper
  • 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 (0.2 cm) thick metal plate mounted with screws, on one side only. Shaft hole reinforced with metal tube.


PROPULSION-Propellers & Impellers

Inventory Number