This object is not on display at the National Air and Space Museum. It is either on loan or in storage.
Collection Item Summary:
"Airplane Propeller, Variable Pitch, before test." Head-on view of a propeller, silhouetted against a white background, before undergoing testing at McCook Field, circa 1918-1919.
Collection Item Long Description:
- Airplanes, Military--Flight testing
- Aeronautics, Military
- Aeronautics, Military--Research