Usage Conditions May Apply Usage Conditions Apply There are restrictions for re-using this media. For more information, visit the Smithsonian's Terms of Use page. IIIF provides researchers rich metadata and image viewing options for comparison of works across cultural heritage collections. More - https://iiif.si.edu View Manifest View in Mirador Viewer Usage Conditions May Apply Usage Conditions Apply There are restrictions for re-using this media. For more information, visit the Smithsonian's Terms of Use page. IIIF provides researchers rich metadata and image viewing options for comparison of works across cultural heritage collections. More - https://iiif.si.edu View Manifest View in Mirador Viewer Usage Conditions May Apply Usage Conditions Apply There are restrictions for re-using this media. For more information, visit the Smithsonian's Terms of Use page. IIIF provides researchers rich metadata and image viewing options for comparison of works across cultural heritage collections. More - https://iiif.si.edu View Manifest View in Mirador Viewer Usage Conditions May Apply Usage Conditions Apply There are restrictions for re-using this media. For more information, visit the Smithsonian's Terms of Use page. IIIF provides researchers rich metadata and image viewing options for comparison of works across cultural heritage collections. More - https://iiif.si.edu View Manifest View in Mirador Viewer

Among the most successful early engines marketed in the United States were those designed and built by aviation pioneer and inventor Glenn H. Curtiss in his factory in Hammondsport, New York. The earliest Curtiss designed engines powered his racing motorcycles. The first Curtiss aircraft engine, a 5.2 kW (7 hp) air cooled, V-twin, powered a small dirigible in 1904.

In 1912, the Curtiss Company introduced a new six-cylinder, in-line water-cooled engine known as the Model S. Designed by Charles B. Kirkham, an associate of Curtiss for a number of years who later became the company’s chief engineer, only six Model S engines are believed to have been produced, and the U.S. Navy purchased five. This was the first Curtiss engine to depart from the single rocker arm operating both intake and exhaust valves since the Silver Dart aircraft engine of 1908.

 Display Status

This object is not on display at the National Air and Space Museum. It is either on loan or in storage.
Object Details
Date Circa 1912 Country of Origin United States of America Type PROPULSION-Reciprocating & Rotary Manufacturer Curtiss Aeroplane and Motor Company
 Physical Description Type: Reciprocating, 6 cylinders, in-line, water-cooled Power rating: 52.2 kW (70 hp) at 1,325 rpm Displacement: 8.24 L (502.64 cu in) Bore and Stroke: 102 mm (4 in.) x 127 mm (5 in.) Weight: 129 kg (285 lb) Dimensions Height 77.5 cm (30.5 in.), Width 30.5 cm (12 in.), Depth 78.7 cm (31 in.)
 Materials Aluminum, Steel, Preservative coating, Wood, Rubber, Textile
 Inventory Number A19520104000 Credit Line Transferred from the Department of the Navy, Bureau of Aeronautics. Washington, D.C. Data Source National Air and Space Museum Restrictions & Rights Usage conditions apply
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