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 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

This somewhat unique artifact is an air-cooled, two-stroke cycle rotary aircraft engine designed and built by Paul Daniel of the Daniel Engine Company of Bound Brook, New Jersey during 1918.

Most rotary engines utilize the four-stroke design concept; and generally have an odd number of cylinders to gain a relatively smooth, vibration free operation through an even piston firing order. However, two stroke engines, with twice the number of power strokes as a four-stroke engine, can effectively use an even number of cylinders.

According to the donor, the last and possibly principal use of this engine was as a “technical step for classroom study” in the Department of Mechanical Engineering at New York University.

 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 1918 Country of Origin United States of America Type PROPULSION-Reciprocating & Rotary Manufacturer Daniel Engine Company, Bound Brook, New Jersey
 Designer Paul Daniel
 Physical Description Type: Rotary, 6 cylinders, two-stroke, air-cooled Power rating: Not available Displacement: Not available Bore and Stroke: Not available Weight: About 114 kg (250 lb) Dimensions Length 92.7 cm (36.5 in.), Diameter 87.6 cm (34.5 in.)
 Materials HAZMAT: Cadmium Plating, Magnesium
Steel
Copper Alloy
Plastic
Paint
Ceramic
 Inventory Number A19560076000 Credit Line Gift of Admiral Luis de Flores Data Source National Air and Space Museum Restrictions & Rights Usage conditions apply
For more information, visit the Smithsonians Terms of Use.