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
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