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An early predominant manufacturer in the United States, Spencer Heath's American Propeller and Manufacturing Company was first to use machines for mass production of aircraft propellers, and, under the Paragon trademark, these were widely used in World War I. Construction was a wood laminate because of light weight, strength, fabrication ease, and resistance to fatigue in a vibrating and flexing environment.

Heath demonstrated the first "engine-powered, engine-controlled, variable and reversible pitch propeller" in 1919, but was unsuccessful in convincing the Army of the practicality of the concept. He sold the company to the Bendix Corporation in 1929 and retired from aeronautics two years later.

 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
Country of Origin United States of America Type PROPULSION-Propellers & Impellers Manufacturer American Propeller and Manufacturing Company
 Physical Description Type: Two-Blade, Fixed-Pitch, Wood Diameter: 351 cm (138 in.) Chord: 26.7 cm (10.5 in.) Engine Application: Unknown Dimensions Rotor/Propeller: 350.5 × 27.9 × 26.7cm, 29.5kg (11 ft. 6 in. × 11 in. × 10 1/2 in., 65lb.)
Storage (Aluminum Pallet): 379.7 × 123.8 × 73.7cm, 175.1kg (12 ft. 5 1/2 in. × 4 ft. 3/4 in. × 2 ft. 5 in., 386lb.)
 Materials Laminated wood, Paint, Museum Varnish
 Inventory Number A19690123000 Data Source National Air and Space Museum Restrictions & Rights Usage conditions apply
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