American Propeller and Mfg Co. Propeller, fixed-pitch, two-blade, wood

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    American Propeller and Mfg Co. Propeller, fixed-pitch, two-blade, wood

    Type: Two-Blade, Fixed-Pitch, Wood Diameter: 305 cm (120 in.) Chord: 25.7 cm (10.125 in.) Engine Application: Liberty L-12, V-12, 300 kw (400 hp)

    1 of 12

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    American Propeller and Mfg Co. Propeller, fixed-pitch, two-blade, wood

    Type: Two-Blade, Fixed-Pitch, Wood Diameter: 305 cm (120 in.) Chord: 25.7 cm (10.125 in.) Engine Application: Liberty L-12, V-12, 300 kw (400 hp)

    2 of 12

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    American Propeller and Mfg Co. Propeller, fixed-pitch, two-blade, wood

    Type: Two-Blade, Fixed-Pitch, Wood Diameter: 305 cm (120 in.) Chord: 25.7 cm (10.125 in.) Engine Application: Liberty L-12, V-12, 300 kw (400 hp)

    3 of 12

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    American Propeller and Mfg Co. Propeller, fixed-pitch, two-blade, wood

    Type: Two-Blade, Fixed-Pitch, Wood Diameter: 305 cm (120 in.) Chord: 25.7 cm (10.125 in.) Engine Application: Liberty L-12, V-12, 300 kw (400 hp)

    4 of 12

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    American Propeller and Mfg Co. Propeller, fixed-pitch, two-blade, wood

    Type: Two-Blade, Fixed-Pitch, Wood Diameter: 305 cm (120 in.) Chord: 25.7 cm (10.125 in.) Engine Application: Liberty L-12, V-12, 300 kw (400 hp)

    5 of 12

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    American Propeller and Mfg Co. Propeller, fixed-pitch, two-blade, wood

    Type: Two-Blade, Fixed-Pitch, Wood Diameter: 305 cm (120 in.) Chord: 25.7 cm (10.125 in.) Engine Application: Liberty L-12, V-12, 300 kw (400 hp)

    6 of 12

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    American Propeller and Mfg Co. Propeller, fixed-pitch, two-blade, wood

    Type: Two-Blade, Fixed-Pitch, Wood Diameter: 305 cm (120 in.) Chord: 25.7 cm (10.125 in.) Engine Application: Liberty L-12, V-12, 300 kw (400 hp)

    7 of 12

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    American Propeller and Mfg Co. Propeller, fixed-pitch, two-blade, wood

    Type: Two-Blade, Fixed-Pitch, Wood Diameter: 305 cm (120 in.) Chord: 25.7 cm (10.125 in.) Engine Application: Liberty L-12, V-12, 300 kw (400 hp)

    8 of 12

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    American Propeller and Mfg Co. Propeller, fixed-pitch, two-blade, wood

    Type: Two-Blade, Fixed-Pitch, Wood Diameter: 305 cm (120 in.) Chord: 25.7 cm (10.125 in.) Engine Application: Liberty L-12, V-12, 300 kw (400 hp)

    9 of 12

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    American Propeller and Mfg Co. Propeller, fixed-pitch, two-blade, wood

    Type: Two-Blade, Fixed-Pitch, Wood Diameter: 305 cm (120 in.) Chord: 25.7 cm (10.125 in.) Engine Application: Liberty L-12, V-12, 300 kw (400 hp)

    10 of 12

    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

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    American Propeller and Mfg Co. Propeller, fixed-pitch, two-blade, wood

    Type: Two-Blade, Fixed-Pitch, Wood Diameter: 305 cm (120 in.) Chord: 25.7 cm (10.125 in.) Engine Application: Liberty L-12, V-12, 300 kw (400 hp)

    11 of 12

    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

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    American Propeller and Mfg Co. Propeller, fixed-pitch, two-blade, wood

    Type: Two-Blade, Fixed-Pitch, Wood Diameter: 305 cm (120 in.) Chord: 25.7 cm (10.125 in.) Engine Application: Liberty L-12, V-12, 300 kw (400 hp)

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Display Status:

This object is on display in the Mary Baker Engen Restoration Hangar at the Steven F. Udvar-Hazy Center in Chantilly, VA.

Mary Baker Engen Restoration Hangar

An early predominant manufacturer in the United States, Spencer Heath's American Propeller and Manufacturing Company opened in Baltimore in 1909. Heath was first to use machines for mass production of aircraft propellers and, under the Paragon trademark, these were widely used in World War I. Like most propellers of that era, construction was a wood laminate because of light weight, strength, fabrication ease, and resistance to fatigue in a vibrating and flexing environment.

Heath demonstrated an "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.

This propeller was designed for the World War I American Liberty engine, and could have been used on the British designed, American built De Havilland DH-4 general purpose military airplane.