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In 1912 the company moved to Baltimore, Maryland. Initial propellers were built with Mahogany wood, followed by Oak with sprucewood cores, and by 1915 APMC converted to solid oak construction. With the onset of World War I, AMPC became the largest manufacturer of wooden aircraft propellers in America by 1918.
Roper [21] quotes 90% for a propeller for a human-powered aircraft. Mahogany was the wood preferred for propellers through World War I, but wartime shortages encouraged use of walnut, oak, cherry and ash. [22] Alberto Santos Dumont was another early pioneer, having designed propellers before the Wright Brothers [23] for his airships.
Throughout the mid-20th century, Sensenich wood props were available on nearly all 1-seat and 2-seat U.S.-made aircraft, many of which still operate today. Sensenich expanded into airboat propellers in 1949, establishing a second factory for that market at Plant City, Florida under the name Sensenich Wood Propeller Company.
Hartzell Propeller - United States (1917–present) Hegy Propellers - United States; Heine Propellers - Germany; Helix-Carbon - Germany; Hercules Propellers - UK; F. Hills & Sons - UK; Historic Propellers - Czech Republic (2012 - present) Hoffmann Propeller - Germany (1955–present) Hordern-Richmond - UK (1937-circa 1990)
Props Inc, founded in 1985 by Jeff Bertuleit, is an American manufacturer of wooden propellers for homebuilt and ultralight aircraft. The company headquarters is located in Newport, Oregon . [ 1 ] [ 2 ]
Ray Hegy bought his first plane, a Waco-10, in 1928. In 1957, Hegy started building the Chuparosa and was finished after nine years at a cost of $600. The success of the Chuparosa changed Hegy "from a furniture maker and refinisher to a full-time carver of wooden propellers." At that time, Hegy made his propellers in his backyard workshop. [2]