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Hamilton Standard was an American aircraft propeller parts supplier. It was formed in 1929 when United Aircraft and Transport Corporation consolidated Hamilton Aero Manufacturing and Standard Steel Propeller into the Hamilton Standard Propeller Corporation.
Thomas Foster Hamilton (July 28, 1894 – August 12, 1969) was a pioneering aviator and the founder of the Hamilton Standard Company. [1]Since 1930, Hamilton Standard (now Hamilton Sundstrand) was involved with revolutionizing the propulsion technology of propeller-driven aircraft, prior to World War II.
Hamilton Standard - United States (1929-1999) Hamilton Sundstrand - United States (1999-2012) 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)
In 1929, Caldwell transitioned from the US Army Air Service to the Hamilton Standard Propeller Corporation where he further developed the controllable-pitch propeller. The controllable-pitch or variable-pitch propeller tied together the major aeronautical advances of aerodynamic drag reduction and increased engine power.
de Havilland Propellers was established in 1935, as a division of the de Havilland Aircraft company when that company acquired a licence from the Hamilton Standard company of America for the manufacture of variable-pitch propellers at a cost of about £20,000. [1] [citation needed] Licence negotiations were completed in June 1934.
A Hamilton Standard variable-pitch propeller on a 1943 model Stinson V77 Reliant. A number of early aviation pioneers, including A. V. Roe and Louis Breguet, used propellers which could be adjusted while the aircraft was on the ground. [3]